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NOTE: SPECIFICATION TABLES BEGIN ON PAGE 15 OF THIS SECTION.
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BRIGGS & STRATTON
IGNITION SYSTEM
1. Magnetron ignition, a self-contained transistor
module (2), ignition armature, (1) and flywheel (3),
Fig. 1. Inset: current style
Fig. 1
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CHECK IGNITION
WARNING
Unintentional sparking can result in
fire or electric shock.
• Use approved spark plug tester.
• DO NOT check for spark with spark plug
removed.
1. Connect spark plug wire to long terminal of Spark
Tester tool #19051 (2) or #19368 (1), and ground
tester to engine with alligator clip, Fig. 2.
2. Operate starter and observe spark gap in tester.
3. If spark jumps gap, ignition is good.
NOTE:Flywheel must rotate at 350 RPM
minimum on engines equipped with
Magnetron ignition.
If engine runs but misses during operation, a quick
check can determine if the miss is ignition or not.
Fig. 2
.008”
(0.2 mm)
.166”
(4.2 mm)
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Check For Spark Miss
1. Place Spark Tester tool #19051 (2) or 19368 (1), in
series with engine’s spark plug and spark plug
wire, Fig. 3.
2. Intermittent spark will be readily apparent when
the engine is started and run.
3. If ignition is good, check compression and fuel
system.
Fig. 3
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