Inspecting Fl Ywheel And Key - Yamabiko ECHO SRM-420ES Service Manual

SRM-420ES, SRM-420TES
T410S, B410S
T410TS, B410TS
3-10 Inspecting fl ywheel and key
C
D
E
IGNITION SYSTEM
1. Inspect magnetic force of flywheel using flux
meter, or screwdriver (A) as shown.
A
2. If magnetic force is weak, replace flywheel as
follows.
3. Disconnect spark plug cap and remove spark
plug.
B
4. Install piston stopper X644-000020 (B) in spark
plug hole by hand, to stop crankshaft rotation.
5. Remove nut (C) by rotating clockwise.
NOTE: Do not use power tool to remove nut (C).
Otherwise, piston damage may occur.
6. Remove starter pawls. Then set puller Y089-
000110 or Y089-000111 (D) on fl ywheel as shown.
d1
7. Tighten two nuts (d1) on puller alternately to re-
move fl ywheel.
8. Wipe off oil from taper part of crankshaft and fl y-
wheel before assembling fl ywheel.
9. Inspect woodruff key (E) for damage or shear-
ing. Replace it as required.
E
10. Install woodruff key (E) into key groove.
11. Align the woodruff key with center line of
crankshaft. Install fl ywheel and fasten fl ywheel nut
counterclockwise.
12. Reinstall starter pawls (Refer to "2-5 Replacing
starter pawl").
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