Troubleshooting - Briggs & Stratton 120000 Operator's Manual

Troubleshooting

PROBLEM
Engine will not start g
Engine difficult to start g
or
Engine runs erratically Engine runs erratically
or or
Engine will not run Engine will not run
at full speed
Engine smokes excessively
Excessive vibration
en
CAUSE
Out of fuel
Carburetor flooded
Low oil
Oil level is above FULL mark on
dipstick
Fouled spark plug
Stale fuel
Dirt in fuel tank
Carburetor out of adjustment
Dirty air filter
Fouled spark plug
Oil level is above FULL mark on
dipstick
Dirty air filter
Fouled spark plug
Loose parts on engine or
equipment
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CORRECTION
Add clean fresh fuel.
Move the throttle control lever (if equipped) to the FAST
position. Then follow the starting procedure until the
engine starts.
Check oil level. Add to FULL mark on dipstick.
Drain excess oil from engine to bring oil level to FULL
mark on dipstick.
Clean and set spark plug gap. If the spark plug
electrode is burned or worn, replace the spark plug.
Drain fuel tank. Fill with fresh fuel.
Drain and clean fuel tank. Fill with fresh fuel.
Contact an Authorized Briggs & Stratton service dealer.
Clean or replace air filter.
Clean and set spark plug gap. If the spark plug
electrode is burned or worn, replace the spark plug.
Drain excess oil from engine to bring oil level to FULL
mark on dipstick.
Clean or replace the air filter.
Clean and set spark plug gap. If the spark plug
electrode is burned or worn, replace the spark plug.
Stop engine immediately. Tighten all fasteners. If
vibration continues, take the unit to an Authorized
Briggs & Stratton service dealer.
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