6
6.5
9924871 R03 - 2014 Polaris Sportsman® 570 EFI Service Manual
© Copyright 2013 Polaris Sales Inc.
Maintenance / Inspection
Under normal use the PVT system will provide years of
trouble
free
operation.
Periodic
inspection
and
maintenance is required to keep the system operating at
peak performance. The following list of items should be
inspected
and
maintained
to
ensure
maximum
performance and service life of PVT components. Refer
to the troubleshooting checklist at the end of this chapter
for more information.
1.
Belt
Inspection,
Drive
to
Driven
Clutch
Alignment, and Clutch Center Distance.
2.
Drive and Driven Clutch Buttons and Bushings,
Drive Clutch Shift Weights and Pins, Drive Clutch
Spider Rollers and Roller Pins, Drive and Driven
Clutch Springs.
3.
Sheave Faces.
Clean and inspect for wear.
4.
PVT
System
Sealing.
Refer
to
appropriate
illustrations on the following pages. The PVT system
is air cooled by fins on the drive clutch stationary
sheave. The fins create a low pressure area in the
crankcase casting, drawing air into the system
through an intake duct. The opening for this intake
duct is located at a high point on the vehicle (location
varies by model). The intake duct draws fresh air
through a vented cover. All connecting air ducts (as
well as the inner and outer covers) must be properly
sealed to ensure clean air is being used for cooling
the PVT system and also to prevent water and other
contaminants from entering the PVT area. This is
especially critical on units subjected to frequent
water fording.
PVT Break-In (Drive Belt / Clutches)
A proper break-in of the clutches and drive belt will
ensure a longer life and better performance. Break in the
clutches and drive belt by operating at slower speeds
during the 10 hour break-in period as recommended (see
Chapter
3
“Engine
Break-In
Period”
for
break-in
example). Pull only light loads. Avoid aggressive
acceleration and high speed operation during the break-
in period.
CLUTCHING
