COMMON TROUBLES AND SOLUTIONS
Trouble type
Possible reason
Recovery action
Starter components are faulty
Repair or replace
Starter will not
operate
Shift level is not in neutral
Shift to neutral
Fuel tank is empty
Fuel is contaminated or stale
Fill tank with clean, fresh fuel
Fuel filter clogged
Replace fuel filter
Fuel pump has malfunctioned
Repair or replace
Air vent screw not loosened
Loosen air vent screw
Spark plug(s) fouled or of incorrect type.
Inspect spark plug(s). Clean or replace
with recommended type
Spark plug cap(s) fitted incorrectly
Check and re-fit cap(s)
Ignition wiring damaged or poorly
connected
Check wires for wear or breaks. Tighten all
loose connections. Replace worn or broken
wires
Ignition parts are faulty
Replace
Engine stop switch lanyard is not
attached
Attach lanyard
Engine will not
start (starter
operates)
Engine inner parts are damaged
Repair
Spark plug(s) fouled or of incorrect type.
Inspect spark plug(s). Clean or replace
with recommended type
Fuel system is obstructed
Check for pinched or kinked fuel line or other
obstructions in fuel system
Fuel is contaminated or stale
Fill tank with clean, fresh fuel
Fuel filter clogged
Replace with recommended type
Spark plug gap is incorrect
Inspect and adjust as specified
Ignition wiring damaged or poorly
connected
Check wires for wear or breaks. Tighten all
loose connections. Replace worn or broken
wires
Specified engine oil is not being used
Check and replace oil as specified
Thermostat is faulty or clogged
Replace
Carburetor adjustments are incorrect
Replace
Fuel pump is damaged
Replace
Air vent screw on fuel tank is closed
Loosen air vent screw
Fuel joint connection is incorrect
Connect correctly
Choke knob is pulled out
Return to home position
Engine idles
irregularly or
stalls
Motor angle is too high
Return to normal operating position
86
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