Specifications

51
Use the table above to order adjustment washers. Replace the stock washer with
the proper combination of adjustment washers that delivers the desired clutch hit.
CAUTION:
It is easy to prematurely damage the clutch and other engine components with
improper clutch adjustment. If you are unsure of how to adjust the clutch, contact
the Cobra Technical Support Group before making adjustments.
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)