2005 Ski-Doo Racing Handbook, Page 158Get this manual
SECTION 05ENGINE PREPARATION
Final idle speed adjustment (engine running at idle speed) should be within 12 turn of idle speed screw from preliminary adjustmentTHROTTLE SLIDE HEIGHT (drill bit size) 0.1 mm.004 in)
MX 550 FAN
A00C1TA
CENTER POST TYPE 1Throttle cable 2Needle retaining plate 3Throttle slide
MX 380 FAN Summit 550 Fan (CanUS)