2006 Ski Doo REV Service Shop Manual, Page 196Get this manual
Section 04 FUEL SYSTEM Subsection 02 (CARBURETORS, THROTTLE AND CHOKE CABLES)
ENGINE 377 engine 552 engine except in Summit 552 engine in Summit
THROTTLE SLIDE HEIGHT (drill bit size) 0.1 mm.004 in) 1.7 (.067) 1.6 (.063) 1.9 (.075)
CAUTION: The rubber intake adapter must be checked for cracks andor damageAt assembly, the intake adapater must be perfectly matched with carburetor and engine otherwise severe engine damage will occur
Carburetor Synchronization
When depressing throttle lever, both carburetor slides must start to open at same timeUnlock cable adjustment lock nut on one carburetorScrew or unscrew cable adjuster until all carburetor slides start to open at same timeCable play will be identical on all carburetorsRetighten jam nut
A01C3NA