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Maintenance
(see figs.
Also, see Maintenance Schedule. Follow the hourly or
calendar intervals, whichever occur first. More frequent
service is required when operating in adverse conditions.
See any Authorized Briggs & Stratton Dealer for correct
replacement parts
To prevent acci−
dental starting, re−
move spark plug
wire Ê 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, Oil Recommendations.
Change oil.
Change oil after first 5 hours of operation. Change oil
while engine is warm. Refill with new oil of recom−
mended SAE viscosity grade. (see fig.
Air cleaner service
Replace oil foam element or pre−cleaner, if equipped,
or cartridge if very dirty or damaged.
Air cleaner, dual element (see fig.
Ë
1. Remove knob and cover
.
2. Carefully remove knob, cartridge
Í
pre−cleaner
, if equipped, to prevent debris
from falling into carburetor.
Î.
3. Carefully clean base
To service pre−cleaner, wash in liquid detergent and
water. Squeeze dry in a clean cloth. Saturate in engine
oil. Squeeze in clean, absorbent cloth to remove
excess oil.
To service cartridge, clean 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.
4. Reassemble pre−cleaner on cartridge and install
assembly firmly in base and tighten knob securely.
5. Replace cover and tighten knob securely.
Maintenance Cont'd
)
Spark plug service (see fig.
DO NOT crank engine with spark plug removed. If
engine is flooded, place throttle in FAST and crank until
engine starts.
Spark plug gap
Replace spark plug every 100 hours or every season,
whichever occurs first. Spark tester and spark plug
wrench are 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.
Periodically remove grass and chaff build−up from
engine. Clean finger guard. Do not spray engine with
water to clean because water could contaminate fuel.
)
Clean with a brush or compressed air.
Ì
and
If muffler is equipped with spark arrester screen
remove spark arrester screen for cleaning and inspection
every 50 hours or every season. Replace if damaged.
Clean cooling system. Grass or chaff may clog engine's
air cooling system, especially after prolonged service
cutting tall, dry grass. Internal cooling fins and surfaces
may require cleaning to prevent overheating and
engine damage. Remove blower housing to clean
areas within heavy line
)
DO NOT check for spark
with spark plug removed.
Use only Briggs & Stratton
Ë
Spark Tester
, to check
for spark.
Ì
should be .76 mm or 0.030 in.
)
Accumulation of debris around muf−
fler could cause a fire. Inspect and
clean before every use.
Î
Replace in−line fuel filter. Drain fuel tank
or close fuel shut−off valve before
Ë
replacing filter (see fig.
).
Ï
.
4
Maintenance Schedule
Follow the hourly or calendar intervals, whichever
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 finger guard and around muffler
Every 25 hours or every season
D Change oil if operating under heavy load or
high ambient temperature
D Service air cleaner Oil Foam element or
pre−cleaner, if equipped*
D Service air cleaner cartridge if no pre−cleaner*
Every 50 hours or every season
D Change oil
D Clean and inspect spark arrester, if equipped.
Every 100 hours or every season
D Service air cleaner cartridge if equipped with
pre−cleaner*
D Replace in−line fuel filter, if equipped.
D Clean cooling system*
D Clean or replace spark plug
*
Clean more often under dusty conditions, or
when airborne debris is present or after
prolonged operation cutting tall, dry grass.
Partial List of Genuine Briggs & Stratton Parts
,
Briggs & Stratton (or equivalent)
Part
Oil (20 oz.)
. . . . . . . . . . . . . . . . . . . . . . . .
Oil (48 oz.)
. . . . . . . . . . . . . . . . . . . . . . . .
Oil pump kit (uses standard electric drill
to remove oil from engine quickly)
Fuel stabilizer (1 oz., 30 ml single use pouch) 992030
Fuel stabilizer (4.2 oz., 125 ml bottle)999005E (5041)
Fuel filter (without fuel pump)
Fuel filter (with fuel pump)
. . . . . . . . . . . . .
Air cleaner cartridge (6 cm high)
Air cleaner pre−cleaner (6 cm high)
Air cleaner cartridge (7.5 cm high)
Air cleaner pre−cleaner (7.5 cm high)
Resistor spark plug
. . . . . . . . . . . . . . . . .
Standard spark plug
. . . . . . . . . . . . . . . .
Long life platinum spark plug
(used on most L−head engines)
Spark tester
. . . . . . . . . . . . . . . . . . . . . . . .
Spark plug wrench
. . . . . . . . . . . . .
Spark arrester
. . . . . . . . . . . . . .
Part No.
100005
100028
. . . . .
5056
. . . . . .
298090 (5018)
394358
. . . . . . . . .
493910
. . . . . . .
272477
. . . . . . .
496894
. . . . . .
272403
802592E
492167E
. . . . . .
992041 (5062)
19368
89838 (5023)
399541 or 392390
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