Locking The Crankshaft - Rotax 914 Series Maintenance Manual

2.8)

Locking the crankshaft

See Fig. 14 and 15.
Remove the plug screw (1) M8 x 20 and sealing ring from the crankcase half
(cyl.2/4). Turn crankshaft/propeller shaft until the pistons of cyl. no. 1 and no.
2 are in T.D.C position. and lock crankshaft in this position with the crankshaft
locking screw (2) part no. 240880.
◆ NOTE
To facilitate finding of the correct crankshaft position, turn the crankshaft to have
the 4-digit number (3) cast in the fly wheel hub (4) align with the edge (5) of the
ignition housing.
The required recess position of the crankshaft can be additionally verified by
looking through the crankcase recess (6) with a flash light.
Screw the crankshaft locking pin into the crankcase. While doing so, move the
crankshaft to and fro slightly with the ring spanner until the locking screw
engages in the recess (6) of the crankshaft, and tighten to 10 Nm (88.48 in.lb).
After completion of work/check:
Remove the crankshaft locking screw (2) and refit crankshaft plug screw
M8 x 20 (1) along with a new sealing ring with a torque of 15 Nm (133 in.lb).
To check, use wrench SW 24 to rotate the crankshaft at hex. screw (7) on the
magneto side.
2
1
Effectivity: 914 Series
Edition 1 / Rev. 0
BRP-Rotax
MAINTENANCE MANUAL
The crankshaft locking screw is part of the standard tool kit
supplied with each engine.
6
04625
Fig. 14
5
00344
Fig. 15
12-00-00
4
3
5
page 13
May. 01/07