10 TS 700, TS 800
4.3 Ignition system
Important:
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 boot firmly onto spark plug 
and fit new spring if necessary
Spark plug sooted, smeared with oil Clean the spark plug or replace if 
necessary
Incorrect air gap between ignition 
module and flywheel
Set air gap correctly
Flywheel cracked or has other 
damage or pole shoes have turned 
blue
Install new flywheel
Ignition timing wrong, flywheel out 
of adjustment, key in flywheel has 
sheared off
Install new flywheel
Weak magnetization in flywheel - 
pole shoes have turned "blue"
Install new flywheel
Irregular spark Check operation of master control 
lever and ignition module
Faulty insulation on ignition lead or 
short circuit wire.  Use ohmmeter to 
check ignition lead for break.  If 
break is detected or high resistance 
measured, fit a new ignition lead
Check operation of spark plug
Clean the spark plug or replace if 
necessary
Crankcase damaged (cracks) Replace crankcase