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Maintenance
(see figs.
See Maintenance Schedule, next page.
Follow the hourly or calendar intervals, whichever occur first.
More frequent service is required when operating in adverse
conditions.
To prevent accidental starting, remove spark plug
Ê
wire
and ground it before servicing, and
disconnect battery at negative terminal, if
equipped.
Oil service (see fig.
)
Check oil level regularly.
Be sure correct oil level is maintained. Check every 5 hours or
daily, before starting engine. See oil filling procedure under Oil
Recommendations.
Preferably drian oil from top of engine as illustrated. Oil can be
drained form bottom if necessary.
Change oil.
Change oil after first 5 hours of operation. Change oil while
engine is warm. Refill with new oil of recommended SAE
viscosity grade. (see fig.
)
Before tipping engine or equipment to drain oil,
drain fuel from tank by running engine until fuel
tank is empty.
If draining oil from top of engine, keep air cleaner
Oil can be drained with spark plug side up, if necessary.
Ì
By removing drain plug
with a ratchet and square extension
Í
, oil can be drained from engine bottom.
Change oil filter, if equipped
Replace oil filter after every 100 hours of operation. Drain
engine oil and replace with fresh oil. Before installing new filter,
lightly oil filter gasket with fresh, clean oil. Screw filter on by
hand until gasket contacts oil filter adapter. Tighten 1/2 to 3/4
turn more. Start and run engine at idle to check for leaks. Stop
engine. Re check oil level. Add oil if required.
Air cleaner service (see fig.
)
Replace if very dirty or damaged. (see fig.
Wash pre cleaner in liquid detergent and water. Allow to dry
thoroughly before using. Do not oil pre cleaner.
Clean cartridge by tapping gently on a flat surface. Do not use
petroleum solvents, e.g., kerosene, which will cause cartridge
to deteriorate. Do not use pressurized air, which can damage
cartridge. Do not oil cartridge.
Oval air cleaner
Ë
1. Loosen screws
and lift cover
2. Carefully remove pre cleaner
Î
cartridge assembly
.
3. After servicing pre cleaner and cartridge, assemble
pre cleaner on cartridge.
4. Install cartridge/pre cleaner assembly in base
5. Place cover on air cleaner and tighten screws securely
to base.
Square air cleaner
Ë
1. Loosen screw
and tilt cover
Í
remove pre cleaner
(if equipped) and cartridge
assembly from cover
After servicing pre cleaner and cartridge, place
2.
pre cleaner, if equipped, over cartridge pleats
with arrows in direction shown (pre cleaner lip
will be at bottom of pleats).
3. Install pre cleaner and cartridge assembly in cover.
Ð
4. Insert tabs on cover into slots
5. Tilt cover up and tighten screw securely to base.
Maintenance Cont'd
)
Spark plug service (see fig.
Spark plug gap
Replace spark plug every 100 hours or every season,
whichever occurs first. Spark plug wrench is available from any
Authorized Briggs & Stratton Service Dealer.
Note: In some areas, local law requires using a resistor spark
plug to suppress ignition signals. If this engine was originally
equipped with resistor spark plug, use same type of spark plug
for replacement.
Keep engine clean (see fig.
To assure smooth operation, keep governor linkage, springs
and controls
If muffler is equipped with spark arrester screen
spark arrester screen for cleaning and inspection. Replace if
Ë
side up.
damaged.
Periodically remove grass and chaff build up from engine.
Clean finger guard
because water could contaminate fuel. Clean with a brush or
compressed air.
Note: Grass or chaff may clog engine's air cooling system,
especially after prolonged operation cutting tall, dry grass.
Internal cooling fins and surfaces may require cleaning to
prevent overheating and engine damage. To obtain service,
contact an Authorized Briggs & Stratton Service Dealer.
Check valve clearance (intake and exhaust are .10 .20 mm).
Maintenance Schedule
Follow the hourly or calendar intervals, whichever
)
C
occur first. More frequent service is required when
operating in adverse conditions noted below.
First 5 Hours
D Change oil
Every 5 hours or daily
D Check oil level
D Clean governor linkage, springs and controls
Ì
.
D Clean around muffler
Í
(if equipped) and
Every 25 hours or every season
D Change oil if operating under heavy load or high
ambient temperature
Ï
D Service air cleaner pre cleaner*
.
D Service air cleaner cartridge, if not equipped with
pre cleaner*
Every 50 hours or every season
Ì
down. Carefully
D Change oil
Î
D Inspect spark arrester, if equipped
Every 100 hours or every season
D Service air cleaner cartridge, if equipped with
pre cleaner
Ï
D Change oil filter, if equipped
D Clean cooling system*
D Replace spark plug
in bottom of base.
Every season
)
DO NOT check for spark with spark plug removed.
Use only Briggs & Stratton Spark Tester
to check for spark. (see fig.
)
D
DO NOT crank engine with spark plug removed.
If engine is flooded, place throttle in FAST and
crank until engine starts.
Ì
should be .76 mm or 0.030 in.
)
Í
free of debris.
Accumulation of debris around muffler
cause a fire. Inspect and clean before every use.
Ð
. Do not spray engine with water to clean
3
D Check valve clearance
*
Clean more often under dusty conditions,or when
airborne debris is present or after prolonged opera
tion cutting tall, dry grass.
Ë
,
Storage
Engines stored over 30 days need to be protected or drained of
fuel to prevent gum from forming in fuel system or on essential
carburetor parts.
For engine protection, we recommend use of Briggs & Stratton
Gasoline Additive
B
Stratton Service Dealer. Mix Additive with fuel in fuel tank or
storage container. Run engine for a short time to circulate
Additive through carburetor. Engine and fuel can be stored up to
24 months.
Note: If Additive is not used or if engine is operating on gasoline
containing alcohol, e.g. gasohol, remove all fuel from tank and
run engine until it stops from lack of fuel.
1. While engine is still warm, drain oil from crankcase.
Refill with fresh oil of recommended SAE viscosity grade.
(see fig.
)
2. Remove spark plug and pour about 15 ml (1/2 oz) of
engine oil into cylinder. Replace spark plug and crank
Î
could
slowly to distribute oil.
3. Clean grass and chaff from cylinder and cylinder head
fins, under finger guard and around muffler.
Ï
, remove
4. Store in a clean and dry area, but NOT near a stove,
furnace or water heater which uses a pilot light or any
device that can create a spark.
Service
See an Authorized Briggs & Stratton Service Dealer. Each one
carries a stock of Genuine Briggs & Stratton Parts and is
equipped with special service tools. Trained mechanics
assure expert repair service on all Briggs & Stratton engines.
Only dealers advertising as Authorized Briggs & Stratton" are
required to meet Briggs & Stratton standards.
When you purchase equipment powered by a
Briggs & Stratton engine, you are assured of
highly skilled, reliable service at more than
30,000 Authorized Service Dealers world
wide, including more than 2,700 Master
Service Technicians. Look for these signs
wherever Briggs & Stratton service is offered.
You may locate your nearest Authorized
Briggs & Stratton Service Dealer in the
Yellow Pages" directory under Engines,
Gasoline" or Gasoline Engines," or Lawn
Mowers" or similar category. Or log on to our dealer locator
map on our web site www.briggsandstratton.com
Note: Walking fingers logo and Yellow Pages" are registered
trademarks in various jurisdictions.
An illustrated shop manual includes Theories of Operation,"
common specifications and detailed information covering
adjustment, tune up and repair of Briggs & Stratton OHV,
single cylinder, 4 cycle engines. Order P/N 274008 from an
Authorized Briggs & Stratton Service Dealer.
Insist on Genuine Briggs & Stratton replacement parts with our
logo on the box and/or part. Non original parts may not perform
as well and may void your warranty.
available from an Authorized Briggs &
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