RE–POWERING GUIDELINES
If replacing a Briggs & Stratton engine with another Briggs & Stratton engine, use the original engine’s model and type
numbers to assure the correct replacement. If replacing a competitor’s engine with a Briggs & Stratton engine, let the
power level and features of the original engine, plus the expected work cycle, guide you in selecting the correct
replacement. Also consider these factors:
1.
Engine Selection
Match the engine’s performance and cost to your specific application to get the optimum performance at an
affordable price. That means better value for you.
•
•
•
•
Vanguard™ OHV (overhead valve) engines are maximum performance, cast iron sleeved engines.
- select for continuous heavy duty applications.
INTEK™ PRO, Industrial Plus™ and I/C® (Industrial/Commercial) engines are cast iron sleeved.
- select for medium duty commercial, industrial and rental use.
INTEK™and PowerBuilt™ engines are aluminum cylinder bore OHV engines.
- select for general consumer use.
Standard engines are aluminum cylinder bore, side valve engines.
- select for general consumer use.
2.
Safety Points
3.
Horizontal Crankshaft Engines
For many safe hours of operation, it is important to maintain the original engine’s power, starter type
and position, fuel tank location, fuel line routing, muffler location, exhaust direction and muffler accessories (i.e.,
deflector, spark arrester, etc.). Reinstall all guards, shields and safety devices. Replace missing, worn or
damaged parts.
•
•
•
•
•
4.
Compare the overall engine size to avoid possible mounting interference
Match the crankshaft
- Diameter “A”
- Height “B” (distance from base to crankshaft center line)
- Length “C” (distance from oil seal/cover’s mounting face
to end of crankshaft)
Match the crankshaft type, i.e., keyway, tapered or threaded
Match the crankcase cover’s tapped holes for mounting
accessories (if applicable)
Match the base mounting dimensions and
bolt hole spacing
Vertical Crankshaft Engines
•
•
•
•
Compare the overall engine size to avoid possible mounting interference
Match the starter type and starter grip position “A”
Match the crankshaft
- Diameter “B”
- Keyway type “C”
- Length “D” (distance from mounting face of sump - not oil seal to end of crankshaft)
Match the mounting base dimensions and bolt hole spacing
WARNING
Briggs & Stratton does not approve or authorize the use of these engines on 3-wheel All Terrain Vehicles (ATVs), motor bikes, fun/recreational
go-karts, aircraft products or vehicles intended for use in competitive events. Use of these engines in such applications could result in property
damage, serious injury (including paralysis), or even death.
INTEK™ 21.0 Gross HP
540 CC
Features:
• Dura-Bore™ cast iron cylinder sleeve
for extended life
• Float carburetor for consistent easy
starting
• Maintenance-free Magnetron® electronic
ignition for quick, dependable starts
• Dual-Clean™ Air Cleaner Pleated Paper
filter with a foam pre-cleaner ensures
maximum protection for extended
engine life
• Overhead valve design (OHV) for cooler
operation and longer valve life
• Patented linear balancing system
provides smoother performance
• Premium oil filter
• Platinum spark plugs for extended life
• Buyer protection package provides
two-year limited consumer engine
warranty
Bore 3.70 in. (94.0 mm)
Stroke 3.06 in. (77.8 mm)
Oil Capacity 48 fl. oz. (1.4 L)
6.82˝
(173.23)
9.39˝
(238.51)
11.81˝
(299.97)
12.87˝
(326.90)
END
VIEW
7.16˝
(181.86)
12.70˝
(322.58)
6.22˝
(157.99 )
11.51˝
(292.35)
3.54˝
(89.81)
2.87˝
(72.85)
2.87˝
(72.85)
.350˝ ±.003
(8.89 ±.007)
Top Governor Speed
Notes
X
Fuel Tank (Quarts)
R
Ground Wire Terminal
M
Choke-A-Matic®
Pulse Fuel Pump
X
Oil Pump with Filter
Controls
Crankshaft (P.T.O.)
Extension
Governor
SIDE
VIEW
Ext. Oil Fill & Dipstick
Crankshaft
Shipping Weight
Model
Type
4.10˝
3.54˝
(89.81) (104.04)
Dimension
4X
BOTTOM
VIEW
Starter Position
Bolt-On/Changeable
3.54˝
(89.81)
X
X
n
3300
t
331807
3026
797579
Tapped 7/16-20, Keyway, 1” dia.
3-5/32(b)
n Fuel tank omitted. t Engine equipped with 12 Volt Gear Drive Starter and 9 Amp DC Alternator.
All power levels stated gross power per SAE J1940
54
MODEL
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SPECIFICATIONS OF SERVICE ENGINES
LEGEND OF ABBREVIATIONS
STARTER POSITION:
Number shown is “o’clock” position of rewind starter. Spark plug is considered to be the 12 o’clock position.
“CS” – carburetor side, “OC” – opposite carburetor, OIL FILLER & DRAIN:
“D” – dual (both sides), “T” (Three sided).
GOVERNOR:“AV” – air vane, “M” – mechanical, “E” – electronic.
CONTROLS:“MF” – manual friction, “R” – remote, “AG” – adjustable for a constant speed operation, “FC” – fixed speed control.
GROUND WIRE TERMINAL:
May be used with stop switch in remote location.
ACCESSORY MTG. BOSS
or FLANGE MOUNTING:
Tapped holes in crankcase cover used to fasten clutch brackets, belt guards, etc.
Distance from end of crankshaft to one of the points listed below:
DIMENSION:
(a) Oil seal on plain bearing horizontal crankshaft
engines.
(b) Mounting face of sump on vertical crankshaft
engines.
(c) Flange mounting face on horizontal crankshaft
engines.
SHIPPING WEIGHT:
Gross Domestic Shipping Weight.
Briggs & Stratton Corporation believes the specifications in this brochure to be correct at time of printing. However,
specifications, standard equipment, options, and colors are subject to change without notice.
ALL POWER RATINGS SHOWN IN THIS CATALOG ARE SUBJECT TO THE FOLLOWING:
The gross power rating for individual gas engine models is labeled in accordance with SAE (Society of Automotive Engineers)
code J1940 (Small Engine Power & Torque Rating Procedure), and rating performance has been obtained and corrected in
accordance with SAE J1995 (Revision 2002-05). Torque values are derived at 3060 RPM; horsepower values are derived at
3600 RPM. The gross power curves can be viewed at www.BRIGGSandSTRATTON.COM. Net power values are taken with
exhaust and air cleaner installed whereas gross power values are collected without these attachments. Actual gross engine
power will be higher than net engine power and is affected by, among other things, ambient operating conditions and engineto-engine variability. Given the wide array of products on which engines are placed, the gas engine may not develop the rated
gross power when used in a given piece of power equipment. This difference is due to a variety of factors including, but not
limited to, the variety of engine components (air cleaner, exhaust, charging, cooling, carburetor, fuel pump, etc.), application
limitations, ambient operating conditions (temperature, humidity, altitude), and engine-to-engine variability. Due to manufacturing and capacity limitations, Briggs & Stratton may substitute an engine of higher rated power for this Series engine.
All power levels stated gross power per SAE J1940
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YOUR KEY TO THE WORLD’S FINEST ENGINES
This chart explains the unique Briggs & Stratton numerical model designation system. It is possible to determine most of
the important mechanical features of the engine by merely knowing the model number. Here is how it works:
A. The first one or two digits indicate the approximate CUBIC INCH DISPLACEMENT.
B. The first digit after the displacement indicates the BASIC DESIGN SERIES, relating to
cylinder construction, ignition, general configuration, etc.
C. The second digit after the displacement indicates ORIENTATION OF CRANKSHAFT.
D. The third digit after the displacement indicates TYPE OF BEARINGS, and whether or not
the engine is equipped with REDUCTION GEAR or AUXILIARY DRIVE.
E. The last digit indicates the TYPE OF STARTER.
BRIGGS & STRATTON MODEL NUMBERING SYSTEM
A
CUBIC INCH
DISPLACEMENT
�2-61
FIRST DIGIT
AFTER DISPLACEMENT
B
SECOND DIGIT
AFTER DISPLACEMENT
C
THIRD DIGIT
AFTER DISPLACEMENT
D
CRANKSHAFT
ORIENTATION
PTO BEARING,
REDUCTION GEAR,
AUXILIARY DRIVE,
LUBRICATION�
BASIC
DESIGN SERIES
0-9
A-Z
0 to 4
5 to 9
A to G
H to Z
−
−
−
−
0 − Plain Bearing
3 − Ball Bearing
4 − Ball Bearing
Pressure Lubrication
5 − Plain Bearing
Gear Reduction
(6 to 1) CCW Rotation
Horizontal Shaft
Vertical Shaft
Horizontal Shaft
Vertical Shaft
FOURTH DIGIT
AFTER DISPLACEMENT
E
TYPE OF STARTER
0
2
5
6
7
−
−
−
−
−
Without Starter
Rewind Starter
Electric Starter
Alternator Only
Electric Starter
with Alternator
6 − Ball Bearing
Gear Reduction
(2 to 1) CCW Rotation
7 − Plain Bearing
Pressure Lubrication
9 − Plain Bearing
Auxiliary Drive
EXAMPLE − To identify Model 303447:
30
3
30 Cubic Inch
Design Series 3
4
Horizontal Shaft
4
Ball Bearing
Pressure Lubrication
7
Electric Starter
with Alternator
TYPE 123401, The type number identifies the engines mechanical parts, color of paint, decals, governed speed, and
Original Equipment Manufacturer.
CODE 01061201, The code is the manufacturing date and is read as follows:
YEAR
01
MONTH
06
DAY
12
ASSEMBLY LINE AND MANUFACTURING PLANT
01
Column D historical numbers that have been discontinued include: 1- Plain Bearing/DU, 2- Sleeve Bearing Flange Mounting Splash Lube, 8- Plain Bearing Auxiliary Drive (PTO) Perpendicular to Crankshaft
Column E historical numbers that have been discontinued include: 1- Rope Starter, 3- Electrical Starter Only 110 or 230 Volt Gear Drive, 4- Electrical Starter/110 or 230 Volt Gear Drive with Alternator,
7- Electrical Starter Only 12 or 24 Volt Gear Drive, 8- Vertical Pull Starter or Side Pull Starter, 9- Mechanical Starter and A- Electrical Starter 12 or 24 Volt Gear Drive with Alternator & Inverter
Revised 2/11
All power levels stated gross power per SAE J1940
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BRIGGS & STRATTON ENGINE WARRANTY POLICY
April 2012
LIMITED WARRANTY
Briggs & Stratton warrants that, during the warranty period specified below, it will repair or replace, free of charge, any part that is defective in material or workmanship or both.
Transportation charges on product submitted for repair or replacement under this warranty must be borne by purchaser. This warranty is effective for and is subject to the time
periods and conditions stated below. For warranty service, find the nearest Authorized Service Dealer in our dealer locator map at BRIGGSandSTRATTON.COM. The
purchaser must contact the Authorized Service Dealer, and then make the product available to the Authorized Service Dealer for inspection and testing.
There is no other express warranty. Implied warranties, including those of merchantability and fitness for a particular purpose, are limited to one year from
purchase, or to the extent permitted by law. All other implied warranties are excluded. Liability for incidental or consequential damages are excluded to the extent
exclusion is permitted by law. Some states or countries do not allow limitations on how long an implied warranty lasts, and some states or countries do not allow the exclusion
or limitation of incidental or consequential damages, so the above limitation and 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 and country to country **.
STANDARD WARRANTY TERMS *
Y
Brand/Product Type
Consumer Use
Commercial Use
Vanguardt J
3 years
3 years
Commercial Turf Seriest
2 years
2 years
Extended Life Seriest; I/C®; Intekt I/C®; Intekt Pro;
Professional Seriest with Dura-Boret Cast Iron Sleeve;
850 Seriest with Dura-Boret Cast Iron Sleeve;
Snow Series MAXt with Dura-Boret Cast Iron Sleeve
All Other Briggs & Stratton Engines Featuring Dura-Boret Cast Iron Sleeve
2 years
1 year
All Other Briggs & Stratton Engines
2 years
90 days
*
These are our standard warranty terms, but occasionally there may be additional warranty coverage that was not determined at time of publication. For a listing of current
warranty terms for your engine, go to BRIGGSandSTRATTON.COM or contact your Briggs & Stratton Authorized Service Dealer.
** In Australia -- Our goods come with guarantees that cannot be excluded under the Australian Consumer Law. You are entitled to a replacement or refund for a major
failure and for compensation for any other reasonably foreseeable loss or damage. You are also entitled to have the goods repaired or replaced if the goods fail to be of
acceptable quality and the failure does not amount to a major failure. For warranty service, find the nearest Authorized Service Dealer in our dealer locator map at
BRIGGSandSTRATTON.COM, or by calling 1300 274 447, or by emailing or writing to salesenquiries@briggsandstratton.com.au, Briggs & Stratton Australia Pty Ltd, 1
Moorebank Avenue, Moorebank, NSW , Australia, 2170.
Y
Home Standby Generator applications: 2 years consumer warranty only. No commercial warranty. This warranty does not apply to engines on equipment used for prime
power in place of a utility. Engines used in competitive racing or on commercial or rental tracks are not warranted.
J
Vanguard installed on standby generators: 2 years consumer use, no warranty commercial use. Vanguard installed on utility vehicles: 2 years consumer use, 2 years
commercial use. Vanguard 3-cylinder liquid cooled: see Briggs & Stratton 3/LC Engine Warranty Policy.
The warranty period begins on the date of purchase by the first retail consumer or commercial end user, and continues for the period of time stated in the table above. “Consumer
use” means personal residential household use by a retail consumer. “Commercial use” means all other uses, including use for commercial, income producing or rental purposes.
Once an engine has experienced commercial use, it shall thereafter be considered as a commercial use engine for purposes of this warranty.
No warranty registration is necessary to obtain warranty on Briggs & Stratton products. Save your proof of purchase receipt. If you do not provide proof of the initial
purchase date at the time warranty service is requested, the manufacturing date of the product will be used to determine the warranty period.
About Your Warranty
Briggs & Stratton welcomes warranty repair and apologizes to you for being
inconvenienced. Any Authorized Service Dealer may perform warranty repairs. Most
warranty repairs are handled routinely, but sometimes requests for warranty service may
not be appropriate. To avoid misunderstanding which might occur between the customer
and the dealer, listed below are some of the causes of engine failure that the warranty
does not cover.
Normal wear: Engines, like all mechanical devices, need periodic parts service and
replacement to perform well. Warranty will not cover repair when normal use has
exhausted the life of a part or an engine. Warranty would not apply if engine damage
occurred because of misuse, lack of routine maintenance, shipping, handling,
warehousing or improper installation. Similarly, warranty is void if the serial number of the
engine has been removed or the engine has been altered or modified.
Improper maintenance: The life of an engine depends upon the conditions under which
it operates, and the care it receives. Some applications, such as tillers, pumps and rotary
mowers, are very often used in dusty or dirty conditions, which can cause what appears
to be premature wear. Such wear, when caused by dirt, dust, spark plug cleaning grit, or
other abrasive material that has entered the engine because of improper maintenance, is
not covered by warranty.
4
Parts which are scored or broken because an engine was operated with insufficient
or contaminated lubricating oil, or an incorrect grade of lubricating oil (check and
refill when necessary, and change at recommended intervals). OIL GARD may not
shut down running engine. Engine damage may occur if oil level is not properly
maintained.
5
Repair or adjustment of associated parts or assemblies such as clutches,
transmissions, remote controls, etc., which are not manufactured by Briggs &
Stratton.
6
Damage or wear to parts caused by dirt, which entered the engine because of
improper air cleaner maintenance, re-assembly, or use of a non-original air cleaner
element or cartridge. At recommended intervals, clean and/or replace the filter as
stated in the Operator’s Manual.
7
Parts damaged by over-speeding, or overheating caused by grass, debris, or dirt,
which plugs or clogs the cooling fins, or flywheel area, or damage caused by
operating the engine in a confined area without sufficient ventilation. Clean engine
debris at recommended intervals as stated in the Operator’s Manual.
8
Engine or equipment parts broken by excessive vibration caused by a loose engine
mounting, loose cutter blades, unbalanced blades or loose or unbalanced impellers,
improper attachment of equipment to engine crankshaft, over-speeding or other
abuse in operation.
9
A bent or broken crankshaft, caused by striking a solid object with the cutter blade of
a rotary lawn mower, or excessive v-belt tightness.
This warranty covers engine related defective material and/or workmanship only,
and not replacement or refund of the equipment to which the engine may be
mounted. Nor does the warranty extend to repairs required because of:
10 Routine tune-up or adjustment of the engine.
1
Problems caused by parts that are not original Briggs & Stratton parts.
11
2
Equipment controls or installations that prevent starting, cause unsatisfactory engine
performance, or shorten engine life. (Contact equipment manufacturer.)
3
Leaking carburetors, clogged fuel pipes, sticking valves, or other damage, caused
by using contaminated or stale fuel.
Warranty service is available only through Briggs & Stratton Authorized Service
Dealers. Locate your nearest Authorized Service Dealer in our dealer locator map
on BRIGGSandSTRATTON.COM or by calling 1-800-233-3723.
English
272204
en
All power levels stated gross power per SAE J1940
Engine or engine component failure, i.e., combustion chamber, valves, valve seats,
valve guides, or burned starter motor windings, caused by the use of alternate fuels
such as, liquified petroleum, natural gas, gasoline formulated with ethanol greater
than 10%, etc.
1
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