21. Clean all 11 of the clutch plates thoroughly and examine them for wear or damage. Place each plate on a flat surface, such as a piece of glass, to check for warpage. If any plate shows signs of being bent, discard it and obtain a new one.
22. Fig. 101 shows the three types of plates used in each clutch assembly. There are five clutch driving plates that each have a friction material bonded to it. There are 12 friction pads on each side of each plate. These friction pads are separated by little grooves running between them. If the pads have worn down to the point where any one of them is flush with the groove, replace it. In fact, it is good practice to replace all five of the friction plates at once.
23. There are six steel clutch driven plates, one of which is thicker than the other five. This thick plate goes in the clutch assembly first, followed by a friction plate and then a steel driven plate. Fit another friction plate, then another driven plate. Continue this alternating sequence until all of the platesare installed. The last one will be a steel driven plate.
24. Install the clutch pressure plate and slide the five spring cups through the holes in the pressure plate and down over the five studs in the inner clutch hub.
25. Measure the free length of each clutch spring. If any one of them measures less than 1.170", replace it. As with the clutch plates, it is better to replace all the clutch springs at once, thereby insuring even pressure under all conditions.
26. Put the springs into the spring cups and fit the slotted clutch spring nuts to the studs. The studs each have a hole drilled through them and the nuts have two slots across the top in order that they may be held in place with small cotter pins or safety wire once they have been adjusted properly.
27. Turn each nut inward until a slot on the nut can be aligned with a hole in the stud (approximately 11/2 to 2 turns), As shown in Fig. 102, the complete hole must be visible in the slot; otherwise a cotter pin will not fit through it.
28. Do not install the cotter pins or safety wire yet.
29. At this point, turn the engine around so that the magneto side is
facing you. You must do this to temporarily install the magneto side engine
case and clutch actuating components in