IGNITION SYSTEM
CS-501SX, CS-501SXH
501sx
19
3-10 Inspecting fl ywheel and key
1. Inspect magnetic force of flywheel using flux
meter, or bridging with flat head screwdriver as
shown.
2. If magnetic force is weak, replace flywheel as
follows.
3. Install piston stopper X644-000020 (A) or clean
rope into spark plug hole by hand, to stop crank-
shaft rotation.
NOTE:
Do not use power tool to remove nut (B).
Otherwise, piston damage may occur.
4. Remove nut (B) by rotating counterclockwise.
3-9 Setting pole shoe air gaps
1. Insert Module air gap gauge: 91004 (A) or 0.3
- 0.4 mm (0.012 - 0.016 in) thick feeler gauge be-
tween fl ywheel and ignition coil shoes.
2. Rotate fl ywheel until magnetic poles of fl ywheel
face ignition coil shoes.
3. Hold ignition coil against flywheel and tighten
the bolts to specifi ed torque (Refer to “Service in-
formation 1-3 Torque limits”). After tightening bolts,
remove Module air gap gauge: 91004 (A) (or feeler
gauge).
NOTE:
When air gap is too narrow, contact with
fl ywheel may result. When the air gap is too wide,
spark is weak.
B
A
A
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