Belt Wear / Burn Diagnostics - Polaris 2007 Two Stroke Service Manual

Belt Wear / Burn Diagnostics

POSSIBLE CAUSE
Driving at or about engagement RPM for extended periods
of time in any type of snow condition.
Cold weather startups
Towing another machine at or about engagement RPM
Spinning track while vehicle is stuck (high RPM, low
vehicle speed, high ambient temp. Example: 8000 RPM,
10mph actual vehicle speed and 60 m.p.h. indicated on
speedometer.
Ice and snow piled up between track and tunnel overnight
or after stopping for a long period of time (enough to re-
freeze the snow).
Poor running engine (Bog, Miss, Backfire, etc.)
Loading machine on trailer
Clutch malfunction
Slow, easy belt engagement - easing on the throttle
Belt Wear / Burn Diagnostics
Table 6-1:
Drive at higher RPM if possible. Gear the machine down.
Make sure belt deflection is at 1 1/4" to achieve optimum
starting ratio.
Be patient. Warm up engine at least 5 minutes or until it
readily responds to throttle input. For the quickest most
efficient drive away in extreme cold weather, take drive belt
off machine and bring it in to a warm environment. Break
skis and track loose from the snow. Engage throttle
aggressively for short durations for initial cold drive away
When possible, do not go in deep snow when towing
another machine. Use fast, effective throttle to engage the
clutch. Not all machines are intended for pulling heavy
loads or other machines.
Lower the gear ratio. Remove windage plates from driven
clutch. If possible, move to better snow conditions and
reduce RPM. Avoid riding in very high ambient
temperatures
Break loose snow and ice under tunnel. Allow longer than
normal warm-up. Allow belt to warm sufficiently and
increase grip ability on clutch sheaves. Use fast, effective
throttle when engaging clutch.
Maintain good state of tune including throttle and choke
synchronization. Check for fouled spark plug(s). Check for
foreign material in carbs. Make sure no water or ice is
present in the fuel tank, lines, or carburetors.
Use caution when loading machine. Carbide skags may
gouge into trailer and prevent drive train from spinning
freely. Use enough speed to drive completely onto trailer. If
machine cannot be driven completely onto trailer, it may
need to be pulled or pushed to avoid belt wear / burning.
Check for correct clutch components, or damage on the
clutch
Use fast, effective throttle to engage the clutch.
CLUTCHING
SOLUTION
6
6.9