Stiga TRE 0702 - Page 55

Release 00 - 03/2018
Engine TRE 0701-TRE 0702-TRE 0801
pag. 55
Service manual
14. TROUBLESHOOTING
PROBLEM CAUSE SOLUTION
The engine starts but does
not run
Fouling in the combustion chamber
Dismount the cylinder head and re-
move fouling [
10.3]
Insufcient pressure
Check tightness of cylinder head
screws, replace washer if necessary.
Check wear and tear of the piston
rings [
10.4]
Theengineisinefcientor
the runs irregularly
The throttle cable is not well adju-
sted
Check and/or adjust the throttle ca-
ble [
8.1]
The governor malfunctions or there is
a problem with the rods
Check the entire governor system
[
8.]
Insufcient pressure
Check tightness of the screws of the
cylinder head and replace washer if
necessary. Check wear and tear of
piston rings [
10.4]
Carburettor dirty or air seeps into the
carburettor
Check and clean the carburettor.
Replace the carburettor gaskets
[
7.1]
The coil air gap has been poorly
adjusted
Adjust the air gap [
9.2] and if
the problem persists, replace the coil
[ 9.3]
Oxidation or loosening of spark plug
connections
Perform spark test [
9.1] or repla-
ce spark plug
The engine overreved
Governor blocked due to breakage
of centrifugal assembly or breakage
of external governor springs.It is pos-
sible that the governor is dirty.
Check the entire governor system
[
8. and 11.]
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 [
11.4]
The engine does not turn off
The earth cable is disconnected or
broken
Check earthing connection
[
9.1]
The engine uses a lot of oil
Defective breather valve operation
Check and/or replace the breather
valve [
10.6]
Poor piston ring seal
Replace the rings [
11.3]
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