Briggs & Stratton 250400 - Manual (Page 5)

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3
Oil Recommendations
(see fig.

)
Engine shipped from Briggs & Stratton without oil.
Before starting engine, fill with oil. Do not overĆfill.
Use a high quality detergent oil classified For Service
SF, SG, SH, SJ" or higher such as Briggs & Stratton
30W, Part Number 100005 (20 oz.) or 100028 (48 oz.).
Use no special additives with recommended oils.
Do not mix oil with gasoline.
Choose the SAE viscosity grade of oil from this chart
that matches the starting temperature anticipated
before the next oil change.
Note: Synthetic oil meeting ILSAC
GFĆ2, API certification mark and API serĆ
vice symbol (shown at left) with SJ/CF
ENERGY CONSERVING" or higher, is an
acceptable oil at all temperatures. Use of
synthetic oil does not alter required oil
change intervals.
* Air cooled engines run hotter than automotive
engines. The use of nonĆsynthetic multiĆviscosity
oils (5WĆ30, 10WĆ30, etc.) in temperatures above
40° F (4° C) will result in higher than normal oil
consumption. When using a multiĆviscosity oil,
check oil level more frequently.
** SAE 30 oil, if used below 40° F (4° C), will result
in hard starting and possible engine bore
damage due to inadequate lubrication.
Check oil level. Model Series oil capacity is about:
1.3 ltr or 44 oz. for Models 170000 and 190000.
1.4 ltr or 48 oz. for Model 250000.
Place engine level and clean around oil fill
Ê .
Remove dipstick Ë , wipe with clean cloth, insert and
tighten down again. Remove dipstick and check oil
level. Oil should be at FULL mark. If oil is required, add
slowly. Do not overĆfill.
OR
Remove oil filler plug
Ì . Oil should be full to
overflowing Í .
Tighten dipstick or oil filler plug firmly before starting
engine.
Fuel Recommendations
Use clean, fresh, leadĆfree gasoline with a minimum of
77 octane. Leaded gasoline may be used if it is
commercially available and if unleaded is unavailable.
Purchase fuel in quantity that can be used within 30
days. See Storage.
In U.S.A. leaded gasoline may not be used. Some
fuels, called oxygenated or reformulated gasolines, are
gasolines blended with alcohols or ethers. Excessive
amounts of these blends can damage the fuel system
or cause performance problems. If any undesirable
operating symptoms occur, use gasoline with a lower
percentage of alcohol or ether.
This engine is certified to operate on gasoline. Exhaust
Emission Control System: EM (Engine Modifications).
Do not use gasoline which contains Methanol. Do not
mix oil with gasoline.
For engine protection, we recommend using Briggs &
Stratton Fuel Stabilizer available from an Authorized
Briggs & Stratton Service Dealer.
Check fuel level.
Before refueling, allow
engine to cool 2 minutes.
Clean around fuel fill before removing cap to refuel. Fill
tank to approximately 1Ć1/2 inches below top of neck to allow
for fuel expansion. Be careful not to overfill.
Starting
(see figs.

)
ALWAYS KEEP HANDS AND FEET
CLEAR OF EQUIPMENT MOVING PARTS.
Do not use a pressurized starting
fluid. Vapors are flammable.
Start, store and fuel equipment in level position.
Check oil level.
Open fuel shutĆoff valve, if equipped.
CAUTION: OIL GARD, if equipped,
(see 7 fig.
)
is intended to prevent starting an engine that is low on oil.
OIL GARD may not shut down a running engine.
Engine damage may occur if oil level is not properly
maintained and will void warranty coverage. Always
check oil level before starting engine.
If engine is equipped with OIL GARD, and if engine
runs low on oil, light on engine warns of low oil level. If
light flickers and engine cannot be started, or has
stopped and cannot be restarted, add oil. Fill to point of
overflowing at oil fill cap or to FULL mark on dipstick. Do
not overĆfill.
Before starting (see fig.

)
1. Move choke control Ê to CHOKE position.
2. Move throttle control Ë to FAST position, if equipped.
3. Turn fuel shutĆoff valve Ì ON, if equipped.
4. Move stop control Í to ON position, if equipped.
Note: If engine is equipped with Oil Gard, flickering
light in rocker stop switch Í will warn of low oil level or
engine will stop and not be able to be restarted. Add oil.
Fill to FULL mark on dipstick (do not overĆfill) or to
overflowing at oil filler plug.
Rewind starter (see fig.

)
Grasp rope handle and pull slowly until
resistance is felt. Then pull cord rapidĆ
ly to overcome compression, prevent
kickback and start engine. Repeat if necessary with
choke in RUN position throttle in FAST. When engine
starts, operate in FAST.
Electric starter (see fig.  )
On engines equipped with 12 volt starting systems, turn
key to START position Ê or depress starter button Ë .
Repeat if necessary with choke in RUN position and
throttle control in FAST position. When engine starts,
operate in FAST position.
Note: If equipment manufacturer has supplied battery,
charge it before trying to start engine, as equipment
manufacturer recommends.
Note: Use short starting cycles (15 secs. per min.) to
prolong starter life. Extended cranking can damage
starter motor.
Stopping
(see fig.

)
Do not move choke control to CHOKE position to stop
engine. Backfire or engine damage may occur. Move
throttle control to IDLE or SLOW position Ê , if
equipped. Then turn key to OFF or move stop control to
OFF position Ë . Close fuel shutĆoff valve Ì .
Note: Always remove key from switch when equipment
is not in use or left unattended.
Note: When engine is transported, close fuel shutĆoff
valve to prevent leakage.
Adjustments
(see fig. 
)
To prevent acciĆ
dental starting, reĆ
move spark plug
wire Ê and ground
it before adjusting, and disconnect battery at negative
terminal, if equipped.
Throttle control adjustments (see fig.

)
Manual friction control
Loosen or tighten wing nut
Ë on control plate until
throttle control Ì moves with some resistance and still
remains in desired position when engine is running.
Remote control
Loosen casing clamp screw
Í . Move casing and wire Î
in direction of arrow to end of travel. Move throttle
control to FAST position. Tighten casing clamp screw.
Fixed governor control
Top speed adjusting screw
Ï has been preĆset at the
factory as specified by equipment manufacturer. DO
NOT ADJUST. If adjustment is required, consult any
Briggs & Stratton Authorized Service Dealer.
Carburetor adjustment
The manufacturer of the equipment on which
this engine is installed specifies top speed at
which the engine will be operated. DO NOT
EXCEED this speed.
See an Authorized Briggs & Stratton Dealer for
carburetor adjustment.
Start engine and warm up approximately 5 minutes
before adjusting. With engine running, place throttle
control in SLOW position. Rotate carburetor throttle
lever against the idle speed screw and hold it. Turn idle
speed screw to obtain 1750 rpm.
Rotate idle mixture valve full travel clockwise and then
counterclockwise. Finally, position idle mixture valve in
middle of travel. Check idle speed and reĆadjust to
1750 rpm, if necessary.
Move throttle control to FAST position. Engine should
accelerate smoothly. If it does not, adjust idle mixture
valve counterclockwise 1/8 turn.
CARBURETOR
THROTTLE
LEVER
IDLE
SPEED
SCREW
IDLE MIXTURE
VALVE
WITH LIMITER