Simplicity 7800070 Operator's Manual | Manualzz
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Chipper / Shredder
5/14 Series
Mfg. No.
Model 5/14, 5.5HP Simplicity Chipper / Shredder
Model 5/14, 5.5HP Simplicity Chipper / Shredder (CE)
Model SAC55140BV, 5.5HP Snapper Chipper / Shredder
Model E55140BV, 5.5HP Snapper Chipper / Shredder (CE)
8/14 Series
Mfg. No.
Model 8/14, 8HP Simplicity Chipper / Shredder
Manual No. 1732150
Revision 00
Rev. Date 10/2005
TP 100-4240-00-CS-SN
500 N Spring Street / PO Box 997
Port Washington, WI 53074-0997
Simplicity Mfg. Inc. - Snapper division
535 Macon Street
McDonough, GA 30253
© Copyright 2005 Simplicity Manufacturing, Inc.
All Rights Reserved. Printed in USA.
Table of Contents
Safety Rules & Information.................................2
Troubleshooting & Repair.................................17
Safety Decals ..........................................................6
Safety Icons ............................................................7
Identification Numbers ............................................8
Troubleshooting Chart ..........................................17
Repair ...................................................................18
Initial Assembly .................................................20
Features & Controls ............................................9
Initial Assembly .....................................................20
Control Functions ....................................................9
Specifications ....................................................23
Parts & Accessories..........................................24
Operation ...........................................................10
General Operating Safety .....................................10
Adding Fuel ...........................................................10
Starting the Engine ...............................................10
Stopping the Engine..............................................11
Processing Materials.............................................11
Chipping / Shredding Recommendations .............12
Storage .................................................................12
NOTE: In this manual, “left” and “right” are referred to as
seen from the operating position.
Regular Maintenance ........................................13
Maintenance Schedule & Procedures...................13
Check for Loose Hardware ...................................13
Check Safety Labels .............................................13
Inspect Cone, Hopper, & Guards ..........................13
Clean Debris from Engine & Chipper ....................14
Inspect / Rotate Shredding Hammers ...................14
Inspect Chipping Knives .......................................15
Check / Change Engine Air Cleaner .....................15
Replace Spark Plug ..............................................15
Engine Oil Type and Capacity ..............................16
Check Engine Oil Level.........................................16
Change Engine Oil ................................................16
Safety Rules & Information
Operating Safety
Congratulations on purchasing a superior-quality piece of
lawn and garden equipment. Our products are designed
and manufactured to meet or exceed all industry
standards for safety.
Power equipment is only as safe as the operator. If it is
misused, or not properly maintained, it can be dangerous!
Remember, you are responsible for your safety and that
of those around you.
Use common sense, and think through what you are
doing. If you are not sure that the task you are about to
perform can be safely done with the equipment you have
chosen, ask a professional: contact your local authorized
Read the Manual
The operator’s manual contains important safety information you need to be
aware of BEFORE you operate your unit as well as DURING operation.
Safe operating techniques, an explanation of the product’s features and
controls, and maintenance information is included to help you get the
most out of your equipment investment.
Be sure to completely read the Safety Rules and Information found
on the following pages. Also completely read the Operation section.
Tragic accidents can occur with children. Do not allow
them anywhere near the area of operation. Children are
often attracted to the unit and usage activity. Never
assume that children will remain where you last saw them.
If there is a risk that children may enter the area where you
are operating, have another responsible adult watch them.
Safety Rules and Information
Moving Parts
This equipment has many moving parts that can injure you or
someone else. However, if you follow all the rules in this book,
the unit is safe to operate.
The chipper/shredder has spinning blades that can amputate
hands and feet. Do not allow anyone near the equipment while
it is running! Do not place hands or feet in the hopper or
chipper cone, or discharge chute.
Thrown Objects
This unit discharges debris at high speeds. Always wear protective goggles
and do not operate without the debris bag in place. Also, do not allow anyone
in the area while the unit is running! If someone does enter the area, shut the
unit off immediately until they leave. Organize the work area prior to starting
Fuel and Maintenance
Gasoline is extremely flammable. Its vapors are also extremely flammable
and can travel to distant ignition sources. Gasoline must only be used as a
fuel, not as a solvent or cleaner. It should never be stored any place where
its vapors can build up or travel to an ignition source like a pilot light. Fuel
belongs in an approved, plastic, sealed gas can, or in the fuel tank with the
cap securely closed. Spilled fuel needs to be cleaned up immediately.
Proper maintenance is critical to the safety and performance of your unit.
Be sure to perform the maintenance procedures listed in this manual,
especially periodically testing the safety system.
Safety Rules & Information
Read these safety rules and follow them closely. Failure to obey these rules could result in loss of control
of unit, severe personal injury or death to you, or bystanders, or damage to property or equipment.
This unit is capable of amputating hands and feet and throwing objects. The triangle
in text
signifies important cautions or warnings which must be followed.
15. Always maintain secure footing and solid balance
while starting or operating the chipper/shredder.
Never lean directly over the machine.
16. Always stand to the side of the chipper cone when
feeding tree limbs and branches into the unit, as tree
limbs, branches, and harder woods may kick back
while being chipped.
17. Always keep hands out of the chipper cone and
shredder hopper when feeding materials. Never wrap
fingers tightly around branches as you are feeding
them into the unit, as a sudden inward surge could
pull your hands and arms into the unit.
18. Never allow material to build up in the discharge area
or shredding chamber, as this may cause new
material being fed into the machine to kickback with
sufficient force to injure you or other bystanders.
19. Never allow material to build up around the engine
during chipper/shredder operation. This could result
in a fire, or overheating of the engine.
20. Never attempt to reposition or move the
chipper/shredder unit while it is running. Doing so
could cause the machine to tip over, and reaching to
steady the unit could result in accidental insertion of
your hands into the chipper cone or shredder hopper
21. Never continue to operate the machine if it starts
making unusual noise or vibration. Shut the engine off
immediately, allow the rotor to stop, disconnect the
spark plug wire and secure the wire away from the
spark plug. Inspect the unit for any signs of damage
or foreign material in the chipping or shredding areas.
Remove any solid material that may be preventing
the unit from operating properly.
22. Never attempt to clear clogs from the chipper cone,
shredder hopper or discharge chute while the unit is
running. Always shut the engine off, allow the rotor to
come to a complete stop, and remove the spark plug
wire from the spark plug before removing excess
23. Never attempt to perform any maintenance, repairs,
or attachment of accessories while the unit is running.
Always shut the unit off, allow the rotor to come to a
complete stop, and remove the spark plug wire from
the spark plug before beginning these activities.
24. Always make sure that the shredding chamber,
shredder hopper, and chipper cone are empty before
starting the unit after it has been idle. Attempting to
start the unit with material in these areas could cause
the engine starting cord to stop suddenly, injuring
your hand and fingers, or toppling the unit over.
Vibration is generally a warning sign of trouble.
25. Before cleaning, repairing, or inspecting, shut off the
engine and make certain that all moving parts have
come to a complete stop. Disconnect the spark plug
wire and secure the wire away from the spark plug to
prevent accidental starting.
26. Do not operate the engine in a confined space where
dangerous carbon monoxide fumes can collect.
27. Never operate the machine without proper guards,
plates, or other safety protective devices in place.
1. Do not operate the equipment without wearing
adequate outer garments and safety goggles. Avoid
loose-fitting clothes and use protective footwear that
will improve footing on slippery surfaces.
1. Read the operating and service instructions carefully.
Be thoroughly familiar with the controls and the
proper use of the equipment. Know how to stop the
unit and disengage the control quickly.
2. Keep the area of operation clear of all persons,
particularly small children, and pets.
1. Read, understand, and follow all instructions in the
manual and on the unit before starting.
2. Do not put hands or feet near rotating parts or under
the machine. Keep clear of the discharge opening at
all times.
3. Only allow responsible adults, who are familiar with
the instructions, to operate the unit (local regulations
can restrict operator age).
4. Be sure the area is clear of other people before
operating. Stop the unit if anyone enters the area.
5. Never direct discharge material toward anyone.
Avoid discharging material against a wall or
obstruction. Material may ricochet back toward the
6. Operate the machine only in daylight or good artificial
7. Do not operate the unit while under the influence of
alcohol or drugs.
8. Always wear eye and hearing protection when
operating this unit.
9. Keep in mind the operator is responsible for accidents
occurring to other people or property.
10. It is a violation of California Public Resource Code
Section 4442 to use or operate the engine on or near
any forest-covered, brush-covered, or grass-covered
land unless the exhaust system is equipped with a
spark arrester meeting any applicable local or state
laws. Other states or federal areas may have similar
11. Always operate the chipper/shredder outdoors, on a
firm, level, earthen or grassy surface where the unit
will be stable and stay in position. Never attempt to
operate the unit on a slope, or on a wet or slippery
surface where you could slip and fall toward the
chipper cone or hopper openings.
12. Never operate the chipper/shredder on asphalt,
concrete, or other hard surfaces as material being
ejected out of the discharge chute could ricochet,
causing injury to you or bystanders.
13. Always obey the size limitations for tree limbs and
branches stated in the Waste Materials Guide portion
of this manual.
14. Never leave the machine running unattended. Always
turn off the engine, wait for the rotor to come to a
complete stop, and disconnect the spark plug before
leaving the area. Always move the unit to a safe
storage area when not in use.
Safety Rules and Information
28. Use only attachments and accessories approved of
by the manufacturer or the machine.
8. Keep nozzle in contact with the rim of the fuel tank or
container opening at all times until fueling is
complete. Do not use a nozzle lock-open device.
9. If fuel is spilled on clothing, change clothing
10. Never over-fill the fuel tank. Replace gas cap and
tighten securely.
11. Use extra care in handling gasoline and other fuels.
They are flammable and vapors are explosive.
12. If fuel is spilled, do not attempt to start the engine but
move the machine away from the area of spillage and
avoid creating any source of ignition until fuel vapors
have dissipated.
13. Replace all fuel tank caps and fuel container caps
14. Never run the unit in an enclosed area where carbon
monoxide fumes may collect.
15. Keep nuts and bolts tight and keep equipment in
good condition.
16. Keep unit free of grass, leaves, or other debris buildup. Clean up oil or fuel spillage. and remove any fuelsoaked debris. Allow machine to cool before storage.
17. If you strike an object, stop and inspect the machine.
Repair, if necessary, before restarting.
18. Never make adjustments or repairs with the engine
19. Maintain or replace safety and instructions labels, as
20. Do not use gasoline containing METHANOL, gasohol
containing more than 10% ETHANOL, gasoline
additives, or white gas because engine/fuel system
damage could result.
21. If the fuel tank must be drained, it should be drained
22. Replace faulty silencers/mufflers.
23. Use only factory authorized replacement parts when
making repairs.
24. Always comply with factory specifications on all
settings and adjustments.
25. Only authorized service locations should be utilized
for major service and repair requirements.
26. Never attempt to make major repairs on this unit
unless you have been properly trained. Improper
service procedures can result in hazardous
operation, equipment damage and voiding of
manufacturer’s warranty.
27. Do not change engine governor settings or overspeed the engine. Operating the engine at excessive
speed can increase the hazard of personal injury.
28. Keep machine, attachments, and accessories in safe
working condition.
29. Check the engine mounting bolts and other hardware
at frequent intervals for proper tightness to be sure
the equipment is in safe working condition.
30. Always refer to the operating instructions for
important details if the machine is to be stored for an
extended period.
31. The collector bag will deteriorate with time and use.
Inspect it regularly and replace if it becomes worn.
1. Always observe safe refueling and fuel handling
practices when refueling the unit after transportation
or storage.
2. Never store the unit (with fuel) in an enclosed poorly
ventilated structure. Fuel vapors can travel to an
ignition source (such as a furnace, water heater, etc.)
and cause an explosion. Fuel vapor is also toxic to
humans and animals.
3. Always use the hopper handle and built-in wheels to
move the chipper/shredder. Never lift the unit using
the fuel tank for support. If the unit must be lifted ,
always use at least two people, and always grip the
unit securely using the front leg and hopper handle.
4. Always follow the engine manual instructions for
storage preparations before storing the unit for both
short and long term periods.
5. Always follow the engine manual instructions for
proper start-up procedures when returning the unit to
6. Never store the unit or fuel container inside where
there is an open flame or pilot light, such as in a
water heater. Allow unit to cool before storing.
Tragic accidents can occur if the operator is not alert to the
presence of children. Children are often attracted to the
unit and the operating activity. Never assume that children
will remain where you last saw them.
1. Keep children out of the work area and under the
watchful care of another responsible adult.
2. Be alert and turn unit off if children enter the area.
3. Never allow children to operate the unit.
1. Engine exhaust from this product contains chemicals
known, in certain quantities, to cause cancer, birth
defects, or other reproductive harm.
2. Look for the relevant Emissions Durability Period and
Air Index information on the engine emissions label.
1. This spark ignition system complies with Canadian
Safe Handling of Gasoline
1. Extinguish all cigarettes, cigars, pipes, and other
sources of ignition.
2. Use only approved gasoline containers.
3. Never remove the gas cap or add fuel with the engine
running. Allow the engine to cool before refueling.
4. Never fuel the machine indoors.
5. Never store the machine or fuel container where
there is an open flame, spark, or pilot light such as
near a water heater or other appliance.
6. Never fill containers inside a vehicle or on a truck bed
with a plastic bed liner. Always place containers on
the ground away from your vehicle before filling.
7. Remove gas-powered equipment from the truck or
trailer and refuel it on the ground. If this is not
possible, then refuel such equipment on a trailer with
a portable container, rather than from a gasoline
dispenser nozzle.
Safety Decals
Safety Decals
All DANGER, WARNING, CAUTION and instructional
messages on your unit should be carefully read and
obeyed. Personal bodily injury can result when these
instructions are not followed. The information is for your
safety and it is important! The safety decals below are on
your unit.
This unit has been designed and manufactured to
provide you with the safety and reliability you would
expect from an industry leader in outdoor power
equipment manufacturing.
Although reading this manual and the safety instructions
it contains will provide you with the necessary basic
knowledge to operate this equipment safely and
effectively, we have placed several safety labels on the
unit to remind you of this important information while you
are operating your unit.
Decal - Operating Instructions, North American
Models, Part No. 1721918
To avoid serious
personal injury from
rotating cutting
blades, keep hands
out of inlet while
machine is running.
These labels are easily applied and will act as a constant
visual reminder to you, and others who may use the
equipment, to follow the safety instructions necessary for
safe, effective operation.
Decal - Operating Instructions, CE Models,
Part No. 1721919
Avoid Serious Injury or Death
• Read and follow the operating instructions.
• Know the location and function of all controls.
• Wear proper safety goggles and hearing
• Never wear loose clothing.
• Keep hands and clothing clear of material
being pulled into the unit.
• Keep hands and feet away from the discharge
chute area.
• Keep safety devices (guards & shields)
in place and working.
• Do not operate when children or others
are present.
• Be sure all moving parts have stopped
before placing hands near the cutting
• When leaving the machine, shut off the
Decal - Danger, Rotating Cutting Blades,
Warning, Debris, North American Models
Part No. 1732181
Decal - Danger, Rotating Cutting
Blades, North American Models
Part No. 1732039
Amputation Hazard
To avoid serious personal injury from rotating
cutting blades, keep hands out of inlet while
machine is running.
Thrown Objects
To avoid serious personal injury from
To avoid serious personal injury from
rotating cutting blades, keep hands out discharged debris, never operate
of discharge while machine is running. without the discharge bag installed.
Amputation Hazard
If any of these decals are lost or damaged, replace them
at once. See your local dealer for replacements.
Decal - Danger, Rotating Cutting
Blades, CE Models
Part No. 1731920
Decal - Danger, Thrown Objects,
Do Not Operate Without Collection
Bag, CE Models
Part No. 1731921
Safety Icons
Safety Icons
Warning: Read Operator’s
Danger: Thrown Objects.
This machine is capable of throwing
objects and debris. Keep
bystanders away.
Read and understand the
Operator’s Manual before using this
Danger: Amputation Hazard.
Danger: Thrown Objects.
To avoid serious personal injury
from rotating cutting blades, keep
hands out of inlet while machine is
This machine is capable of throwing
objects and debris. Keep bystanders
and children away when engine is
Danger: Wear Appropriate Safety
Danger: Do Not Place Hands in
the Machine.
This machine is capable of throwing
objects and debris. Always wear
safety goggles while operating.
To avoid serious personal injury
from rotating cutting blades, keep
hands out of inlet while machine is
running. Do not place hands in
areas where this symbol is present.
This machine’s operating sound
power level is 109 dB(A) or more.
Wear hearing protection while
Warning: Disconnect the Spark
Plug Wire Before Servicing.
Disconnect the spark plug wire, and
secure it away from the spark plug
before servicing the unit.
Identification Numbers
North American /
CE Models
CE Models
ID Tag
Model Description Name/Number
When contacting your authorized dealer for
replacement parts, service, or information you MUST
have these numbers.
Record your model name/number, manufacturer’s
identification numbers, and engine serial numbers in the
space provided for easy access. These numbers can be
found in the locations shown.
Unit PART Number
Unit SERIAL Number
Dealer Name
Date Purchased
NOTE: For location of engine identification numbers,
refer to the engine owner’s manual.
CE Models: Place the extra copy of the identification tag
in the manual
Engine Make
Engine Model
Engine Type/Spec
Engine Code/Serial Number
CE Identification Tag Markings
Manufacturer’s Identification Number
Power Rating in Kilowatts
Maximum Engine Speed in Rotations per Minute
Sound Pressure at Operator’s Position in Decibels *
Manufacturer’s Address
Year of Manufacture
CE Compliance Logo
Mass of Unit in Kilograms
Sound Power in Decibels **
This unit complies with European Harmonized Lawn Mower
Standard EN 836, European Machinery Directive 98/37/EC,
and European EMC Directive 89/336/EC
CE Specifications
* Tested according to EN836:1997/A2:2001
** Tested according to 2000/14/EC
Model Number: 1694898 / 7800070
Engine Maximum RPMs: 3700
Power Rating: 4 kW
Mass: 52kg
Noise Guaranteed Sound Power (LwA): 109 dB(A)
Noise Sound Pressure Level (LpA): 96 dB(A)
Features and
Figure 1. Controls
Control Functions
The information below briefly describes the function of individual controls. Operating requires the combined use of
several controls applied in specific sequences. To learn what combination and sequence of controls to use for various
tasks see the OPERATION section.
Engine Stop / Throttle Control
The engine stop / throttle control lever controls turn the
engine off and controls the engine speed. Move the
throttle right to increase engine speed and left to
decrease engine speed. Moving the lever all the way to
the left stops the engine. Always operate at FULL
throttle (lever fully right).
Close the choke for cold starting. Open the choke once
the engine starts. A warm engine may not require
choking. Move the lever right to close the choke.
Fuel Tank
To remove the cap, turn counterclockwise.
Recoil Starter
Chipper Cone / Shredder Hopper
The recoil starter is used to turn the engine over for
Chipper Cone: The chipper cone is located on the front
of the unit next to the engine. Insert branches and tree
limbs up to approximately 3” (7,6 cm) in diameter into the
chipper cone. NEVER insert hands past the mouth of
the cone.
Fuel Shut-Off Valve
The fuel shut-off valve is located below the air cleaner
housing. Always close the valve when the unit is not in
Shredder Hopper: The shredder hopper is on top f the
unit. Leaves and other light waste can be loaded into the
shredder hopper. NEVER insert hands into the hopper .
Debris Bag: Use the debris bag to collect the material
discharged from the unit. Do not operate the unit without
the debris bag on place.
General Operating Safety
Be sure to read all information in the Safety and
Operation sections before attempting to operate this unit.
Become familiar with all of the controls and how to stop
the unit.
The exhaust from this product contains carbon
monoxide gas. Carbon monoxide is a colorless,
orderless, and tasteless gas that can cause
dizziness, nausea, unconsciousness, or even
brain damage and death if inhaled for prolonged
Upon start-up and shut-down, you may hear the metalto-metal sound of the triangular hammers and Jhammers positioning themselves on the rotor. This is
normal. If this sound continues after the machine has
reached full speed, contact your dealer for an inspection
of the unit. Overloading the equipment will shorten its
life, and can cause mechanical failures.
Operate the unit outdoors in a well ventilated
location only. Keep children, pets, and
bystanders away.
Failure to follow these instructions may result in
serious injury or death.
Chipper Operation
Adding Fuel
The chipper is designed to handle tree limbs and
branches up to approximately 3” (7,6 cm) in diameter.
The chipping knives also permit the processing of course
organic matter like corn stalks. Tree branches must be
inserted large-end first into the chipper cone. Since
occasional kick-backs may occur, always stand off to the
side of the unit. Allow the self-feeding action of the unit
to draw the sticks in.
Do not use gasoline containing METHANOL,
gasohol containing more than
10% ETHANOL, gasoline additives, or white
gas because engine/fuel system damage
could result.
Shredder Operation
The shredder is designed to shred light brush, leaves,
and other soft but bulky organic waste. As material is
loaded into the shredder hopper it is pulled into path of
the triangular and J-hammers by air flow.
Gasoline is highly flammable and must be
handled with care. Never fill the tank when the
engine is still hot from recent operation. Do not
allow open flame, smoking or matches in the
area. Avoid over-filling and wipe up any spills.
Vacuum Attachment (Optional)
To add fuel:
1. Remove the fuel cap (see Figure 1).
2. Fill the tank. Do not overfill. Leave room in the tank
for fuel expansion. Refer to your engine manual for
specific fuel recommendations.
3. Install and hand tighten the fuel cap.
To avoid serious personal injury from rotating
cutting blades, keep hands out of inlet while
machine is running.
In addition to the chipper cone and hopper, loose debris
may be processed by the Vacuum hose adapter kit.
Leaves may be raked directly into the leaf tray where
vacuum action will draw them into the shredder. For
hard-to-reach areas, the nozzle and hose assembly may
be used. The strength of the Vacuum may be changed
using the rotating sleave on the nozzle.
Starting the Engine
1. Set the throttle to FULL.
2. Close the choke.
NOTE: A warm engine may not require choking.
3. Place one foot on the front support leg to hold the
unit firmly in place.
4. Pull the starting rope out to begin turning the engine
over. Pull slowly at first and increase speed with
each successive pull.
5. After the engine starts, open the choke and move the
engine throttle control to SLOW. Warm up the engine
by running it for at least a minute.
8. Set throttle to FULL and begin chipping/shredding.
Operating Location
Select an area with firm, level ground, covered by dirt or
grass. Do not operate on wet or slick surfaces, or near
bystanders. Locate and organize the materials to be
processed so that you don’t have to walk in front of the
inlet or discharge openings, and so you have adequate
room to work safely.
Stopping the Engine
NOTE: In the event of an emergency the engine can be
stopped by setting the throttle control to STOP.
1. Slide the throttle control fully left to the STOP
NOTE: Upon start-up and shut-down, you may hear the
metal-to-metal sound of the triangular hammers and Jhammers positioning themselves on the rotor. This is
2. After the engine has stopped moving, remove the
spark plug wire and remove any debris from the unit
and engine.
Processing Materials
Most materials to be processed can be handled more
efficiently by following these tips.
Chipping Tips:
• Prune branches down close to the main branch to
make feeding them into the chipper cone easier.
Figure 2. Chipping.
• Large, hard, dried tree branches that resist chipping
can be processed by rotating them as you alternately
insert and retract them.
• If the material to be chipped is extremely hard, kicks
back forcefully when being fed into the chipper cone,
or cannot be easily controlled, remove the material
immediately and set it aside.
• If additional force is required to insert materials into
the chipper, the blades probably need to be
sharpened. Consult the Troubleshooting and Repair
section of this manual, or see your authorized dealer.
• Maintain control of the materials you are feeding to
prevent them from whipping around.
• Do not insert short pieces of material into the chipper
cone by hand. Use a larger piece of material to force
them into the chipper cone.
Shedding Tips
• Don’t overload the shredder by dumping large
volumes of material into the hopper opening.
• Alternate loads of wet and dry material to prevent the
discharge from becoming plugged.
• Never use any object to force material into the
shredding chamber. It could get caught in the
shredding hammers and damage the unit.
Figure 3. Shredding.
Chipping & Shredding Recommendations
Type of Waste
Size Limitations
Dry or moist organic
material including leaves,
plants, flowers, fruits, or
Branches and twigs up to
1/2” diameter and 18” long.
Alternately chip or shred moist green
waste with dry waste to avoid plugging
of the discharge chute.
Long, thicker tree limbs or
small bunches of smaller
sticks grouped together for
ease of handling.
Tree limbs and branches, or
bundles of small sticks
grouped for easier handling.
Maximum diameter of
approximately 3” (7,6 cm).
Process at a feeding rate that allows the
rotor to keep up and maintain a high rate
of speed.
Bulky tree limbs should be pruned close
to the main stem. Always use a shorter
piece of wood to push end pieces into
the chipper cone. Never place hands in
the chipper cone.
Never chip very hard or dry materials
such as kiln dried dimensional lumber
(2x4’s etc.) or other building materials.
Never use the chipper to process
pressure-treated wood products.
Light, loose, dry waste such Small materials that will not The vacuum is engineered for small,
as leaves, grass clippings, obstruct the vacuum hose. loose waste and for cleaning around
or sawdust.
decorative landscaping and flower beds.
Twigs, wet leaves, and other bulky
materials will clog the hose or obstruct
the shredding chamber.
Before you store your unit for the off-season, read the
Maintenance and Storage instructions in the Safety
Rules section, then perform the following steps:
• Perform engine maintenance and storage measures
listed in the engine owner’s manual. This includes
draining the fuel system, or adding stabilizer to the
fuel (do not store a fueled unit in an enclosed
structure - see warning).
Before starting the unit after it has been stored:
• Check all fluid levels. Check all maintenance items.
• Perform all recommended checks and procedures
found in the engine owner’s manual.
• Allow the engine to warm up for several minutes
before use.
Maintenance Schedule & Procedures
The following schedule should be followed for normal care of your unit.
Before Every 5 Every 25 Every
Hours Hours
Check for loose hardware
Spring &
Check all safety labels
Inspect cone, hopper, and guards.
Clean debris from engine and chipper. **
Before Every 5 Every 25 Every
Hours Hours
Check Engine Oil Level *
Spring &
Inspect/Rotate Shredding Hammers
Inspect/Rotate Chipping Knives
Before Every 8 Every 25 Every 50 Every
Hours Hours
Spring &
Change Engine Oil * **
Check / Change Engine Air Filter * **
Replace Spark Plug *
* Refer to engine owner’s manual. Change original engine oil after initial break-in period of 5-8 hours.
** More often in hot (over 85° F: 30° C) weather or dusty operating conditions.
Check for Loose Hardware
Inspect Cone, Hopper, & Guards
Service Interval: Every 5 hours; every spring and fall.
Inspect the unit, checking for loose hardware or
components. Pay special attention to the hardware
attaching the chipper cone, hopper, axle, and front leg.
Service Interval: Every spring and fall.
Check that the chipper cone, shredder hopper, and
discharge guards are in place, undamaged, and secure.
Replace any damaged or missing parts.
Check Safety Labels
Service Interval: Every spring and fall.
Check that the safety labels are in place and
undamaged. Sample illustrations and part numbers of
the decals can be found on page 6. Replace any
damaged or missing decals.
Regular Maintenance
Figure 4. Clean Debris from Engine Cooling Fins
Figure 5. Inspect Shredder Hammers
A. Access Panel
Clean Debris from Engine &
Service Interval: Before each use and every 100
The engine requires air flow to cool itself and for
combustion. Before each use, clean any debris from the
unit especially from around the air shroud intake, air
filter, and muffler. Every 100 hours, remove the engine
air shroud and clean out any debris from the engine
cooling fins at the locations shown in Figure 4. We
recommend having this service performed by an
authorized dealer.
Figure 6. Triangular Hammer Wear Area
Inspect / Rotate Shredding
Service Interval: Every 25 Hours, or As Necessary
The shredding hammers of this unit can be rotated to
provide a new cutting surface as required. The triangular
hammers can be rotated twice, then flipped over for a
total of 6 sharp cutting surfaces. The J-hammers can be
flipped over once. To inspect the shredding hammers:
Amputation hazard. To avoid serious injury from
accidental starting, always disconnect the spark
plug wire and secure it away from the spark plug
when servicing the unit.
Figure 7. J-Hammer Wear Area
1. Disconnect the spark plug wire and secure it away
from the spark plug.
2. Remove the small circular access panel (A, Figure 5)
from the back of the shredder housing.
3. Inspect the cutting edges of the triangular hammers
(Figure 6) and J-hammers (Figure 7).
To rotate or replace the shredding hammers, see the
Troubleshooting and Repair section.
Regular Maintenance
Inspect Chipping Knives
Service Interval: Every 25 Hours, or As Necessary
The chipping knives of this unit can be rotated or
sharpened to provide a new cutting surface as required.
When inspecting the knives be careful to avoid touching
the sharpened edges. To inspect the chipping knives:
1. Disconnect the spark plug wire and secure it away
from the spark plug.
To avoid serious injury from accidental starting,
always disconnect the spark plug wire and secure it
away from the spark plug when servicing the unit.
Figure 8. Inspect Chipper Knives
A. Chipper Cone
2. See Figure 8. Remove the nuts securing the chipper
cone to the front of the chipper. Remove the chipper
cone (A) to access the knives.
3. Using the recoil starter, slowly pull the starter rope to
rotate the rotor into position so the blades can be
To sharpen or replace the chipper knives, see the
Troubleshooting and Repair section.
Check / Change Engine Air
Service Interval: Every 25 Hours
The engine air cleaner assembly should be opened,
inspected, and the filer element replaced every 25 hours,
or as required if debris has built up in the assembly.
To replace the air filter and pre-cleaner assembly:
1. Loosen the screw (A, Figure 9) and remove the filter
cover (B).
2. Inspect the pre-cleaner (C) and air filter element (D).
If either are soiled, then replace.
Figure 9. Change Air Filter
A. Screw
B. Filter Cover
C. Pre-Cleaner
D. Air Filter Element
E. Air Filter Base
F. Slots and Tabs
3. Insert the new pre-cleaner (C) and air filter element
(D) inside the filter cover (B). Make sure the arrows
on the filter element are pointed up, and the lip of the
pre-cleaner covers the bottom filter pleats.
4. Insert the cover tabs (F) into the filter base slots.
5. Tilt the cover up into place and tighten the screw (A).
Replace Spark Plug
Please contact your authorized dealer to perform this
Regular Maintenance
Engine Oil Type & Capacity
Use oil classified API Service Class SF,
SG, SH, SJ or better with SAE Viscosity:
Select a quality engine oil using the chart in Figure 10.
5.5 HP models require 5/8 quart (0.6L) of oil. 8HP
models require 7/8 quart (0.8L) of oil.
30 Conventional**
Check Engine Oil Level
Service Interval: Before Each Use
Check the engine oil level at the oil fill and level check
plug (A, Figure 11).
5W-30, 10W-30 Synthetic
1. Stop the engine and wait for all moving parts to stop.
2. Remove the oil fill and level check plug (A, Figure 11)
by twisting it counter-clockwise. The oil should be
filled up to the mouth of the filler opening as shown in
the Figure 11 inset.
20 32 40
-7 0 4
*CAUTION: Air cooled engines run hotter than automotive engines.
The use of non-synthetic multi-viscosity oils (5W-30, 10W-30, etc.)
in temperatures above 40º F (4ºC) will result in higher than normal
oil consumption. When using a multi-viscosity oil, check oil level
more frequently.
Change Engine Oil
Service Interval: Every 50 Hours
1. Stop the engine and wait for all moving parts to stop.
Allow the unit to cool before changing the oil.
**CAUTION: SAE 30 oil, if used below 40º F (4ºC), will result in hard
starting and possible engine bore damage due to inadequate
2. Remove the oil fill and level check plug (A, Figure 11)
by twisting it counter-clockwise.
Figure 10. Oil Recommendations
3. Place an oil drain pan below the engine and remove
the oil drain plug (B, Figure 11). Allow the oil to drain
4. Reinstall the oil drain plug (B). Tighten the plug to
125 inch pounds (14 Nm)
5. Add oil to the oil fill hole (A) until the oil level is even
with the bottom edge of the oil fill hole (Figure 11
Figure 11. Oil Fill and Oil Drain
A. Oil Fill & Level Check Plug
B. Oil Drain Plug
& Repair
Troubleshooting Chart
While normal care and regular maintenance will extend
the life of your equipment, prolonged or constant use
may eventually require that service be performed to
allow it to continue operating properly.
To avoid serious injury, perform maintenance on
the unit only when the engine is stopped.
Always disconnect the spark plug wire and fasten
it away from the plug before beginning the
maintenance, to prevent accidental starting of the
The troubleshooting guide below lists the most common
problems, their causes, and remedies.
See the information on the following pages for
instructions on how to perform most of these minor
adjustments and service repairs yourself. If you prefer,
all of these procedures can be performed for you by your
local authorized dealer.
Engine will not start.
Add fuel.
Reconnect spark plug wire.
Refer to Starting in the Operation section.
Remove the spark plug, clean or replace.
See your authorized dealer.
Engine exhaust is black.
Engine runs but no material is
Excessive branch vibration when
chipping materials.
Unusual noise or vibration when.
processing material.
Out of fuel.
Spark plug wire disconnected.
Engine controls not set correctly.
Spark plug fouled.
No compression. Recoil starter
pulls with no resistance.
No spark. Ignition problem.
Old or stale fuel.
Dirty air filter.
Choke closed.
Discharge chute clogged.
Engine not running at full speed.
Chipper knives dull.
Tree limbs are extremely hard or
dried out.
Rotor overloaded with material.
Hammers are broken, bent, or
3. Hammers frozen in place.
Vacuum not working.
Hopper lid not in place.
Material too wet.
Hose not attached properly.
Hose obstructed or damaged.
Engine not running at full RPM.
See your authorized dealer.
See your authorized dealer.
Replace air filter. See engine manual.
Open choke.
Clean out debris.
Set throttle control to FAST.
Sharpen or replace chipper knives.
Material is not suitable for chipping.
Allow unit to clear itself before adding more
material to the hopper.
Check assembly. Tighten or replace as
Check for obstructions and debris. Repair as
Install lid.
Allow material to dry.
Attach hose per instructions (see hose kit).
Clear blockage or replace.
Set throttle control to FAST.
Troubleshooting & Repair
Figure 12. Removing the Shredder Hopper
Figure 13. Removing the Rotor Housing
Shredding Hammer Rotation and
The cutting edges of the shredding hammers may
eventually wear out requiring rotation of the hammer or
replacement if all cutting edges have been dulled.
Triangular hammers can be rotated twice after the first
edge dulls, then flipped over once and rotated again for a
total of 6 edges. J-hammers can be flipped over once for
a total of two cutting edges.
To rotate the shredding hammers:
1. Turn the engine off and wait for all moving parts to
2. Disconnect the spark plug wire and secure it away
from the spark plug.
To avoid serious injury from accidental starting,
always disconnect the spark plug wire and secure it
away from the spark plug when servicing the unit.
3. Detach the shredder hopper from the rotator housing
(Figure 12).
4. Remove the rotator cover by removing the hardware
that secures it to the main housing (Figure 13).
5. Note the assembly sequence of the hardware used to
secure the hammers (Figure 14). Using a 5/16” allen
wrench remove the socket head capscrew (A) and
related hardware.
7. Inspect the hammers (G, H), spacer tubes (D, F), and
hardware. If the spacer tube (D, F) shows signs of
wear, replace it. Inspect and flip, or replace the
hammers (G, H).
Figure 14. Removing the Rotor Housing
A. Socket Hd. Capscrew
E. Spacer, Short
B. Lockwasher, 3/8
F. Washer, 3/8 (8HP Only)
C. Washer, 7/8
G. J-Hammer
D. Spacer, Long
H. Triangular Hammer
8. Reassemble the hammers, spacers, washers, and
capscrews. Torque the socket head capscrews (A)
to 30-35 ft. lbs. (41-47 N.m.)Refer to Figure 14 for
assembly. The J-hammer (G) on the opposite side of
the rotor faces outward for balanced rotation.
Repeat for all the hammers.
Troubleshooting & Repair
Chipping Knives Sharpening and
The chipping knives should be sharpened or replaced
when tree limbs require extra force to feed into the
chipper cone.
The chipping knives may be resharpened at a 30 degree
angle until the distance between the edge of the blade
bevel and the mounting hole is less than 1/16” (1,6mm)
(see Figure 17).
To inspect, sharpen, or replace the chipping knives:
Figure 15. Installing the Chipper Cone
1. Turn the engine off and wait for all moving parts to
2. Disconnect the spark plug wire and secure it away
from the spark plug.
Amputation hazard. To avoid serious injury from
accidental starting, always disconnect the spark
plug wire and secure it away from the spark plug
when servicing the unit.
3. Detach the shredder hopper from the rotator housing
(see Figure 12).
4. Remove the rotator cover by removing the hardware
that secures it to the main housing (see Figure 13).
Figure 16. Access Hole
A. Access Hole
5. Remove the chipper cone base (Figure 15).
6. Rotate the rotor assembly so that the socket head
capscrews that secure one of the chipper knives can
be accessed through the rotor cover and access hole
(Figure 16).
Top View
Side View
Cutting hazard. To avoid serious injury, avoid
contacting the sharp cutting edges of the chipping
7. Using a 1/4” hex wrench, loosen and remove the two
socket head capscrews and chipper knife.
Figure 17. Chipper Knife Minimum Cutting Edge
8. Inspect, rotate, sharpen, or replace the chipper knife.
9. Reinstall the chipper knife and tighten the socket
head capscrews to 18-20 ft. lbs (24-27 N.m.).
10. Rotate the rotor 180 degrees and repeat with the
other chipper knife. Reinstall the rotator cover and
shredder hopper when completed.
Figure 19. Attaching the Hopper
Figure 18. Installing the Chipper Cone
A. 1/4-20 x 3/4 Screw, Washer, & Nut
B. 5/16-18 Flange Nut
C. Cone Base
D. Chipper Cone
Initial Assembly
Install Chipper Cone - All Models
1. Secure the chipper cone (D, Figure 18) to the chipper
cone base (C) using 1/4-20 x 3/4 screws, washers,
and nuts (A).
Figure 20. Installing Hardware Inside the Hopper
2. Position the chipper cone base (C) over the three
5/16-18 threaded studs protruding from the engine
plate, and attach using three 5/16-18 flange nuts (B).
3. Tighten the flange nuts securely.
Install the Hopper - All Models
1. Attach the hopper to the rotor housing. Make sure to
engage the metal lip of the hopper liner inside the
2. Secure the hopper to the rotor housing using two
5/16 x 1/2 hex head bolts and two 5/16 flat washers
(Figure 19). Do not tighten hardware at this time.
3. See Figure 20. From the inside of the hopper install
one 5/16-18 x 3/4 hex head bolt, 5/16 lockwasher,
and 5/16 flat washer into each of the upper and lower
holes of the metal hopper liner. Finger tighten only at
this time.
4. Check that the hopper is seated correctly and tighten
all hardware.
Initial Assembly
Install the Handle - All Models
1. Lift the hopper handle up until the outer holes in the
handle align with the holes in the shredder hopper
and secure with 1/4-20 x 3/4 screws, washers, and
nuts (A, Figure 21). Insert the screws from the
outside of the shredder hopper.
Figure 21. Installing the Hopper Handle
A. 1/4-20 x 3/4 Screw & Nut
Initial Assembly
Slide bag over discharge chute.
Make sure bag
noose fits over top
of discharge chute
and notch in chute
Lift discharge
chute and slide
bag over chute.
Make sure bag
noose fits over
top of discharge
chute and notch
in chute bottom.
Pull drawstring tight.
Pull drawstring tight.
Figure 22. Discharge Bag - North American Models
Figure 23. Discharge Bag - CE Models
Install Discharge Bag
This product comes with a discharge bag for collection of
debris as it exits the discharge chute. Install the bag as
shown in Figure 22 or 23.
Add Engine Oil
Refer to “Engine Oil Type and Capacity” in the Regular
Maintenance section for oil type and fill procedures.
Add Fuel
Refer to “Adding Fuel” in the Operation section for fuel
specifications and filling procedures.
NOTE: Specifications are correct at time of printing and are subject to change without notice.
* Actual sustained equipment horsepower will likely be lower due to operating limitations and environmental factors.
5.5 HP* Briggs & Stratton
All Models
Oil Capacity
Chipping Capacity
Shredding Capacity
Chipping Knives
Shredding Hammers
Briggs & Stratton
5.5 @ 3600 rpm
12.48Cu. in (206 cc)
20 Oz. (.6 L)
Waste Reduction
8 HP* Briggs & Stratton
Oil Capacity
Briggs & Stratton
8 @ 3600 rpm
18.64 Cu. in (305 cc)
28 Oz. (.8 L)
Approximately 3” (7,6 cm)
1/2” x 18” Long
2 J-hammers, 2 triangular
Approximately 20:1
5.5 HP 120 lbs (54 kg); 8HP 130
lbs (59kg)
Parts &
Replacement Parts
Technical Manuals
Replacement parts are available from your authorized
dealer. Always use genuine Simplicity/Snapper Service
Additional copies of this manual are available, as well as
fully illustrated parts lists. These manuals show all of the
product’s components in exploded views (3D illustrations
which show the relationship of parts and how they go
together) as well as part numbers and quantities used.
Important assembly notes and and torque values are
also included.
Maintenance Items
Many convenient and helpful service and maintenance
items are available from you authorized dealer. Some of
these items include:
Engine Oil
Touch-Up Paint
Grease Gun Kit
For applicable manuals currently available for your
model, contact our Customer Publications Department at
262-284-8519 (Simplicity) / 877-249-6647 (Snapper).
Technical manuals can be downloaded from
8 oz. Grease Tube
Gas Stabilizer
Optional Accessories
Vacuum Hose Kit
Gas Cans
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