The Reaper is a centrifugal disc clutch designed to mount on a ¾” crankshaft or jackshaft for race karts with engines up to 20hp. This manual will help you gain maximum performance as well as longevity of the components. This is a racing clutch and should not be used in any application other than kart racing. Aluminum drum is for use in stock and super stock classes. Steel drum is required on jackshaft mounting for 2 stroke racing and in limited and limited mod classes in 4 stroke racing. The Reaper clutch features Cryogenic treatment to all critical components for superior performance, cooling, and longevity.

Installation
When space allows it is better to mount the clutch inboard (sprocket facing engine) because spring adjustment can be accomplished without removing the clutch. Mounting the clutch outboard requires the optional spacer kit p/n 490045 for proper clearance between the levers and the side of the engine.

Steps for inboard installation
1. apply a thin coat of anti-seize grease to the crankshaft
2. slide spacer (item 1) onto crankshaft …the spacer provides proper clearance between the chain and the side cover of the engine
3. insert key (item 26) into keyway of clutch … key must slide freely into keyway … file any nicks or burrs from crankshaft or keyway in clutch if necessary.
4. slide clutch onto crankshaft … be sure to align keyway in crank with key in clutch
5. install stepped washer (item 27), lock washer(item 28), and bolt(item 29) tighten to 150 in lbs optional Spanner Wrench (p/n 490044) is available to hold clutch in place during tightening process… the Spanner Wrench also comes in handy when disassembling the clutch during maintenance.

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