
- -
9
Make sure the CVT Gasket is installed at this time.
2.
Place the Belt inside the rear Drive Pulley by spreading the pulley with your fingers and pushing the belt
down to the bottom of the pulley.
3.
Place the Belt onto the Variator collar and place the Fixed Plate onto the Splined Shaft. Remember to
install the Star Washer on the Fixed Plate; this is what connects the Fixed Plate to the Crankshaft. Install
the Kick Starter gear and the concaved washer and install the 17mm nut.
4.
At this time make sure the belt is down in the Rear Drive Pulley and loose in the Variator Assembly, then
secure the 17mm nut with an impact gun set on the lower setting.
If this nut comes loose crankshaft
damage will occur during operation.
5.
Turn the motor over by grabbing the Fixed Plate and turning it clockwise to drive the belt back to the 1st
gear setting (Down in the Front and Up on the Rear).
6.
Reinstall the damper O-ring on the outside of the 24mm nut on the Trans Input Shaft.
7.
Reinstall the CVT cover and test ride unit for operation. (DO NOT RUN THE BIKE WITH THE CVT COVER OFF
- DAMAGE WILL OCCUR.)
Variator roller weights
Check the roller weight condition often (before each race). If the rollers are flat spotted, replace them or belt
damage will occur.
Lower the Variator weight for more stall off the line, this will decrease top speed slightly. Run lower roller weights
for shorter tracks and to increase stall speed slightly.
Clutch stall springs
Unit is shipped with Stock FRC Stall Spring set installed in a HP FRC Clutch Carrier assembly. This is approximately
3000 rpm stall with CVT as supplied. Increase the stall for more punch off line. Raising stall this way will soften the
hit of the clutch but otherwise not cost any top speed loss. Off line increase can be subtle. More stall is required
with a built engine (i.e. porting, etc.).
Drive Spring
Increased Drive Spring RPM will keep CVT in 1st gear longer resulting in much more stall off the bottom than a
roller change will provide. The Drive Spring is also responsible for downshift properties. Change this cautiously;
the Drive Spring has a large effect on stall and top speed.
Drive Belt
Check the drive belt for wear often. Measure the top width, then the bottom width when the belt is new. If either
measurement above decreases by more than 1.5mm, replace the belt. The worn belt can be kept for spares but is
not useful for racing purposes. A narrow belt will decrease the max top speed. Most 16-17mm drive belts are
compatible with this CVT system.
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