1978 Polaris RXL Service Manual, Page 49Get this manual
CLUTCH TUNIN (Can' L) Drive Clutch Engagement RPM Adjust mentsTh RXL rive clutch has three (3) set screws located he movab le faceThese set screws control th po sition ing of th three shift weights in their relationship to the enter of qravitv Before the mach ine is ru n, the position of the se screws and shift weigh ts must be checked to ens ure th ey ar all equa l, Fig2Measur from he tail th shift we ights to reference po int on th movable faceAdjust th set screws so ha th di st ances fro th tail of all weights to the reference point are equalFig2, A
Clutch engagement should be as low as possible witho ut reating an engine bo g, usually approxima tely 5,5006,000 RPMWhen the engageme nt is as low as possible, th trackwill have chance tohook up" and initial accelerat ion off th starting line will be in creasedTo adju st the ngagement RPM, turn all hree set screws in or out an eq ua mo unt, Turn ing the screws in will decrease th engagemen and adjust ing he screws out will incr ease the clutch enga gement RPM, Fig2NOTE: As the set screws ar turned in, he neutral po sition of the clutch is dec reased and further adjustments may be required(See Adjust ment of Clutch Belt Neutral PositionPage 5)