7.2 Engine problems
Fault description
Cause
Remedy
Engine does not start
Fuel tank empty
Check the fuel level, top up if necessary.
Fuel system clogged
Clean the fuel screen in the tank
Replacing the fuel filter
Clean the fuel screen in the carburettor
Fuel nozzle clogged
Clean the fuel nozzle
No ignition spark
Clean the spark plug, replace if neces-
sary
Engine oil level too low
Check the engine oil level, correct if nec-
essary
Set the engine stop
switch to position "OFF"
Set the engine stop switch to position
"ON"
Engine stop switch
defective
Replace the engine stop switch
No fuel in carburettor
Check the fuel supply
Engine does not crank when oper-
ating the recoil starter
Recoil starter defective
Replace the recoil starter
Spring broken
Replace the recoil starter
Starter rope of recoil starter does not
return to initial position
Recoil starter dirty
Clean the recoil starter
Spring broken
Replace the recoil starter
Engine stops frequently in short
intervals
Fuel system clogged
Clean the fuel screen in the tank
Replacing the fuel filter
Clean the fuel screen in the carburettor
Engine does not run with full speed
Throttle cable defective
Replacing the throttle cable
Throttle cable incor-
rectly adjusted
Adjust the throttle cable
Air filter clogged
Clean the air filter, replace if necessary
Too high engine oil level Check the engine oil level, if necessary
drain off engine oil to the "MAX" mark
(Clean the air intake manifold)
Exhaust blocked
Clean the exhaust
Engine defective
Have examined by a specialist
Carburettor defective
Have examined by a specialist
Engine runs with high speed, but no
vibration
Centrifugal clutch defec-
tive
Replacing the centrifugal clutch
Mechanical defect
Have repaired by our customer service.
Trouble shooting
BT 60 / BT 65
75
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