13MS 650, MS 660
Condition Cause Remedy
No spark Faulty insulation or break in 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 short
circuit wire for ground contact in run
position
Check operation of spark plug.
Inspect Master Control lever,
ignition coil/lead for damaged
insulation and leakage current
Clean or replace spark plug,
replace faulty parts of ignition
system
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