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4
Maintenance (see figs. ¦§¨)
Also, see Maintenance Schedule. F ollow the hourly or
calendar intervals, whichever occur first. More frequent
service i s required w hen operating i n adverse c onditions.
Seeany Authorized Briggs& Stratton Dealerfor correct
replacement parts.
To prevent acci-
dental starting, re-
move spark plug
wire ➊ and
ground it before
servicing, and dis-
connect battery at negative terminal, if equipped.
Oil service (see fig.
¦)
Check oil level regularly.
Be sure correct oil level is maintained. Check every 8
hours or daily, before starting engine. See oil filling
procedure, Oil Recommendations.
Change oil.
Change oil after first 8 hours of operation. Change oil
while engine is warm. Refill with new oil of recom-
mended SAE viscosity grade. (see fig.
©)
Change oil filter ➋
Replace oil filter after every 100 hours of operation or
every season, whichever occurs first. Before installing
new filter, lightly oil filter gasket with fresh, clean engine
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 oil leaks. Stop engine.
Recheck oil level and add oil if required.
Oil pressure
If oil pressure drops below 4-6 psi (.2-.4 kg/cm
2
), an oil
pressure switch (if engine is equipped) will either
activate a warning device or stop the engine. Check oil
level withdipstick. Ifoil levelis between ADDand FULL
markon dipstick, donottry torestart engine
.Contactan
Authorized Briggs & Stratton Service Dealer. Do
not
operate engine until oil pressure is corrected
.
If oil level is below ADD mark on dipstick, add oil to bring
level to FULL mark. Restart engine and check oil
pressure. If pressure is normal, continue to operate
engine.
Note: Oil pressure gauge, if engine is equipped, is
supplied by manufacturer of equipment.
Spark plug service (see fig.
¨)
DO NOT check
f
or spark
with spark plugs removed.
Use only Briggs & Stratton
Spark Tester ➋, to check
for spark.
DO NOT crank engine with spark plug removed. If
engine isflooded, place throttle inFAST andcrank until
engine starts.
Spark plug gap
➌ should be .76 mm or 0.030 in.
Replace spark plugs every season. Spark tester and
spark plug wrench are 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.
Maintenance Cont’d
Air cleaner, dual element
Replace pre-cleaner or cartridge if very dirty or damaged.
To service pre-cleaner, wash in liquid detergent and
water. Squeeze dry in a clean c loth. Saturate in engine
oil. Squeeze in clean, absorbent cloth to remove
excess oil.
1. See illustrations (see fig.
§) for disassembly
and reassembly of your air cleaner style.
2. Carefully remove air cleaner cartridge and pre-
cleaner, preventing debris from entering carbure-
tor.
3. Install pre-cleaner (if equipped) in base with
mesh side up.
4. Install cartridge on pre-cleaner.
5. Replace cover. Toensure proper fit, tabs must be
hooked into slots. Tabs are painted a different
color in some instances.
6. Latch handle or tighten knobs completely to
secure cover.
7. Reinstall p re-cleaner (mesh side up) and cartridge.
8. Replace cover and knobs.
CAUTION: Improper installation of air cleaner
cover may cause damage to engine.
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This filter, IF STAMPED
‘WASHABLE’, can be
washed with mild soap in
warm water. IMPORTANT:
Rinse in tap water with
SCREEN side up allowing
dirt and debris to filter out.
Leave filter to dry overnight
before reinstalling.
Keep engine clean (see fig. ¨)
Periodically remove grass/chaff buildup from engine.
Do not spray engine with water because water could
contaminate fuel. Use a brush or compressed air.
A
ccumulation o
f
debris around ex-
haust manifold/muffler ➍ could
cause a fire. Inspect and clean
before every use.
Keep linkage, springs and controls
➍ free of debris.
If muf fler is equipped with spark a rrester s creen, remov e
spark arrester screen for cleaning and inspection every 50
hours or every season. Replac e if damaged.
Replace in-line
f
uel
f
ilter ➏ every
season. Drain fuel tank or close fuel
shut-off valve before replacing filter.
Grass or chaff may clog engine’s air cooling system,
especially after prolonged service cutting tall, dry grass.
Every 100 hours or every season remove rotating
screen, air cleaner cover and blower housing
➏ toclean
internal cooling fins and surfaces to prevent overheat-
ing and engine damage. To prevent debris from
entering carburetor, it is important to cover the carbure-
tor air intake
➐ located above and behind carburetor
(inset) when cleaning cooling system.
Check valve clearance (intake and exhaust .10-.15mm)
Maintenance Schedule
Follow the hourly or calendar intervals, whichever
occur first. More frequent service is required when
operating in adverse conditions noted below.
First 8 Hours
D Change oil
Every 8 hours or daily
D Check oil level
D Clean around muffler, linkage and springs
Every 25 hours or every season
D Change oil if operating under heavy load or
high ambient temperature
D Replace air cleaner pre-cleaner*
Every 50 hours or every season
D Change oil
D Clean Extended Life Series air cleaner
cartridge.*
D Clean and inspect spark arrester, if equipped
Every 100 hours or every season
D Service air cleaner cartridge*
D Replace oil filter, if equipped
D Clean cooling system*
Every 200 hours or every season
D Replace Extended Life Series air cleaner
cartridge*
Every season
D Replace spark plugs
D Replace in-line fuel filter
D Check valve clearance
* 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
Part
Part No.
Oil (20 oz.) 100005........................
Oil (48 oz.) 100028........................
Extended Life Series Oil filter 696854.........
Oil filter (6 cm long) 492932 -or- 5049...........
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) 5041.......
Fuel filter 493629.........................
Extended Life Series air cleaner cartridge 695667
Air cleaner cartridge 499486.................
Air cleaner pre-cleaner 273638...............
Resistor spark plug 691043 -or- 491055.........
Long life platinum spark plug 5066.............
(used on most OHV engines)
Spark tester 19368........................
Spark plug wrench 19374...................