Clutch - Cobra Moto CX50 Owner's Manual

Ignition portion of this manual.
22. Install the water pump outlet pipe (apply Hi-Temp RTV silicon gasket maker
to the threads before assembly) before installing the clutch and rotate to a
vertical position with the engine resting on bench
23. Install the CFD.
24. Install the clutch per Clutch Installation section in this manual.
25. Install the coolant drain plug with copper washer (11 ft-lb, 15 Nm).
26. Make sure that the exhaust spacer is on the cylinder (53 in-lb, 6 Nm).
27. Install the spark plug with a fresh gasket (to apply the proper torque to the
spark plug when inserting, one must first screw the spark plug in until the
metal gasket ring causes resistance and then turn another 1/8 to ¼ turn).

Clutch

New in 2011, Cobra improved the clutch washer design. The new washer stacks
have taller springs but are overall shorter and have a single thin shim.
These new washer stacks are being double sorted at the factory. They are first
sorted by measured height. Secondly, each stack with bolt is sorted by measured
engagement force.
Because of this, we have been able to widen the range of stack heights that
provide an acceptable clutch 'hit'. The stacks in each stack of three will measure
within 0.05mm (0.002").
There are many variables in an automatic centrifugal clutch. These variables are
set to world class standards from the factory but will change over time as the
components wear, relax, and just plain get used.
Please see the Tuning Clutch portion of this manual for more helpful info.
Tools recommended for clutch service:
Universal clutch puller- a universal puller that pulls the clutch, main drive gear
and rotor. (Part # MCMUTL70).
5mm T-handle
Clutch nut removal tool (ECMU0078) & piston stop (MCMUTL03).
Cobra 3 Shoe Clutch Milk (Part # MCMUGF32).
CLUTCH REMOVAL:
1. Drain the engine transmission oil and remove the clutch cover.
2. Remove the clutch nut (not left hand thread) on the end of the crankshaft with
the clutch nut removal tool.
3. Attach the Universal Puller. There are three 6mm clutch puller holes located
on the ends of the center hub. (figures 30 & 31)
48