Specifications

Four Cycle Troubleshooting - continued

NOTE: Refer to Technician's Handbook, Form No. 692509 for a more detailed list.

IGNITION SYSTEM

Engine Will

Not Start

Check for Spark

Spark No Spark

Check ﬂywheel for

correct key, damaged

or sheared key

Replace spark plug

Set proper air gap on

external coil

Isolate engine from all

equipment (disconnect

wiring harness), repeat

test

Set proper point gap,

check condensor and

timing

Spark No Spark

Equipment problem,

check switches, wiring and

equipment controls

Engine problem, check

for shorts or grounds

in wiring

Test coil for

intermittent or weak

spark

Parasitic load too high Test ignition module

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