BRP Ski-Doo 1200 4-TEC 2018, Operator'S Manual

Page: 133 / 211

MAINTENANCE PROCEDURES
If the vehicle creeps, lower the drive
belt height from the preliminary set-
ting. Repeat procedure until creeping
stops.
Reverse Activation
NOTE:
The reverse may not activate if
the belt is positioned too high in the
driven pulley. If reverse activation
does not work properly, ensure the
drive belt is properly adjusted. Adjust
the drive belt lower in the driven pulley
if needed.
Drive Pulley (E-TEC)
Drive Pulley Adjustment
WARNING
Remove tether cord cap from en-
gine cut-off switch before perform-
ing any adjustment. Vehicle must
be parked in a safe place, away
from the trail.
The drive pulley is factory calibrated to
transmit maximum engine power at a
predefined RPM. Factors such as am-
bient temperature, altitude or surface
condition may vary this critical engine
RPM thus affecting snowmobile effi-
ciency.
This adjustable drive pulley allows set-
ting maximum engine RPM to maintain
maximum power.
Calibration screws should be adjusted
so that actual maximum engine RPM
matches the maximum horsepower
RPM.
ENGINE
MAXIMUM
HORSEPOWER
RPM
600 HO E-TEC 8100 RPM (± 100)
800R E-TEC 7900 RPM (± 100)
1200 4-TEC 7800 RPM (± 100)
NOTE:
Use precision digital tachome-
ter for engine RPM adjustment.
NOTE:
The adjustment has an effect
on high RPM only.
There are 6 positions numbered 1 to 6.
The calibration screws have 6 different
settings identified by numbers scribed
on their head.
The actual setting is the screw head
number aligned with the mark on the
pulley.
mmo2011-002-101_a
PULLEY SETTING
1. Mark
2. Number
Each position modifies maximum en-
gine RPM by about 200 RPM.
Lower position numbers decrease en-
gine RPM in steps of 200 RPM and
higher position numbers increase it in
steps of 200 RPM.
Example:
Calibration screws initially set at posi-
tion 4 and changed to position 6 will
increase maximum engine RPM by
400 RPM.
Procedure
Loosen the lock nut just enough to get
the calibration screw head out of the
pulley and rotate to the desired posi-
tion. Do not completely remove the
lock nut.
Set all 3 calibration screws to the same
position.
Tighten lock nuts to 10 N•m ± 2 N•m
(89 lbf•
in ± 18 lbf• in ).
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