page 50
Release 00 - 03/2018
Engine TRE 352
Service manual
14. TROUBLESHOOTING
PROBLEM
CAUSE
SOLUTION
The engine does not start or
starts badly
No power supply to battery
Check alternator charge
Starting motor short circuit (burnt rotor
and stator)
Replace starting motor
No earth
Check electrical cabling of earth wire
Earth wire is flattened
The coil is faulty and does not supply
current or the air gap is too large.
Check coil
[
Carburettor dirty
Check and clean the carburettor
Poor seal of carburettor needle valve
Clean the carburettor housing and
needle valve
or replace
the carburettor
Choke blocked
Check and clean the carburettor
and the choke
The spark plug is badly connected
or faulty
Check spark
or replace
spark plug
Blocked air filter
Execute the filter cleaning
Fouling in the combustion chamber Dismount the cylinder head and re-
move fouling
Insufficient pressure
Check tightness of cylinder head
screws, replace washer if necessary.
Check wear and tear of the piston
The engine starts but does
not run
The tank cap has a clogged breather
pipe
Clean and/or replace the cap
Fouling in the combustion chamber Dismount the cylinder head and re-
move fouling
Insufficient pressure
Check tightness of cylinder head
screws, replace washer if necessary.
Check wear and tear of the piston
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