Scag Power Equipment SW Belt Drive User Manual

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OPERATOR'S MANUAL
POWER EQUIPMENT
PLEASE BE CAREFUL!
» Keep all shields in place, especially grass discharge chute.
* Before performing any maintenance or service, stop machine and
remove spark plug wire.
* |f mechanism becomes clogged, stop engine before cleaning.
* Keep hands, feet and clothing away from power-driven parts.
* Do not operate the mower without a seat.
* Keep others off the tractor (on!y one person at a time).
REMEMBER - YOUR MOWER IS ONLY AS SAFE AS THE OPERATOR!
FAILURE TO FOLLOW SAFE OPERATING PRACTICES
MAY RESULT IN SERIOUS INJURY.
@ >
This manual covers operating instructions for model:
SW - with serial number 40001-49999
The serial number is the last 5 digits listed on the
serial number tag mounted to the engine deck.
N 7
TABLE OF CONTENTS
SUBJECT
Safety Instructions
Before Operating — — — — — 2
While Operating — — — — a 2-3
While Maintaining and Storing — — — LHC __ 3
Operation
Initial Run-In ___— La 4
Mower Operation _ __ _ __ ee 4
Adjustments
Cutter Deck Drive Belt — m mL} 5
Drive Controls mn mn LE} 5-6
Transmission Drive Belt __ _____ __ 6
Cutter Deck — .——— a 6
Blade Height — — — __ __ __ __ __ __ __ _ 7
Cutter Blades. __ __ __ _ __ __ _ __ _ __ _ Es 7
Lubrication & Maintenance _ __ __ _ __ _ 8
Replacement Parts ___ _____ LL 8
Troubleshooting - Cutting Conditions — — — — — — — — __ _ 9-11
Warranty
SAFETY INSTRUCTIONS
Your mower is only as safe as the operator! As with
any type of power equipment, carelessness or error
on the part of the operator may result in serious
bodily injury. In addition, improper maintenance of
the machine can also result in injury. To reduce the
potential for injury, please read and follow these
instructions on safe operation and be certain that
anyone using this mower fully understands and com-
plies with the following instructions.
BEFORE OPERATING
1. Read and understand the contents of this Opera-
tor s Manual before operating your machine. Be-
come familiar with all controls and know how to
stop quickly. À replacement Operator's Manual
as well as an Illustrated Parts Manual are avail-
able from your Scag servicing dealer for a
minimal charge of $2.00 for each manual. To
order, contact your dealer with complete model
number & serial number of your Scag product.
Do not allow children to operate the machine. Do
not allow adults to operate the machine without
proper instruction.
Before attempting to start engine, shift transmis-
sion into neutral, move blade engagement switch
to OFF position and move neutral latches to neu-
tral.
Remove all debris or other objects that might be
picked up and thrown by the cutter blades. Keep all
bystanders away from the mowing area.
Keep all shields, safety devices, and decals in
place. If a shield, safety device or decal is defective
or damaged, repair or replace it before operating.
Also, tighten all loose nuts, bolts and screws to
assure machine is in safe operating condition.
6. Do not operate machine while wearing sandals,
tennis shoes, sneakers or shorts. Also, do not wear
loose fitting clothing which could get caught in
moving parts. Always wear long pants and sub-
stantial shoes. Wearing safety glasses and safety
shoes is advisable and required by some local ordi-
nances and insurance regulations.
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A
7. Fill fuel tank with clean, fresh gasoline, with a
minimum octane rating of 87, before starting the
engine. Avoid spilling gasoline. Since gasoline is
flammable, handle it carefully.
Use an approved gasoline container.
Do not fill tank while engine is hot or running.
Do not smoke while handling gasoline.
Fill fuel tank outdoors and up to approximately
1" (25 mm) below the bottom of the filler neck.
E. Wipe up any spilled gasoline.
Caw»
WHILE OPERATING
1. Start engine when neutral latches are in neutral
lock position, cutter blades are disengaged, and
transmission is in neutral.
2. Do not run the engine in a confined area without -
adequate ventilation. Exhaust fumes are hazardous
and could possibly be deadly.
3. Using the machine demands attention. To prevent
loss of control:
A. Mow only in daylight or when there is good
artificial light.
B. Watch for holes or other hidden hazards.
C. Do not drive close to a drop-off, ditch or creek
bank or other hazard.
D. Reduce speed when making sharp turns and
when turning on hillsides.
E. Always be sure of your footing. Keep a firm
hold on the handles and walk---never run.
F. Do not operate where conditions are slippery.
4. The discharge chute must always be installed and
in the down position on the side discharge cutter
deck except when optional grass catcher or mulch-
ing plate are completely installed. If the discharge
area should plug, shut engine off and wait for all
movement to stop before removing obstruction.
5. Disengage the blades and wait for them to stop
before crossing gravel drives, walks or roads.
6. Shut the engine off and wait until the blades come
to a complete stop before removing the grass
catcher container.
7. Neverraise the cutting unit while the blades are ro-
tating.
——— JGAG
SAFETY INSTRUCTIONS CONT'D
ET
8. If the cutting blades should strike a solid object
or the equipment should start to vibrate abnor-
mally, stop the engine, disconnect the spark plug
wire, and check immediately for the cause. Vi-
bration is generally a warning of trouble. Check
the cutting unit and traction unit for damaged or
defective parts. Repair any damage before start-
ing the engine or operating the cutter unit. Be
sure blades are in good condition and blade bolts
are tight.
9. Always park the mower and/or start the engine
on a level surface. If this is not possible, block
the wheels to prevent the mower from moving
when you are not in the operator’s position.
10. Cut grass slopes carefully. Do not start, stop or
turn suddenly. When operating on a slope, start
at the bottom of the slope and travel across the
grade whenever possible. Never travel up and
down the grade. Do not mow excessively steep
slopes.
ÁN WARNING: Reduce speed and be very care-
ful when operating on slopes to prevent tipping.
If you need to turn on a hill, always turn uphill.
11. Do not touch engine or muffler while engine is
running or soon after it is stopped. These areas
could be hot enough to cause a burn.
12. Before leaving the operator’s position or leaving
mower unattended, shift transmission into neu-
tral, place neutral latches in neutral lock position
and move blade engagement switch to OFF.
Shut engine OFF and remove key.
13. Do not pass or stand on the grass discharge side
of any mower with the engine running. Stop op-
eration when another person approaches.
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MAINTENANCE AND STORAGE
1. Disconnect high tension wire from spark plug to
prevent accidental starting of the engine when
servicing, adjusting or storing the machine.
2. If mower must be tipped to perform maintenance or
adjustment, remove battery, drain gasoline from
fuel tank and oil from crankcase.
3.
12.
13.
To reduce potential fire hazard, keep the engine
free of excessive grease, grass, leaves and accumu-
lations of dirt.
Be sure machine is in safe operating condition by
keeping nuts, bolts, and screws tight. Check the
blade mounting bolts and nuts frequently to be sure
they are tightened.
If the engine must be running to perform a mainte-
nance adjustment, keep hands, feet, clothing and
other parts of the body away from the cutter deck
blades and other moving parts.
Do not overspeed the engine by changing governor
settings. To be sure of safety and accuracy, have an
authorized dealer check maximum engine speed
with a tachometer.
Engine must be shut off before checking oil or
adding oil to the crankcase.
Allow engine to cool before storing mower in any
enclosure such as a garage or storage shed. Make
sure the fuel tank is empty if machine is to be stored
in excess of 30 days. Do not store mower near any
open flame or where gasoline fumes may be ig-
nited by a spark.
Always store gasoline in a safety-approved, red
container.
. Keep the mower and fuel container in locked
storage to prevent children from playing and
tampering with them.
. Perform only those maintenance instructions de-
scribed in this manual. If major repairs are ever
needed or assistance is desired, contact an Author-
ized Scag Dealer. To ensure optimum perform-
ance and safety, always purchase genuine SCAG
replacement parts and accessories. NEVER USE
“WILL-FIT” replacement parts and accessories
made by other manufacturers. Using unapproved
replacement parts and accessories may void the
warranty.
Be careful when servicing the battery as it contains
acid, which is corrosive and could cause burns to
skin and clothing.
Batteries release explosive gases when being
charged or discharged. KEEP away from any
source of sparks and/or flame.
OPERATIONS
INITIAL RUN-IN
First day of use or approximately 10 hours.
*
Check belts for proper tension at 2, 4 and
8 hours. Adjust as needed.
Check steering control rods for neutral 3
adjustment. (See Adjustments, page 7)
Check tires for proper pressure.
Caster Wheels 23 psi.
Drive Wheels 15 psi.
Check for loose hardware. Tighten as
needed.
Check safety switches for proper adjust- 4.
ment:
* Engine will crank, but not start
if machine is not in neutral.
* On electric start, engine will
not crank if PTO switch is on.
* Engine should crank and start if
machine is in neutral and PTO
engagement switch is OFF.
Grease machine fittings:
Spindle Bearings - 2 or 3 5
Transmission Couplers - 2
Drive Wheel Bearings - 2
Caster Wheel Bearings - 2
Caster Pivot Yoke - 2 6
Idler Pivot Bracket - 2
Cutter Deck Idler - 1 or 2
MOWER OPERATION
1. Read and understand the safety instructions
before attempting to operate this machine.
2. Before starting engine:
* Check oil levels in engine.
* Fill tank with clean, fresh, lead-free gaso-
line. Fuel valve must be opened.
NOTE: Use gasoline with an octane
rating no less than 87.
* Transmission must be in NEUTRAL.
* Blade clutch switch must be in OFF position.
* Operator's presence levers must be released.
* Neutral latches must be in neutral lock posi-
tion.
* Key switch must be on.
Start engine:
* Choke as required. If engine is cold, pull the
choke knob out. When engine starts, slowly
push choke in. If engine stalls, repeat the
above operation. When engine is warm,
choking may not be necessary.
Engage cutter blades by pushing blade cluch switch
into the ON position. Turn switch to OFF position
to disengage cutter blades.
NOTE: When PTO is engaged or (possibly) dis-
engaged, squealing sound from the
underside is normal. It is caused by the
electric clutch plates meshing as the
mower comes up to speed. For best
equipment life, engage clutch with the
engine idled down, not under load.
. Shift transmission into gear for desired mowing
speed.
NOTE: Top speed is suggested only for transport!
. While squeezing steering brake levers with both
hands, release both neutral latches.
When steering brake levers are released, machine
will travel straight. To make a right turn, squeeze
RH lever. To turn left, squeeze LH lever.
TO STOP wheel drive, squeeze both levers, lock
neutral latches, and shift transmission into neutral.
ÁWARNING: To avoid serious bodily injury and
damage to transmission, machine must be at full stop
before shifting from forward to reverse or from reverse
to forward.
ADJUSTMENTS
CUTTER DECK BELT ADJUSTMENTS
1. Remove belt cover.
2. To adjust cutter deck drive belt, adjust nut until
end of spring aligns with the edge of the L-
shaped bracket. (See figure 1)
NOTE: Due to initial belt stretch and to prevent
the belt from slipping, check this adjust-
ment after the first 2 hours, 4 hours
and 8 hours of operation.
| BELT
|
NUT "J" BOLT
\
WASHER
END OF L-SHAPED BRACKET
Figure 1
BELT TENSION | ADJUSTMENT
ADJUSTMENT IDLER
IDLER
DISCHARGE
AREA
CHECK BLADE DRIVE
BELT TENSION HERE Figure 3
DRIVE CONTROLS
1. Traction Plus: With the hand controls re-
leased, adjust swivels by holding the bail 2" (+/-
1/2") from the dash panel. Adjust so that the
swivels just touch the bottom of the slots in the
traction levers. (See figure 4)
NOTE: The key to proper operation of Traction
Plus is that both swivels are touching the
bottom of the traction lever slots at the
same time when the bail is pulled back.
3. To adjust the blade drive belt, adjust belt ten-
sion, so belt moves 1/2" with 10 Ibs. pressure.
Adjust tension by tightening or loosening J-
bolt. (See figure 2 & 3)
Figure 2 WASHER
BAIL
TRACTION
PLUS LEVER
SWIVELS SHOULD TOUCH
BOTTOM OF SLOT
Figure 4
2. Steering Control Rods: There should be
approximately 3/4" clearance from the bottom of
the rod to the bottom of the neutral latch slot
When in the drive position. (See figure 5, next
page)
ADJUSTMENTS CONT'D
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Brake Rods: Adjust so that the brakes do
not apply until the steering levers are pulled tight
to the handles. When the steering levers are
locked in the neutral position, the unit may be
pushed around. (See figure 5)
NEUTRAL POSITION
DRIVE POSITON
e
STEERING |
BRAKE LEVER
Figure 5
TRANSMISSION DRIVE BELT
Adjust the transmission drive belt so that there is
about a 3/16" deflection with 10 Ibs. of pressure.
Adjust by loosening idler pulley mounting bolt and
sliding the idler left or right to change belt tension.
CUTTER DECK ADJUSTMENTS
Due to the many cutting conditions that exist, it is
difficult to suggest a cutter deck setting that will
work for every lawn. There are two adjustments that
can be made on these decks, pitch and height.
PITCH is the angle of the blades (comparing front to
rear).
HEIGHT is the nominal distance the blade is off of
the ground. This measurement is made with the
blades pointed side to side and distance is measured
between cutting tip and ground. (Also see Blade
Height Adjustment, next page)
Low Cut (1 3/4"-3")
Mid Range (2 1/2"-3 3/4)
High Cut (3 1/4"-4 1/2”)
Cutter Deck Height Adjustment
Figure 6
Changes to the cutting height can be achieved by repo-
sitioning the cutter deck in relationship to the engine
deck. (This adjustment can also effect the pitch of the
deck) There are three available positions (see figure 6).
Suggested mounting is in the middle holes. For cutting
lower, mount the deck in the top holes. To cut hi gher,
mount the deck in the bottom holes.
Caster spacers also can be repositioned to change
cutting heights and to change the pitch of the deck.
(See figure 7)
Pin
Spacers
|
Repositioning Spacers
Figure 7
ADJUSTMENTS CONT'D
CT AA В ООООЛЛООООО АННО]
BLADE HEIGHT ADJUSTMENT
Adjusting the blade height can be done by moving
any number of the four smaller 1/4" spacers on the
blade mounting bolts to the top of the spindle shaft
or below the spindle shaft.
NOTE: All blades should be positioned equally.
The tapered bearing spindle has a large 1/4" spacer
that 1s installed directly below the spindle housing
and 1s secured to the spindle with two roll pins. The
blade can be adjusted all the way up to the spindle
assembly if all the smaller 1/4" spacers are removed
and installed above the pulley. The larger 1/4"
spacer can then be removed along with the roll pins.
NOTE: Do not install the larger 1/4” spacer above
the pulley, store it in a convenient location
away from the machine.
When any 1/4" spacers are installed above the
blades the larger 1/4" spacer must be installed first
directly below the spindle housing. If a smaller 1/4"
spacer is installed directly below the spindle housing
and contacts the retaining ring this will cause a
spindle failure and not be warrantable. For best cut
and discharge, a minimum of three spacers should
be installed between the blade and spindle. (See
figure 8)
CUTTER BLADES
Do not sharpen beyond 1/3 of the width of the
blade. (See figure 9) |
NOTE: Dress the blade with a file. Using a wheel
| grinder may burn the blade. Check the
balance of the blade. If blades are out of
balance, vibration and premature wear of
spindle assembly can occur. See your au-
thorized Scag dealer for blade balancing
or special tools if you choose to balance
your own blades.
Hex Nut-Torque Cutter Blade
to 75 Lb-Ft Spacer 1/4” Small
GE==— = ZZ
Е 1
«== =
sone — | Cute
Deck
‚Е
opindle +" ao a
Assembly
Cutter Blade —>1 Cutter Blade
Spacer 1/4-Large -——— Spacers
pra 1/4*-Small
Washer | \
Cutter Blade
Hex Head Bolt
Figure 8
N
Do Not Cut In Angle Blade Back
X Must NOT Exceed
1/3 Blade Width
EEE IA
LUBRICATION & MAINTENANCE
BREAK-IN
rhe + Grease spindle until grease comes out the relief valve
8 HOURS (DAILY) Compatible Greases: Lidok EP #2 (found at industrial shops)
Se i Ronex MP (Exxon service stations)
Shell Alvania (Shell service stations)
Mobilux #2 (Mobil service stations)
Super Lub M EP #2 (Conoco service stations)
PROCEDURE COMMENTS |
( Check all hardware for proper tightness
q Change engine oil and filter at 5 hours
«№ ECAICCE CHEIBE QI Te
X | Check “all har ware for proper tightness
X | Adjust air gap on electric clutch
Contact your Scag dealer for information about
making this adjustment
REPLACEMENT PARTS
For your convenience, we are providing a list of common replacement parts for your SCAG Product.
Part Description 32 36 48 52 61 72
Cutter Blade 16-1/2" X X
Cutter Blade 16-1/2" High Lift x x
Cutter Blade 18" X X
Cutter Blade 18” High Lift X X
Cutter Blade 21° x . X
Belt, RH Blade Drive
Belt, Blade Drive
Beit, RH Blade Drive
TROUBLESHOOTING
Stringers - Occasional
Blades of Uncut
Low engine RPM
Run engine at full 3600 RPM
Grass
Ground speed too fast
Slow speed to adjust for conditions
Wet grass
Cut grass after it has dried out
Dull blades, incorrect sharpening
Sharpen blades
Deck plugged, grass accumulation
Clean underside of deck
Belts slipping
Adjust belt tensions
Streaking - Strips of
Dull, worn blades
Sharpen blades
Uncut Grass in Cutting
Path
Incorrect blade sharpening
Sharpen blades
Low engine RPM
Run engine at full 3600 RPM
Belt slipping
Adjust belt tension
Deck plugged, grass accumulation
Clean underside of deck
Ground speed too fast
Slow speed to adjust for conditions
Wet grass
Cut grass after it has dried out
Bent blades
Replace blades
Streaking - Strips of
Uncut Grass Between
Cutting Paths
Not enough overlapping
between rows
Increase the overlap of each
pass
Uneven Cut on Flat
Lift worn off of blade
Replace blade
Ground - Wavy
High-Low
Appearance,
Blade upside down
Mount with cutting edge toward
ground
Scalloped Cut or Rough
Contour
Deck plugged, grass accumulation
Clean underside of deck
Too much blade angle (deck pitch)
Adjust pitch and level
Deck mounted improperly
See your authorized SCAG dealer
Bent spindle area
See your authorized SCAG dealer
Dull Blade
Sharpen Blade
Uneven Cut on
Uneven Ground -
Wavy Appearance,
High-Low Scalloped
Cut or Rough Contour
Uneven ground
May need to reduce ground speed,
raise cutting height, and/or change
direction of cut
Sloping Ridge Across
Width of Cutting Path
Tire pressures not equal
Check and adjust tire pressure
Wheels uneven
Check and adjust tire pressure
Deck mounted incorrectly
See your authorized SCAG dealer
10
TROUBLESHOOTING
Scalping - Blades
Hitting Dirt or
Low tire pressures
Check and adjust pressures
Cutting Very Close to
the Ground
Ground speed too fast
Slow speed to adjust for conditions
Cutting too low
May need to reduce ground speed,
raise cutting height, change direction
of cut and/or change pitch and level
Rough terrain
May need to reduce ground speed,
raise cutting height, and/or change
direction of cut
Ground speed too fast
Slow speed to adjust for conditions
Wet grass
Cut grass after it has dried out
Step Cut - Step Cut
Ridge in Center of
Cutting Path
Blades not mounted evenly
Bent blade
Adjust pitch and level
Replace blade
Internal spindle failure
See your authorized SCAG dealer
Mounting of spindie incorrect
See your authorized SCAG dealer
Slope Cut - Sloping
Ridges Across Width
Bent spindle mounting area
See your authorized SCAG dealer
of Cutting Path
Internal spindle failure
See your authorized SCAG dealer
Bent deck housing
See your authorized SCAG dealer
11
eee By EE Ly LT O NE
LIMITED WARRANTY-COMMERCIAL EQUIPMENT
Any part of the Scag commercial mower manufactured by Scag and found, in the reasonable judgment of Scag, to be
defective in materials or workmanship, will be repaired or replaced by an Authorized Scag Service Dealer without charge
for parts and labor. This warranty is limited to the original purchaser and is not transferable. Proof of purchase will be
required by the dealer to substantiate any warranty claims. All warranty work must be performed by an Authorized Scag
Service Dealer.
This warranty is limited to the following specified periods from the date of the original retail purchase for defects in materials
or workmanship:
*
Wear items including drive belts, blades, hoses and tires are warranted for 90 days.
Batteries are covered for 90 days.
Frame, deck, and structural components including oil reservoir, fittings, and oil cooler are
warranted for 1 year.
Engines and electric starters are covered by the manufacturer's warranty period.
Drive system components are warranted for 1 year by the component manufacturer, in
conjunction with Scag Power Equipment. (Excluding fittings, hoses, cooling system, oil
reservoir, drive belts).
Electric clutch components are warranted for 1 year.
*
*
Any Scag product used for rental purposes is covered by a 90 day warranty.
The Scag mower, including any defective part must be returned to an Authorized Scag Service Dealer within the warranty
period. The expense of delivering the mower to the dealer for warranty work and the expense of returning it to the owner
after repair will be paid for by the owner. Scag's responsibility is limited to making the required repairs and no claim of
breach of warranty shall be cause for cancellation or rescission of the contract of sale of any Scag mower.
This warranty does not cover any mower that has been subject to misuse, neglect, negligence, or accident, or that has
been operated in any way contrary to the operating instructions as specified in the Operators Manual. The warranty does
not apply to any damage to the mower that is the result of improper maintenance, or to any mower or parts that have not
been assembled or installed as specified inthe Operator's Manual. The warranty does not cover any mower that hasbeen
altered or modified changing performance or durability. In addition, the warranty does not extend to repairs made
necessary by normal wear, or by the use of parts or accessories which, in the reasonable judgment of Scag, are either
incompatible with the Scag mower or adversely affect its operation, performance or durability.
Scag Power Equipment reserves the right to change or improve the design of any mower without assuming any obliga-
tion to modify any mower previously manufactured.
All other implied warranties are limited in duration to the one (1) year warranty period or ninety (80) days for mowers used
for rental purpose. Accordingly, any such implied warranties including merchantability, fitness for a particular purpose,
or otherwise, are disclaimed in their entirety after the expiration of the appropriate one year or ninety day warranty period.
Scag's obligation under this warranty is strictly and exclusively limited to the repair or replacement of defective parts and
Scag does not assume or authorize anyone to assume for them any other obligation. Some states do not allow limitations
on how long an implied warranty lasts, so the above limitation may not apply to you.
Scag assumes no responsibility for incidental, consequential or other damages including, but not limited to, expense for
gasoline, expense of delivering the mower to an Authorized Scag Service Dealer and expense of returning it to the owner,
mechanic's travel time, telephone or telegram charges, rental of a like product during the time warranty repairs are being
performed, travel, loss or damage to personal property, loss of revenue, loss of use of the mower, loss of time or incon-
venience. Some states do not allow the exclusion or limitation of incidental or consequential damages,so the above
limitation or exclusion may not apply to you.
This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.
© 1993 PART NO. 03002
SCAG POWER EQUIPMENT PRINTED 9/93
DIVISION OF METALCRAFT OF MAYVILLE PRINTED IN USA