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8. Troubleshooting
8.
Troubleshooting
Error
Cause
Remedy
Engine does not start
No fuel
►
Refill the tank
Engine switch is at “OFF”
►
Set engine switch to “ON”
Fuel tap closed
►
Open fuel tap
Choke not used when engine is
►
Move choke lever to "CLOSE" posi-
cold
tion
Carburettor jets are dirty
►
Clean carburetor
Spark plug wet / oiled up / elec-
►
Maintain spark plug, see Ch. 7.2.4
trode gap is incorrect
No ignition spark
►
Check cables and connections;
check ignition coil, replace if
necessary
Chocked fuel filter
►
Clean fuel filter
Engine flooded
►
Close fuel tap, set throttle lever to
full throttle, start engine; if nec-
essary, remove spark plug, clean
and dry it
Engine dies when idling
Idling speed is too low
►
Adjust the idling speed
Engine does not run at 3,800
Throttle lever is not at “Full
►
Set throttle lever to “Full throttle”
rpm minimum
throttle”
►
See engine manufacturer’s operat-
ing instructions for other possible
causes of faults
Engine gets hot, poor perfor-
Chocked fuel filter
►
Clean fuel filter
mance
Engine runs unevenly with poor
Chocked air filter
►
Clean air filter, see Ch. 7.2.3
performance
Engine does not develop peak
Exhaust or cylinder outlet port is
►
Remove and clean exhaust, re-
power
soiled
move carbon deposits
Incorrect or bad fuel
►
Drain fuel and refuel according to
manufacturer’s specification
Fuel filter is blocked, carburettor
►
Arrange repair or replacement of
not working, ignition problems,
component affected
valve operation blocked, etc.
Little material abraded despite
V-belt is slipping
►
Re-tension the V-belt, see Ch. 7.5
high engine speed
Engine turns but abrasive does
V-belt is torn
►
Replace V-belt, see Ch. 7.4
not
V-belt tension cannot be adjust-
V-belt is worn
►
Replace V-belt, see Ch. 7.4
ed (no more distance discs be-
tween the conical discs)
81