1997 Ski-Doo Factory Shop Manual Volume Three, Page 59Get this manual
Sub-Section 02
Section 03 ENGINE (599, 699 AND 809 ENGINE TYPES)
RAVE System
Check valve rod housing and cylinder for clogged passages
A21C04A
1Pusher 21mm (.826 in)
RAVE System
NOTE: RAVE stands for Rotax Adjustable Variable ExhaustRemove spring clip no3, cover no4 and spring no5Remove spring no7 then unscrew valve piston no6Remove cylindrical screws no8 then valve rod housing no9Pull out exhaust valve no10A06C3OA
1Draining hole 2Passages
NOTE: Oil dripping from draining hole indicates loosen clamp or damaged bellows
17, Bellows
Check for cracked, dried or perforated bellows
5, Spring
ENGINE TYPE SPRING PN WIRE DIAmm (in) FREE LENGTH mm (in) PRELOAD IN (LBF) AT COMPRESSED LENGTH OF 14.7 mm (.579 in) 0.0100 (.00224) 0.0169 (.0038)