Disassembly/Assembly Procedures GP Repair
wc_tx000549gb.fm 116
7.8 Replacing the Rotor
See Graphic: wc_gr003139
Removal
7.8.1 Disconnect the spark plug.
7.8.2 Remove the stator. See section Replacing Stator.
7.8.3 Prevent the engine’s flywheel from turning by wedging a wrench (a) or
like object into the fins of the fan. Then, remove the M8 screw (b) from
the end of the rotor.
7.8.4 Place a few shop towels or similar padding underneath the rotor.
These will catch the rotor if it should drop off the tapered shaft during
removal. Also, support the housing with a piece of wood or similar
material.
7.8.5 Insert into the hole in the shaft a headless M8 screw (c) (same
diameter as that removed in step 1; length: GP 2500 = 15 cm (6 in.);
GP 3800 = 16 cm (6-1/4 in.); GP 5600 = 19 cm (7-1/2 in.); GP 6600 =
21 cm (8-1/4 in.). Then, use a pusher bolt (d) to loosen the rotor (e)
from the engine shaft (f). Carefully pull the rotor from the machine.
Installation:
7.8.6 Position the rotor (e) onto the engine shaft (f).
7.8.7 Wedge the engine fins to keep the flywheel from turning.
7.8.8 Secure the rotor to the engine shaft with the long M8 screw (b).
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