Thank
you for your purchase of the best Sportsman clutch on the market, The Red Devil !
Assembly
·
Check the engine's
crankshaft for smoothness and cleanliness. Remove all dirt, rust and burrs.
·
Install the clutch, sprocket towards engine (unless you are
using our outboard 9-10 tooth kit), checking to make sure the clutch does not
extend over the end of the crankshaft
·
Install the hardened keyway provided with the clutch
·
Install the clutch mounting bolt
Adjustment
Clutch engagement needs to be set 200-400rpm
above peak torque for the engine. Your clutch comes preset for the class and
engine specified. Every engine has a different torque curve, so sometimes
adjustment is necessary for peak performance. If you don't know the peak torque rpm and your clutch is not
accelerating like you feel it should, set the clutch to a low rpm. Acceleration
will be lazy but you'll do no damage. Once the clutch begins to bog the engine
on acceleration, raise the engagement in ¼ to ½ turn increments (clockwise)
until the engine no longer bogs on acceleration. You have now set the clutch to
100% optimum peak torque. One of the largest issues we see are clutches with
engagement higher than peak torque which causes slippage, heat, and costly
repair. Today’s OHV engines use torque at low rpm to accelerate, use the torque
your engine has.
Break in
Clutch break in is very simple with our disc and surface design. Simply
checking the engagement by slowly accelerating the engine rpm several times,
and allowing the clutch to work while not under a load, on your new clutch is
enough to start bedding the discs.
Important things
to check for performance
Air Gap: This is the distance between the discs and clutch
pressure plate. Too little and the clutch will drag and over heat. Too much and
it will slip, hammer, chatter, and generally sound like it is destroying
itself. Air gap needs to be at lowest .030” and at max .060”
Spring height: Our clutch is unique that it
uses a progressive tall spring instead of relying on swapping various springs
out. It is adjustable from 2500rpm to 4200rpm in stock configuration. Modified
engines needing more than 4200rpm should remove the lever bolts to higher
engagement. Setting the springs is simple, if you need more stall turn them in
equally ¼ turn at a time, lower engagement turn the out equally. If you have
any questions on engagement please contact us.
Sprockets
Clutch drive sprockets are taken very seriously in the design of our
clutches. We use only SMC brand sprockets. They are heat treated,
precision machined, and cost the same as more inferior products. Sprockets
should be cleaned with brake cleaner or WD40, dried, then lubricated with High
Temp Red Bearing Grease *** We will not warranty in
any way, any clutch that is using the WMS or other cheap knock off sprockets.
Do yourself a favor and buy good drive sprockets, whether it be
from us, or another supplier. Using sprockets other than the SMC will require
different shims to properly shim the sprocket on the inner race.
Cleaning
For cleaning instructions on this, and all other disc clutches, please
visit our cleaning guide at: http://www.gofasthp.com/cleaning.html
www.GoFastHP.com