User's Manual

GB
4
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.
To prevent acci-
dental starting, re-
move spark plug
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, 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.
©)
Gear reduction, if equipped
Remove oil fill plug
 and oil level plug .Drainoil
every 100 hours of operation or every season. To refill,
pour SAE 30 oil into oil fill hole until it runs out level
check hole. Replace both plugs. Oil fill plug has a vent
hole
 and must be installed ontop of gear case cover.
Air cleaner service (see fig.
§)
Replace pre-cleaner , if equipped, and/or cartridge 
if very dirty or damaged.
1. Loosen screws or remove knob. Then remove
cover.
2. Remove pre-cleaner, if equipped, and cartridge
carefully to prevent debris from falling into
carburetor.
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 ALL
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.
3. Reinstall cartridge and pre-cleaner, if equipped.
4. Replace cover and tighten screws or knob
securely.
Maintenance Cont’d
Spark plug service (see fig. ¨)
DO NOT check
f
or spark
with spark plug removed.
Use only Briggs & Stratton
Spark Tester , to check
for spark.
DO NOT crank engine with spark plug removed. If
engine is flooded, place throttle in FASTandcrank until
engine starts.
Spark plug gap
 should be .76 mm or 0.030 in.
Clean/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: Insome 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 chaff and debris 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.
A
ccumulation o
f
debris around mu
f
-
fler  could cause a fire. Inspect
and clean before every use.
To assure smooth operation, keep governor linkage,
springs and controls free of debris.
If muffler is equipped with spark arrester screen ,
remove spark arrester screen for cleaning and inspec-
tion every 50 hours or every season. Replace if
damaged.
Clean cooling system. Chaff or debris may clog
engine’s air cooling system, especially after prolonged
operation. Internal cooling fins and surfaces may
require cleaning to prevent overheating and engine
damage. Remove blower housing and clean as shown
.
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
D Clean around muffler
Every 25 hours or every season
D Change oil if operating under heavy load or
high ambient temperature
D Service air cleaner 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/clean spark plug
D Change oil, gear reduction, if equipped
D Clean cooling system*
* Clean more often under dusty conditions,or
when airborne debris or chaff is present.
Partial List of Genuine Briggs & Stratton Parts
Briggs & Stratton (or
equivalent)
Part
Part No.
Oil (20 oz.) 100005........................
Oil (48 oz.) 100028........................
Oil pump kit (uses standard electric drill 5056.....
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)
Flat air cleaner cartridge 491588 (5043).........
Flat air cleaner pre-cleaner 491435............
Resistor spark plug 802592E.................
Standard spark plug 492167.................
Long life platinum spark plug 992041 (5062)......
(used on most L-head engines)
Spark tester 19368........................
Spark plug wrench 89838 (5023)..............
Spark arrester 399541......................