Ope
rator’s Manual ROTAX 125 MAX evo, Junior MAX evo, Mini MAX evo, Micro MAX evo
Pag
e 47/58
Edi
tion 09/2016
4.3. Ex
change of the clutch drum with chain sprocket fitted
Æ Remove spark plug connector and spark plug.
Æ Fit locking bolt (part no. 277380) right down to stop in spark plug thread.
Æ Remove hex. nut (pos. 14) and thrust washer (pos.13). See Fig. 3.
Æ Remove clutch drum (pos.7) with fitted chain sprocket.
Æ Clear thread of crankshaft and hex. nut (pos.14) from remains of bonding agent and
degrease.
Fig. 3
¿ Note: Only sprockets with the ROTAX logo are GENUINE ROTAX parts!
¿ Note: For the chain sprocket with 11 teeth, use the plain bearing (pos. 9) instead of the
needle cage (pos. 10). The plain bearing has to be pressed flush into the bore of
the chain sprocket with chamfered end leading.
If not absolutely necessary on a certain track, try not to use a chain sprocket with 11
teeth because of the heavy wear of the plain bearing (pos. 10) used only with this
sprocket.
Æ Apply grease on needle cage (pos. 9) when using a chain sprocket with 12, 13 and
14 teeth or on plain bearing (pos. 10) for chain sprocket with 11 teeth.
Æ Fit the assembled clutch drum with the selected number of teeth.
Æ Apply LOCTITE 243 on the thread of hex.nut (pos. 14).
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