Maintenance - Briggs & Stratton 120000 Operating And Maintenance Instructions Manual

This engine is cert'med to operate on gasoline. Exhaust Emission Control System:
EM (Engine Modifications).
D not use gasoline which contains Methanol. Do not mix oil with gasoline.
O
Adding Fuel
Before refueling, allow engine to cool 2 minutes.
STARTING
CAUTION: Some engines may be equipped with Oil Gard. The Oil Gard is
intended to warn the operator that the engine is low on oil. Always check oil level
before startino. Ennine damaoe
BEFORE STARTING THE ENGINE
1. Add oil and fuel as instructed in this manual.
Turn fuel shut-off valve
4.
Move stop control 0 to ON position, if eoui~eed.
5.
Note: OIL G A ~ D light in rocker stop snitch 0,
tight will flicker and engine will not slart, or restart. Oil must be added. Fill to FULL
will not stop a running engine if the engine runs low on oil.
STARTING THE ENGINE
Rewind Startel
and pull slowly until resistance is fen. Then pull cord
rapidly to overcome compression, prevent kickback and start engine.
2. Reoeat il necessarv with choke in RUN oosiiion and throttle in FAST. When
engine faster than you can let go.
Electric StarIer
1. On enginesequipped with 12 bolt starting systems, turn key to START
position Q.
2. Repeat if necessary with 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 cydes (15 sec, per minute) to prolong starter life. Extended
cranking can damage starter motor.
STOPPING
1. Move throttle control lever to IDLE or SLOW position
2. Then move stop control to OFF position
3. Close fuel shut-off valve
CAUTION: DO NOT move choke control to CHOKE position to stop engine.
Note: Always remove key from switch when equipment is not in use or left unat-
tended.
Note: When engine is transported, close fuel shut-off valve to prevent leakage.
ON, ifequipped.
. . .
.
equipped, warns of low oil level.
WARNIN G
if equipped.
or turn key to OFF O.
D not strike the flywheel wlh hammer or hard object. If done, the flywheel
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may shatter during operation.
Change oil
Every Hours or
8
Daily
Check oil level
Clean around muffler
25
Every Hours Every Season
Change oil if operating under heavy load or high ambient temperature
Service air cleaner pre-cleaner
Hours or
Every Season
Changeoil
Clean and inspect spark arrester, if equipped
. .
or
Every Hours Every Season
Service oil foam air cleaner or cartridge*
Cleanireplace spark plug
Change gear reduction oil, if equipped
Clean cooling system*
Every Season
Check valve clearance
Clean more oHen under
Check oil level regularly.
Be sure oil level is maintained. Check every 8 hours or daily, before sta%ng
engine. See oil Wing procedure under
Changing Oil
Change oil after first hours of operation. Change oil while engine is warm. Refill
5
with new oil of recommended SAE viscosity grade. (see fig.
in
Changing Oil Gear Reduction, if equipped
Remove oil fill plug and oil level plug B. Drain oil every 1Ml 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 on lop of gear case cover.
Dual Element Air Cleaners
Replace precleaner
To service pre-cleaner, if equipped, wash in liquid detergent and water. Squeeze
dry in a clean cloth and allow to dry thoroughly. DO NOT oil pre-cleaner.
To sewice cartridge, clean by tapping gently
or
solvents
solvents will dissoive filter.
3
G
WAR N IN
.
. . .
grass.
Oil
2)
o n
a flat surface. DO NOT oil
dean. Pressurized air can damage filter: