Briggs & Stratton 250400 - Manual (Page 6)

Document: - page 4 (Black)
Screen angle and frequency: 45.0000, 150.0000
GB
4
Maintenance
(see figs. )
See Maintenance Schedule. Follow the hourly or
calendar intervals, whichever occur first. More frequent
service is required when operating in adverse conditions.
To prevent acciĆ
dental starting, reĆ
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 under Oil Recommendations.
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.

)
Gear reduction, if equipped
Remove oil fill plug Ë and oil level plug Ì . Drain oil
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 Í and must be installed on top of gear case cover.
Air cleaner service (see fig. )
Replace preĆcleaner Ë and/or cartridge Ì if very dirty
or damaged.
1. Loosen screws. Then remove cover and air
cleaner assembly from base.
2. Remove air cleaner assembly from inside of
cover and disassemble.
To service preĆcleaner, 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., keroĆ
sene, which will cause cartridge to deteriorate. Do not
use pressurized air, which can damage cartridge. Do
not oil cartridge.
3. Install retainer Í , preĆcleaner (screen side of
preĆcleaner toward cartridge pleats) and carĆ
tridge in cover.
4. Insert tabs Î on cover into slots Î in base.
Tighten cover screws securely.
Spark plug service (see fig. )
DO NOT check for spark
with spark plug removed.
Use only Briggs & Stratton
Spark Tester Ï , 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 Ð should be 0.76 mm or 0.030 in.
Clean/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: On Model Series 19E400, 19F400, 19G400
engines use only spark plug, Part No. 496018. On
Model Series 192400, 196400, 197400, 250400,
256400, 257400 engines use standard spark plug, Part
No. 492167 or resistor spark plug, Part No. 802592, as
required.
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 chaff and debris buildĆup from
engine. Do not spray engine with water to clean
because water could contaminate fuel. Clean with a
brush or compressed air.
Accumulation of debris around mufĆ
fler Ë could cause a fire. Inspect
and clean before every use.
If muffler is equipped with spark arrester Ì , remove
spark arrester screen for cleaning and inspection every
50 hours or every season. Replace if damaged.
To assure smooth operation, keep governor linkage,
springs and controls Í free of debris.
Replace inĆline fuel filter Î . Drain fuel
tank or close fuel shutĆoff valve
before replacing filter.
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 Ï .
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 around muffler, springs and linkage
Every 25 hours or every season
D Change oil if operating under heavy load or
high ambient temperature
D Service air cleaner preĆcleaner*
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*
D Replace inĆline fuel filter, if equipped.
D Replace/clean spark plug
D Change gear reduction oil, 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)
Fuel filter (without fuel pump) 298090 (5018) . . . . . .
Fuel filter (with fuel pump) 394358 or 493629 . . . . .
Air cleaner cartridge 492889 . . . . . . . . . . . . . . . . .
Air cleaner preĆcleaner 496077 . . . . . . . . . . . . . . .
Resistor spark plug 496018E . . . . . . . . . . . . . . . . .
(models 19E400, 19F400, 19G400)
Long life platinum spark plug 5066 . . . . . . . . . . . . .
(models 19E400, 19F400, 19G400)
Resistor spark plug (models 192400, 802592E . . . .
196400, 197400, 250400, 256400, 257400)
Standard spark plug (models 192400, 492167 . . . . .
196400, 197400, 250400, 256400, 257400)
Long life platinum spark plug 992041 (5062) . . . . . .
(models 192400,196400,197400,250400,256400,257400)
Spark tester 19368 . . . . . . . . . . . . . . . . . . . . . . . .
Spark plug wrench 89838 (5023) . . . . . . . . . . . . .
Spark arrester 399541 or 392390 . . . . . . . . . . . . . .