17
INSP
ADJ
HIGH ALTITUDE TUNING
HIGH ALTITUDE TUNING
To attain the best performance in high altitude conditions, carefully tune the snowmobile as outlined below.
Check STD settings
• Carburetors
• Spark plugs
Adjust the main jet size according to the
chart
Adjust the size of the main jet
Test the main jet
(performance & plug color)
Not OK
Re-test
OK
Not OK
Test the low speed setting
Adjust the engine
idle speed by
turning the stop
screw of carbure-
tor.
Check to see if the gearing is too high
or low
Adjust the engine idle speed
by turning the stop screw of
carburetor.
Try high altitude settings
Decide if the problem is with the pilot
jet and adjust accordingly
Check the engagement speed and
shift performance
Adjust the primary clutch as
required
Adjust the secondary clutch as
required
High altitude
tuning OK
OK
OK
Not OK
OK
Not OK
OK
OK
Not OK
Not OK
OK
Not OK
OK
OK
Not OK
Содержание VK10W
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