Changing Or Renewal Of The Chain Sprocket On The Clutch Drum - Bombardier-Rotax FR 125 MAX FR 125 Junior MAX Installation And Operator's Manual

Operating Instructions FR 125 MAX, FR 125 Junior MAX and FR 125 Mini MAX
Note: A smaller thrust washer (14) is required for the chain sprocket with 11 teeth, than
when using the chain sprocket with 12, 13 and 14 teeth.
Fit thrust washer (item 14) and hex. nut (item 15) and tighten nut to 60 Nm / 530
in.lb.
Remove locking bolt.
Fit spark plug. Tightening torque 27 Nm / 240 in.lb.

4.6. Changing or renewal of the chain sprocket on the clutch drum

The chain sprocket (item 2) is attached to the clutch drum (item 4)
with a hex. nut (item 5) and torque is transmitted by a needle pin
(item 3) (see fig. 15-1). The proper changing or renewal of the
chain sprocket is only feasible when using the appropriate fixture
(item 1, ROTAX part no. 277 362). To change or renew the chain
sprocket proceed as follows:
Note: The fixture is furnished on one side with a
centering pin for the chain sprocket with 11 teeth
(17 mm diameter) and on the other side with a
centering pin for the chain sprocket with 12, 13 and
14 teeth (19 mm diameter / 0,75 in).
Note: On the chain sprocket with 11 teeth, the plain
bearing must be pressed out first (the plain bearing
must be renewed after pressing out).
Clamp fixture (1) for the chain sprocket in a vice.
Place the clutch drum with chain sprocket
on the respective centering pin so that the clutch
drum
Remove the hex. nut (item 5) from the chain sprocket.
Clean all remains of the securing agent from the components.
Degrease the chain sprocket, the clutch hub and the hex. nut.
Place the new chain sprocket or the chain sprocket with required number of teeth
on the respective centering pin of the fixture.
Place the needle pin (3) into the relevant bore of the chain sprocket.
Apply ERGO 4052 on the contact face of the chain sprocket and on hex. nut of
clutch drum.
Note: Fit the hex. nut (item 5) such that the machined face of the nut points towards the
clutch drum.
Attach the chain sprocket with the hex. nut on the clutch drum.
Seite/page 94/108
is secured by the fixation pin.
Fig. 15-1
Ausgabe/edition 09.2003