Release 00 - 03/2018
Engine TRE 224
page 53
Workshop Manual
16. TROUBLESHOOTING
PROBLEM
CAUSE
SOLUTION
The engine is inefficient or
the runs irregularly
The throttle cable is not well adjusted Check and/or adjust the throttle ca-
ble
The governor malfunctions or there is
a problem with the rods
Check the entire governor system
Air seepage in the carburettor
Replace the carburettor gaskets
Carburettor dirty
Check and clean the carburettor
Insufficient pressure
Check tightness of cylinder head
screws, replace washer if necessary.
Check wear and tear of the piston
The coil air gap has been poorly
adjusted
and if
the problem persists, replace the coil
Oxidation or loosening of spark plug
connections
Perform spark test
or re-
place spark plug
AUTO-CHOKE malfunction
AUTO-CHOKE check and/or replace-
ment
The engine overreved
Governor blocked due to breakage
of centrifugal assembly or breakage
of external governor springs.
It is possible that the governor is dirty
Check the entire governor system
The engine judders
Engine screws loose
Tighten the screws
Engine timing faulty
Check wear and tear of the connec-
ting rod of the engine shaft, replace
shaft if necessary
The engine does not turn off The earth cable is disconnected or
broken
Check earthing connection
The engine uses a lot of oil
Faulty operation of the oil vent pad Check and/or replace the oil vent
pad
Low resistance of piston ring seal
Excessive gap between the guide
and the inlet valve stem
Check and/or replace the valve
Ring assembly error
Check the assembly of the rings
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