AD Boivin SH-MAN-2007, Shop Manual

Page: 145 / 251

PRIMARY TRANSMISSION SYSTEM 8-18
◆
WARNING
After 10 hours of operation, the transmission system of
the vehicle must be inspected to ensure the retaining
screw is properly torqued.
DRIVE PULLEY ADJUSTEMENT
The drive pulley is factory calibrated to transmit maximum
engine power at a predefined RPM. Factors such as ambient
temperature, altitude or surface condition may vary this critical
engine RPM thus affecting Snow Hawk efficiency.
This adjustable drive pulley allows setting maximum engine
RPM in the vehicle to maintain maximum power.
Calibration screws should be adjusted so that actual maximum
engine RPM in vehicle matches with the maximum horsepower
RPM given in TECHNICAL DATA.
●
NOTICE:
Use precision digital tachometer for engine RPM adjustment.
●
NOTICE:
The adjustment has an effect on high RPM only.
To adjust, modify ramp end position by turning calibration
screws.
19, 21, 18, Calibration Screw, Locking Nut and Governor
Cup
Calibration screw has a notch on top of its head.
Governor cup has 6 positions numbered 2 to 6. Note that in
position 1 there is no stamped number (due to its location on
casting)
1-Notch