VI Crankshaft does not rotate when pedalling with
pulled starting handle.
— Slipping
V-belt
— Bended starter leaf spring
— Worn clutch plate.
VII Bad or jerky acceleration of the moped.
— Clutch clearance too small caused by blisters on
clutch plate
— Undulated pressure plate and/or endplate
VII At top speed too many vibrations as a result of
so called four-stroking.
— Too large jet
— Stopped up air filter
— Partly closed choke valve.
IX Bad acceleration and bad climbing power.
— carbonized exhaust silencer
— carbonized exhaust port in cylinder.
X Starting the engine is impossible because crank-
shaft will not rotate.
seized piston caused by: too littel oil in the mixture
too small jet
dirt in cylinder as a result of
riding without intake tube or
with shortened intake tube
dirty air filter
riding without dirt shield
— Too small piston clearance
— Bending of the piston rod.
10.76
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