5
9926806 R03 - 2015 - 2016 RANGER ETX / 570 2-SEAT 2015 - 2016 RANGER 570 CREW Service Manual
© Copyright Polaris Industries Inc.
5.5
OVERHEATING / DIAGNOSIS
During routine maintenance, or whenever PVT system overheating is evident, it’s important to check the inlet and
outlet ducting for obstructions. Obstructions to air flow through the ducts will significantly increase PVT system
operating temperatures. The vehicle should be operated in Low when plowing or pulling heavy loads, or if extended
low speed operation is anticipated.
CLUTCH DRIVE BELT & COVER RELATED ISSUES: DIAGNOSIS
POSSIBLE CAUSES SOLUTIONS / WHAT TO DO
Loading the vehicle into a truck or tall trailer
when in high range.
Shift transmission to Low during loading of the vehicle to prevent
belt burning.
Starting out going up a steep incline from a
stopped position.
When starting out on an incline, shift the transmission to Low.
Driving at low RPM or low ground speed (at
approximately 3-7 MPH).
Drive at higher speed or use Low. The use of Low is highly
recommended for cooler PVT operating temperatures and longer
component life.
Insufficient engine warm-up when exposed to
low ambient temperatures.
Warm engine at least 5 min., then with transmission in neutral,
advance throttle to approx. 1/8 throttle in short bursts, 5 to 7
times. The belt will become more flexible and prevent belt
burning.
Slow and easy clutch engagement. Fast, effective use of the throttle for efficient engagement.
Towing/Pushing at low RPM/low ground speed. Use Low only.
Plowing snow, dirt, etc./utility use. Use Low only.
Stuck in mud or snow.
Shift the transmission to Low, carefully use fast, aggressive
throttle application to engage clutch. WARNING: Excessive
throttle may cause loss of control and vehicle overturn.
Climbing over large objects from a stopped
position.
Shift the transmission to Low, carefully use fast, aggressive, brief
throttle application to engage clutch. WARNING: Excessive
throttle may cause loss of control and vehicle overturn.
Belt slippage from water or snow ingestion into
the PVT system.
Shift the transmission to neutral. Using the throttle, vary the
engine rpm from idle to full throttle. Repeat several times as
required. During this procedure, the throttle should not be held at
the full position for more than 10 seconds. Clutch seals should be
inspected for damage if repeated leaking occurs.
Clutch malfunction.
For inspection of clutch components, please contact your Polaris
dealer. Shift transmission to Low during loading of the vehicle to
prevent belt burning.
Poor engine performance.
Fouled plugs, foreign material in gas tank, fuel lines, or
carburetor. Contact you dealer for further service information.
GENERAL RANGE OPERATION GUIDELINES:
Low: Heavy pulling, basic operational speeds less than 7 MPH,
riding through rough terrain (swamps, mountains, ect.), low
ground speeds.
High: High ground speeds, speeds above 7 MPH.
OPERATING IN LOW GEAR
Low gear is the primary driving gear range. Low should
be used in ALL driving applications except for driving on
hard packed level surfaces with light loads. In this cir-
cumstance, High range may be used.
NOTE
Using High range for heavy loads, hilly terrain, or in wet,
muddy conditions will increase the chance of drive belt
burning.
PVT SYSTEM
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