Your TD43 clutch is designed to provide you with a clutch that is race ready right out of the box.
There are several new features on the TD43 that are different. Please read the following.

CLUTCH STALL SPEED

The TD43 clutch comes race prepared with one of the stall speed ranges shown in the adjacent chart.
All Tomar clutches come equipped with equally matched springs.

STALL SPEED / CLUTCH SLIP

Stall speed or clutch slip is the rpm that you see on your tachometer as you leave the pits.
Clutch slip should be adjusted so that it is just below the peak torque of the motor (50 rpm). It would be very difficult to adjust the clutch exactly on peak torque, therefore, go just a little below so that you can use the peak torque to your advantage.

When adjusting the clutch slip, 1/4 turn of the adjusting screws equal 150 rpm change of clutch slip.

TO ADJUST THE STALL SPEED WITHIN THE STALL SPEED RANGE

Rotating the adjusting screws will change the rpm within the rpm range listed above. Clockwise rotation will increase the stall speed. Counter clockwise rotation will reduce the stall speed.

If you wish to operate the clutch outside of the range shown in the illustration, you will need to add or remove weight or change the strength of the spring.