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3.6.1)
Effectivity 912/914 Series
Edition 1 / Rev. 2
BRP-Rotax
Maintenance Manual
Sprag clutch removal
See Fig. 72-11.
Lock the crankshaft. See the latest issue Maintenance Manual (Line
Maintenance) for the respective engine type, 912 Series or 914 Series.
Pull out the intermediate gear shaft (1) and remove the intermediate
starter gear (2) with the thrust washers 12.5/21.5/1 (3) on both sides
of the intermediate gear.
■ CAUTION :
Use of impact wrench is not permitted, lock nut (4) must
be heated.
Use a hot air gun to heat up hex. nut (4) M34x1.5 to about 100 to
120 °C (212 to 248 °F). Unscrew the hex. nut (4) M34x1.5 from the
crankshaft using socket wrench a/f 46, part no. 877450.
◆ NOTE:
The hex. nut (4) has a lefthanded thread!
Insert protection piece, part no. 877410, into the crankshaft and remove
the sprag clutch housing (5) from the crankshaft with puller, part no.
877375.
The free wheel gear (6), the pump gear (10) pressed onto the camshaft
and the timing gear (8) underneath it can be removed only after splitting
the crankcase.
◆ NOTE:
The mechanical rev counter is driven via the worm gear
(7) pressed into the camshaft.
◆ NOTE:
The worm gear (7) is optional on newer engine ver-
sions.
Fig. 72-11
9
1
3
7
8
10
2
4
5
00236
6
72-00-00
page 16
July 01/2008
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