Cobra CX50 2014 5R King, Owner'S Manual

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Clutch shoe wear:

This can be measured by the overall diameter of the shoes installed on the arbor.
This measurement should be greater than 80.5mm

If the clutch has been slipping and shows signs of glazing, it is best to replace the
shoes. We have found that once the shoes are glazed, even if deglazed with emery
paper or a file, the performance is reduced.

The best way to prevent glazing is by not gearing too high, changing the oil as
specified and by not blipping the throttle. Every time you blip the throttle, you are
working your clutch springs.
Clutch basket wear:

The internal diameter of a new clutch basket should measure ˜84.10mm. Over time
the clutch shoes will wear the internal surface down creating a bigger ID and causing
a later engagement. The maximum ID we recommend to allow is 84.25mm.
CAUTION:
The clutch produces a tremendous amount of heat and when a rider is blipping the
throttle. This makes the clutch and clutch springs wear out quicker. This also makes
your engine tend to run hotter which decreases engine power. It is important to train
your rider
NOT to be a throttle 'blipper' .
CAUTION:
Sludge build-up between the spring washers also keeps the clutch shoe from
engaging fully and this will cause the clutch to start to slip. So you will need to clean the
sludge out or just replace the spring washers and bolts with new ones. How quickly this
sludge builds up depends on how often you
change your oil and whether your rider is
a throttle ‘blipper’.
CLUTCH ASSEMBLY:
1. Start with a new set of pre- assembled washer stacks or a cleaned, reassembled
set of washer stacks and bolts.
CAUTION:
It is also important that all three shoes are stacked the same. (See figure 32)
2. Clean the threads of the stack bolt and the clutch with brake cleaner removing all
old thread locking material.
3. Assemble the stacks and shoes on the arbor using high strength thread lock
material to the stack bolt and tighten to 12 ft-lb (16 N-m).
CAUTION:
Avoid allowing excess thread lock material to contact the spring washers and the clutch
or the clutch is likely to malfunction.
4. Clean the threads of the crank shaft and the clutch nut.
5. Install the clutch arbor on the crank. Making sure that the backing spacer in place
on the crank.