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Group 21 Engine Body
134
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Replace the crankshaft gear
Remove the Gear
Use a gear puller to remove the gear from the crank-
shaft.
NOTE! Do not remove the gear by hitting it with a
hammer.
Install the Gear
1. Before installing the crankshaft gear, measure
the inside diameter of the crankshaft gear. to be
sure that the fit is within the specified value.
Front side .................. 0.106–0.171 mm [0.00417–0.00673 in]
Rear side ................... 0.274–0.358 mm [0.01079–0.01409 in]
2. Heat the gear to the range 180 to 200 °C
[356 to 392 °F. (Do not heat the gear above 200
°C [392 °F].)
3. Drive the rear crankshaft gear onto the crank-
shaft by tapping the end face of the gear lightly
with a copper hammer. Be sure the crankshaft
dowel pin enters the notch in the gear.
IMPORTANT! Install the gear to the crankshaft
until it contacts the collar.
IMPORTANT! Do not mistake the direction of
gear installation
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