Briggs & Stratton 460000 - Manual (Page 6)

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.
See any Authorized Briggs & Stratton Dealer for 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 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.
© )
Change oil filter ➋ , if equipped .
Replace oil filter after every 100 hours of operation or
every season, whichever occurs first. Remove used oil
filter. 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 oil leaks. Stop
engine. Recheck oil level and add oil if required.
Oil pressure
Normal warm operating oil pressure for a pressure lube
engine (engine with oil filter) is 10 to 50 psi at normal
operating temperature. If pressure drops below normal
range, stop engine and check oil level with dipstick. If oil
level is between ADD and FULL mark on dipstick, Do
not restart engine. Contact an 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.
Air cleaner, dual element (see fig.
§ )
Replace pre-cleaner ➋ , if equipped, or cartridge ➌ if
very dirty or damaged.
1. Remove screw and cover.
2. Carefully slide pre-cleaner off cartridge.
3. Remove wing nuts ➍ and cartridge plate ➎ .
Carefully remove cartridge to prevent debris from
entering 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
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. Reinstall cartridge, cartridge plate and wing nuts.
5. Reinstall pre-cleaner on cartridge.
6. Replace cover and tighten screw securely.
Maintenance Cont’d
Spark plug service (see fig. ¨ )
DO NOT check for 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 is flooded, place throttle in FAST and crank 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: 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/chaff buildup from engine.
Do not spray engine with water because water could
contaminate fuel. Use a brush or compressed air.
Accumulation of grass/chaff around
exhaust manifold/muffler ➍ could
cause a fire. Inspect and clean
before every use.
Keep linkage, springs and controls ➍ free of debris.
If muffler is equipped with spark arrester screen ➎ ,
remove spark arrester screen for cleaning and inspection
every 50 hours or every season. Replace if damaged.
Replace in-line fuel filter 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, clean internal
cooling fins and surfaces to prevent overheating and
engine damage. Remove blower housing to clean
areas shown ➐ .
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 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 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 oil filter, if equipped
D Clean cooling system*
Every season
D Clean/replace spark plugs
D Replace in-line fuel filter
Every 100 - 300 hours
D Clean combustion chamber**
* Clean more often under dusty conditions, or
when airborne debris is present or after
prolonged operation cutting tall, dry grass.
** See an Authorized Briggs & Stratton Service
Dealer.
Partial List of Genuine Briggs & Stratton Parts
Briggs & Stratton (or equivalent)
Part Part No.
Oil (20 oz.) 100005 . . . . . . . . . . . . . . . . . . . . . . . .
Oil (48 oz.) 100028 . . . . . . . . . . . . . . . . . . . . . . . .
Oil filter (6 cm long) 492932 (5049) . . . . . . . . . . . . .
Oil filter (8.5 cm long) 491056 . . . . . . . . . . . . . . . .
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)
Fuel filter (without fuel pump) 298090 (5018) . . . . . .
Fuel filter (with fuel pump) 493629 . . . . . . . . . . . . .
Air cleaner cartridge 394019 . . . . . . . . . . . . . . . . .
Air cleaner pre-cleaner 272490 . . . . . . . . . . . . . . .
Air cleaner (cartridge and pre-cleaner kit) 5050 . . . .
Resistor spark plug 802592E . . . . . . . . . . . . . . . . .
Spark plug 492167E . . . . . . . . . . . . . . . . . . . . . . .
Long life platinum spark plug 5062 . . . . . . . . . . . . .
(used on most L-head engines)
Spark tester 19368 . . . . . . . . . . . . . . . . . . . . . . . .
Spark plug wrench 89838 . . . . . . . . . . . . . . . . . . .
Spark arrester 392390 . . . . . . . . . . . . . . . . . . . . . .