21
DE
6.6. Possible errors and their solutions
Problem
Cause
Solution
Engine does not start
Electrical problem in version "E"
Main switch turned off
Turn on the main switch
Battery broken or too weak
Charge battery externally and check the state of the battery again.
Wiring damaged or loose
Check the battery cables to the starter as well as the control cables to the starting relais
Electric starter is broken
Test electric starter according to maintenance instructions
Bad fuel delivery
Too little fuel in the tank
Refuel
Wrong fuel
Drain the fuel and refuel
Fuel filter clogged
Change the fuel filter
Carburetor clogged or dirty
Clean/change the carburetor
Bad ventilation
Air filter clogged
Clean or replace the air filter
Bad timing
Wrong valve clearance
Check the valve clearance of both valves
Too little compression
Intake valve does not close properly
Check the valve clearance as well as whether the intake valve is leak-free
Piston or piston rings worn out
Send in device for repairs
Abnormal exhaust gas colour
Black smoke
Generally the motor is overloaded when it is releasing black smoke. On the one hand it can truly be caused by overload– in this case lower the load.
Note that the motor does not perform as well over temperatures over 25°c or at heights above 1.000m. Another cause is a flaw in the motor – but
here the motor is overloaded as well, for example if the air filter is broken and the motor is getting too little air and therefor has too low performance.
Air filter clogged
Clean or replace the air filter
Wrong fuel
Remove all fuel from the tank and replace it with gasoline
Too little fuel
Refuel. Check whether the carburettor is getting enough fuel.
Wrong valve clearance
Check the valve clearance of both valves
Intake valve does not close correctly
Check the valve clearance and whether the piston and the piston rings are worn or leaking
Piston or piston rings worn out
Send in the device for repairs
Blue smoke
When the motor is releasing blue smoke motor oil is being burnt. This flaw has to be treated with special care as it could destroy the entire motor.
Oil level too high
Check the oil level and if necessary drain some oil via the drain screw
Breather gasket of the crankcase broken or
wrongly adjusted
Check the breather gasket of the crankcase
Valve gaskets worn
Check the valve gasket (primarily the intake valve gasket)
Cylinder head gasket worn
Change the cylinder head gasket
White smoke
When the motor is producing white smoke there is water in the fuel system. For possible causes see below.
Surrounding temperature below 5c°
White smoke is normal during start-up when operating in cold conditions. However, the white
smoke must vanish at operating temperature.
Water in the fuel system
There is water in the tank because of condensation. This produces the white smoke. Drain the
tank and refuel.
Too little engine performance
Bad ventilation
Air filter and/or intake clogged
Clean or exchange air filter. Clean the air intake.
Bad fuel delivery
Too little fuel in the tank
Refill the tank. Check also fuel pipe.
Clogged fuel filter
Change the fuel filter
Bad timing
Wrong valve clearance
Check the valve clearance of the intake and outtake valve
Too little compression
Intake valve does not close properly
Check the valve clearance as well as the intake valve for leaks
Piston or piston rings worn
Have it checked by professionals
Wrong reading of motor
performance
Using the device above 1.000m sea level
All nominal motor measurements only apply below 1.000m sea level. Above 1.000m sea level
you must derate the motor.
Surrounding temperature above 25c°
All nominal motor measurements only apply below 25c°. Above 25c° you must derate the motor.
Restless engine because the
governor is blocked
throttle lever blocked
Check whether the throttle lever can move freely.
Speed governor wrongly adjusted
Check the setscrew for maximum speed - see 6.5.6.
Motor overheating
Oil temperature too high
Engine overload
Reduce the load
Surrounding temperature too high
Cooling lamella clogged
Clean following the maintenance instructions
Wrong oil level
Check the oil level
Wrong motor oil
Only use suitable oils abiding the specification
Piston or piston rings worn
Have it checked by professionals.
Abnormal
running
noise
Dejustage or worn out parts
Wrong valve clearance
Check the valve clearance of both valves
Piston or piston rings worn
Have it checked by professionals
piston pin bearing worn
piston rod bearing worn
