11GS 461
3.5 Ignition system
Exercise extreme caution while
carrying out maintenance and
repair work on the ignition system.
The high voltages which occur can
cause serious or fatal accidents.
Problem Cause Remedy
Engine runs roughly, misfires,
temporary loss of power
Spark plug boot is loose Press spark plug boot firmly onto
spark plug and fit new torsion
spring and spark plug boot if
necessary
Spark plug sooted, smeared with oil Clean spark plug, replace if
necessary
In the event of repeated sooting,
check air filter
Ignition lead loose in ignition
module
Replace ignition lead
Fuel / oil mixture
– contains too much oil
Use a fuel mixture with the correct
mixing ratio
Incorrect air gap between ignition
module and flywheel
Set the correct air gap
Flywheel is cracked
or has other damage or pole shoes
have turned blue
Install new flywheel
Incorrect ignition timing, flywheel
out of adjustment
– woodruff key has sheared off or
groove in flywheel is worn
Replace flywheel or woodruff key
Weak magnetization in flywheel Install new flywheel
Irregular spark Check operation of switch shaft /
contact spring and ignition module
Damaged insulation on ignition lead
or interruption in ignition lead or
short circuit wire, check ignition
lead / ignition module and replace if
necessary.
Check operation of spark plug
Clean spark plug, replace if
necessary
If the engine runs roughly, this may also be due to problems in the carburetor or engine.
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