Spar parts for PVP 252 Motor             Page 6         Page in PDF

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 The diameter of a new cylinder is 54.01 to 54.02  The piston is including piston pin, piston ring and C-clip Piston 3960 Replaces Piston 3965 
 
3960 Piston Di Carmine  53,96 piston pin is 24 mm. from top
 
3975 Piston Vertex  53,975, piston pin is 24 mm. from top

396 Piston Vertex  53,96, piston pin is 26 mm. from top
405 Clutch gear 58/18 1
410 Trust washer ø20/35x3.7 1
411 Inner race ø20/29x17 1
412 Needle bearing ø25/29x17 1
414 Trust washer ø20/35x1.5 1
415 Hex. nut M18x1.5 1
416 Tab washer NA20 1
420 Clutch drum 1
430 Inner pressure plate 1
435 Clutch hub 1
440 Sinterplate 3.0 5
445 Clutch plate 1.5 4