2005 Ski-Doo Racing Handbook, Page 218Get this manual
SECTION 05ENGINE PREPARATION
Check for cracked, dried or perforated bellows no13Check if the compression springs no7 are in specificationsENGINE TYPE SPRING PN WIRE DIAmm (in) 0.9 (.035) 0.9 (.035) 0.8 (.031) 0.8 (.031) 0.8 (.031) FREE LENGTH mm (in) 48.5 (1.91) 48.5 (1.91) 42.5 (1.67) 52.5 (2.07) 42.5 (1.67)
When installing new cageless bearing, replace half plastic cages with sleeveNOTE: 593, 593 HO, 593 SDI and 793 HO engine cageless bearings have 28 needles
593 593 HO 593 HO SDI 793 HO (All models except Summit) 793 HO (All Summit)
420 239 944 420 239 944 420 239 942
Brown Brown Black
420 239 941
420 239 942