1986 Ski-Doo Factory Shop Manual, Page 279Get this manual
Section 03 TRANSMISSION Sub-section 03 (DRIVE PULLEY)
Position (not numbered)
1018003016
Each number modify maximum engine RPM by about 200 RPM number represent the factory set-up, so that lower numbers decrease engine RPM in steps of 200 RPM and upper numbers increase it in steps of 200 RPM,
EXAMPLE:
Calibration screw is set at position and is changed to position 6So engine RPM is increased of 400 RPM,
To adjust: