MAN-072
31
3.15-
TROUBLESHOOTING
Here below there are some of the most common problems, the possible causes and the
recommended solutions to solve them.
PROBLEMS
PROBABLE CAUSES
SOLUTIONS
Starter will not crank when pushing
the start button
Bad connections on starter cables
Check connections and tighten
Bad grounding
Check connections and tighten
Damaged cables
Replace them
Battery connection loose
Check and tighten connections
Battery discharged
Recharge or replace battery
Damaged starter
Check
Starter cranks but engine won't start Bad cable connections
Check that connectors are properly
connected.
Bad H.T. Coil connections or coil
failure
Check/replace
Bad H.T. coil grounding
Check grounding
Wet spark plug
Replace
Malfunction on induction system
Check status and connection on
fuel pipe
Replace mambranes and gaskets
on carburettor
Pushing the start button, the engine
starts but turns off after a short
time.
Bad harness connections
Check connectors
Bad carburettor setting (screw I)
Check carburettor retting
(see sect. 5)
The starter turns also after
releasing the start button.
Battery not sufficiently charged
(sticking of the starter relay)
Remove the positive pole of the
battery to stop the engine and
recharge the battery.
The engine stops at minimum
Bad setting of idle screw on
carburettor ( screw L)
Check carburettor retting
(see sect. 5)
The engine shows a performance
drop
Bad compression
Check piston status
Bad carburettor setting
Check carburettor retting
(see sect. 5)
Insufficient power system
Check fuel flow and inlet filter.
Blocked intake silencer
Check and clean
Burning smell, presence of smoke Clutch overheating
Check the clutch status
(see sect. 11)
Clutch engages at too high RPM
Excessive wear of the friction
material
Check the clutch status
(see sect. 11)
Too much noise coming from the
exhaust system
Damaged flexible
Check and replace if necessary
Damaged or lost springs
Damaged or lost insulating tape
Damaged exhaust pipe