allen MSP455 - Troubleshooting

052793 - 03/2013
SECTION 3
SERVICE
Page 3-8
Troubleshooting
Area Malfunction
Possible
Cause
Corrective
Measure
Ref.
Engine
Engine does not start,
or is di󰀩cult to start
Battery is discharged - Add battery uid
- Charge the battery
- Replace the battery
Battery cable is disconnected - Connect battery cable
Blown fuse - Replace fuse
Bad connection or breakage in the wiring - Contact your AEC dealer
Out of fuel - Fill fuel
Air is in fuel - Contact your AEC dealer
Engine fouled - Wait a while and try starting again
Insu󰀩cient or wrong oil - Fill or change oil
Dirty or damaged spark plug - Clean or replace spark plug
Contamination in fuel system - Contact your AEC dealer
Other (other than above) - Contact your AEC dealer
Engine stalls
Out of fuel - Fill fuel
Cold engine - Warm up the engine
Other (other than above) - Contact your AEC dealer
Engine stops abruptly
Out of fuel - Fill fuel
Piston siezure due to insu󰀩cient or bad oil - Contact your AEC dealer
Other (other than above) - Contact your AEC dealer
Engine does not stop
Electrical malfunction - Contact your AEC dealer
Other (other than above) - Contact your AEC dealer
Idling is not stable
Insu󰀩cient intake air (clogged air cleaner) - Clean or replace the air cleaner
Other (other than above) - Contact your AEC dealer
Poor power or
acceleration
Bad fuel - Change fuel
Wrong oil (improper viscosity) - Change to suitable oil
Accelerator (throttle) is not properly adjusted - Contact your AEC dealer
Insu󰀩cient intake air (clogged air cleaner) - Clean or replace the air cleaner
Excessive load - Reduce load
Loose drive belt - Adjust
Other (other than above) - Contact your AEC dealer
Irregular noise or
vibration from or around
the engine
- Contact your AEC dealer
Excessive oil
consumption
- Contact your AEC dealer
Engine overheats
Insu󰀩cient amount of engine oil - Fill oil
Cooling fan is clogged or blocked - Clean
Other (other than above) - Contact your AEC dealer
Excessive fuel
consumption
Clogged air cleaner - Clean or replace air cleaner
Other (other than above) - Contact your AEC dealer