Honda Rebel 250 & 450 Forum banner
1 - 5 of 133 Posts

Registered
1986 Honda CMX 450 Rebel
Joined
122 Posts
Could be a "loose" timing-chain. It seems to vanish at higher rpm. Could also be a loose adjuster-arm of the counterbalance shaft.
 

Registered
1986 Honda CMX 450 Rebel
Joined
122 Posts
To get the valvecover off and on, it麓s nessesary to remove the ignitioncoil/CDI.unit and cableconnectors. To do that it麓s okay to remove the bracket wich holds the whole shebang. Hold it up with a rubberband or the likes.
Behind the valvecover is an bracket which holds the cylinderhead. Only the right triangle part can be removed (do that !)
All this, just gives enough space to maneuvre the Valvecover on and off. Still be careful in handling the cover and gasket..

To check and adjust camchain tension, loosen th two M6 Bolts (just loosen them don麓t screw them out !) behind the cylinder-head and cylinder. Than turn the crankshaft counterclockwise. Holding the crankshaft under light tension, the M6 Bolts can be tightened again The hexbolts are M10 for the spanner-width.
Camchain-tension should be correct know and further manual tensioning isn麓t nessesary.

good luck !
 

Registered
1986 Honda CMX 450 Rebel
Joined
122 Posts
That麓s a No Go ! Don麓t use any Force like a Hammer on the camchain-tensioner !
 
  • Like
Reactions: B40dash8

Registered
1986 Honda CMX 450 Rebel
Joined
122 Posts
It seems that the unusual play in the clutch hub is the noise you are looking for.

The central nut oft the hub should be tightened and secured again.
 
  • Like
Reactions: B40dash8

Registered
1986 Honda CMX 450 Rebel
Joined
122 Posts
At first you have to dissasamble the clutchplates ... and yes it麓s a special tool you need.

Or,you can go creative. To hold the hub you can jam an old t-shirt into the teeth of the primary-drive sprockets.
To loosen and tighten the central nut, a long and sturdy screwdriver comes handy & (this time) a medium sized hammer does the job.
Best use both, locktite.medium strength and the securing washer to make shure it麓s fastenet.

This would be the tool you need.

 
1 - 5 of 133 Posts
Top