1999 Ski-Doo Factory Shop Manual Volume Three, Page 103Get this manual
Subsection 02
Section 04 ENGINE (599, 699 AND 809 ENGINE TYPES)
RAVE System
NOTE: RAVE stands for Rotax Adjustable Variable ExhaustRemove spring clip no3, cover no6 and spring no7Remove spring or locking tie no3Unscrew valve piston no8Remove cylindrical screws no11 then valve rod housing no13Remove bellows no10 and spring no12Pull out exhaust valve no16A06C3OA
1Draining hole 2Passages
NOTE: Oil dripping from draining hole indicates loosen spring or damaged bellows
10, Bellows
Check for cracked, dried or perforated bellows
7, Spring
A06C3NA
ENGINE TYPE