Page 395 - Manual Oficina Polaris Sportsman 570 2014 a 2016

PVT SYSTEM

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 Shift transmission to Low during loading of the vehicle to prevent belt
trailer when in high range. burning.
Starting out going up a steep incline When starting out on an incline, use Low, or dismount the vehicle after first
from a stopped position. applying the park brake and perform the “K” turn.
Driving at low RPM or low ground speed Drive at higher speed or use Low. The use of Low is highly recommended
(at approximately 3-7 MPH). for cooler PVToperating temperatures and longer component life.
Warm engine at least 5 min., then with transmission in neutral, advance
Insufficient warm-up of vehicles throttle to approx. 1/8 throttle in short bursts, 5 to 7 times. The belt will
exposed to low ambient temperatures.
become more flexible and prevent belt burning.
Slow and easy clutch engagement. Fast, effective use of the throttle for efficient engagement.
5
Towing/Pushing at low RPM/low ground Use Low only.
speed.
Plowing snow, dirt, etc./utility use. Use Low only.
Shift the transmission to Low, carefully use fast, aggressive throttle
*Stuck in mud or snow.
application to engage clutch.
*Climbing over large objects from a Shift the transmission to Low, carefully use fast, aggressive, brief throttle
stopped position. application to engage clutch.
Shift the transmission to neutral. Using the throttle, vary the engine rpm
from idle to full throttle. Repeat several times as required. During this
Belt slippage from water or snow procedure, the throttle should not be held at the full position for more than
ingestion into the PVTsystem.
10 seconds. Clutch seals should be inspected for damage if repeated
leaking occurs.
For inspection of clutch components, please contact your Polaris dealer.
Clutch malfunction. Shift transmission to Low during loading of the vehicle to prevent belt
burning.
Fouled plugs, foreign material in gas tank, fuel lines, or carburetor. Contact
Poor engine performance.
you dealer for further service information.
Low: Heavy pulling, basic operational speeds less than 7 MPH, riding
GENERAL RANGE OPERATION through rough terrain (swamps, mountains, ect.), low ground speeds.
GUIDELINES:
High: High ground speeds, speeds above 7 MPH.

*See Warning below.
NOTE
Using High for heavy loads, hilly terrain, or in wet,
muddy conditions will increase the chance of drive belt
burning.

WARNING
Excessive throttle may cause loss of control and vehicle
overturn.

9926803 R06 - 2014-2016 Sportsman 325 / ETX / 450 HO / 570 Service Manual 5.9
© Copyright Polaris Industries Inc.