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5 Troubleshooting
5 Troubleshooting
Problem Cause Solution
Blows poorly Obstructed spark-arrest screen Clean the spark-arrest screen
according to
Dismantling the exhaust
system on page 23.
Water in the resonance tube Clean the drain hose and nipple as
shown in
Cleaning the drain hose on
page 37.
Exhaust port blocked Place the piston in the upper posi-
tion. Clean the exhaust port using a
chisel. Blow clean.
Adjustment of the carburettor setting Adjust the carburettor according to
Basic carburettor settings on
page 22.
Motor turns unevenly Obstructed spark-arrest screen Clean the spark-arrest screen
according to
Dismantling the exhaust
system on page 23.
Adjustment of the carburettor setting Adjust the carburettor according to
Basic carburettor settings on
page 22.
Obstructed air filter Clean the air filter according to
Dis-
mantling the air filter on page 20.
Spark plug needs cleaning Clean the spark plug with a wire
brush.
Air column in the ignition module Adjust the air column according to
Assembling the ignition module on
page 25.
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