Hi Hal,
I am going to pass a lot of information your way, and in the process many will learn what is necessary to convert a Whizzer automatic clutch to the manual [slip] version.
First I will cover the needed parts. The clutch pulley, 2 bearings [expensive], a spacer between the bearings, mounting arm [must accept clutch cable], a bolt to hold the clutch to the arm [shorter than the automatic version], bolt to hold the arm to the motor, clutch cable, clutch cable bracket, and the screws & nuts to mount clutch cable bracket to the frame. The only part that is the same is the spring.
I am also including the used belt tension kit, please note the word "used".
The drive pulleys are supposed to be the same, but I wouldn't bet on it. The 90 MM pulley on the auto clutch doesn't look the exact same size as the manual pulley, but close, meaning you will most likely need to make some adjustments to make it work correctly.
The automatic clutch version also has a brake light switch in the left lever, so when ever you pull the clutch lever the brake light will activate, unless you unplug the switch.
Both clutches mount the same way, use the same spring, and use the same belts [unless the automatic isn't the 90 MM version]. The bolt that holds the automatic clutch to the arm is reversed threads, whereas the manual clutch bolt is normal threads. Use Loctite to secure all bolts & nuts, and let the Loctite dry completely before using the clutch.
I will assure you it will be harder than you think to make it work correctly, but the tension kit will make it work a lot better. Here are some instructions for the tensioner
1. Remove belt cover.
2. Remove metal belt guide from inside the cover .
3. Drill 1/4" hole in top of belt cover.
4. Install belt chaffe guide inside belt cover.
5. Screw the 4 studs into the belt cover posts, leaving 3/4" of each stud exposed.
6. Install plate [with roller attached] over the studs, install the 2 larger nuts on the REAR studs and tighten .
7. Install the forward belt guide included with the kit over the front 2 studs and locate the thin nuts over the 2 forward studs .
8. Adjust the forward guide & the roller bearings to take the needed slack from the front belt, and tighten the nuts & bolt.
9. Install belt cover using the acorn nuts.
10. Use "blue" locktite on all studs, screws, bolts, & nuts.
11. Ride Whizzer.
I sure hope you are up to this challenge, and try to avoid using swear words whenever possible.
Tomorrow morning appears to be a good day to ship clutch parts.
Have fun,
