Ignition.pdf

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IGNITION
WARNING: TO PREVENT
accidental starting, the spark plug wire must be removed from spark plug and grounded,
failure to do so can cause personal injury.
WARNING: DO NOT
remove spark plug when checking ignition. A fire or explosion may occur.
WARNING: FLYWHEEL KICKBACK
can occur if the flywheel key is sheared and bodily injury may occur.
Copyright
©
1999 by Briggs and Stratton Corporation
Intek
TM
Single Cylinder OHV Engine Repair Manual
Version 1.0
IGNITION
Ignition Armature
Copyright
©
1999 by Briggs and Stratton Corporation
Intek
TM
Single Cylinder OHV Engine Repair Manual
Version 1.0
IGNITION
Ignition Armature
Check Ignition
Check Ignition, All Models
1. Connect spark plug wire to long terminal of Spark
Tester, Tool
#19051
or
#19368
and ground tester to
engine with alligator clip, Fig. 1.
2. Operate starter and observe spark gap in tester.
If spark jumps tester gap, ignition is good.
Note: Flywheel must
rotate at 350 RPM, minimum.
Note: On all
engines equipped with MAGNETRON®,
spark will also be observed at the tester when
there is a sheared flywheel key.
Fig. 1 - Check For Spark
Check For Spark Miss
1. Install Tool
#19051
or
#19368,
Spark Tester, in series
with spark plug lead and spark plug, Fig. 2.
2. Start and run engine.
3. If spark jumps tester gap regularly, but miss
continues, problem is spark plug, compression, or fuel
system.
Fig. 2 - Running Check
Copyright
©
1999 by Briggs and Stratton Corporation
Intek
TM
Single Cylinder OHV Engine Repair Manual
Version 1.0
IGNITION
Ignition Armature
Remove Armature
Remove Ignition Armature
1.
Remove blower housing.
Note: On Models
110400, 111400, 113400,
120400, 121400, 123400 remove air cleaner
cover and control panel before removing blower
housing.
2. Remove armature screws, disconnect stop wire, and
lift off armature, Fig. 4.
Fig. 4 - Remove Ignition Armature, Typical
Copyright
©
1999 by Briggs and Stratton Corporation
Intek
TM
Single Cylinder OHV Engine Repair Manual
Version 1.0
IGNITION
Ignition Armature
Install Magnetron® Ignition Armature - All Models
1.
Install stop switch wire on armature.
2. Turn flywheel so magnet is away from armature.
3. Install armature and mounting screws, Fig. 12.
Note: Mounting holes
in armature are slotted.
4. Push armature away from flywheel as far as
possible and tighten one screw to hold armature
in place.
Fig. 12 - Install Armature, Typical
Copyright
©
1999 by Briggs and Stratton Corporation
Intek
TM
Single Cylinder OHV Engine Repair Manual
Version 1.0

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