1) Sprag Clutch Removal - Rotax 912 Series Maintenance Manual

To determine wear, check the axial clearance of the sprag clutch housing. It should
be dimension 0 in para 15. At no or too little axial clearance the sprag clutch may not
disengage and the electric starter will be dam-
aged.
Remove hex. nut R M34x1,5 with socket
wrench 46 a/f, part no. 877 450, from crank-
shaft.
NOTE:
14.2.1)
Effectivity: 912 Series
AIRCRAFT ENGINES
MAINTENANCE MANUAL II
The hex. nut R has left
hand threads!
1
2
Sprag clutch removal
See fig. 119.
Insert protection piece, part no. 877 410, into crankshaft and remove sprag
clutch housing T with puller 877 375 from crankshaft. The freewheel gear
Y, the timing gear placed behind, the pump gear I pressed onto the
camshaft and the timing gear O underneath can be removed only after
splitting the crankcase.
Drive of mechanical rev. counter via worm gear U pressed into camshaft.
9
1
3
3
0
7
8
2
fig. 118
00235
6
00236
4
5
6
fig. 119
page 83
Initial issue, Jan. 01/2002