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9850045 R01 - 2020-2021 RANGER 1000 Service Manual
© Copyright Polaris Inc.
PVT SYSTEM DIAGNOSTICS
PVT SYSTEM TROUBLESHOOTING
SITUATION
PROBABLE CAUSE
REMEDY
Engine RPM
below specified
operating range,
although engine
is properly tuned.
Wrong or broken drive clutch spring.
Replace with recommended spring.
Drive clutch shift weight too heavy.
Install correct shift weight kit to match engine
application.
Driven clutch spring broken or installed in
wrong helix location.
Replace spring; refer to proper installation
location.
Erratic engine
operating RPM
during
acceleration or
load variations.
Drive clutch binding.
Disassemble drive clutch; inspect shift weights
for wear and free operation.
Clean and polish stationary shaft hub;
reassemble clutch without spring to determine
problem area.
Belt worn unevenly - thin / burnt spots.
Replace belt.
Driven clutch malfunction.
Replace ramp buttons.
Inspect movable sheave for excessive bushing
clearance.
Sheave face grooved.
Replace the clutch.
Engine RPM
above specified
operating range.
Incorrect drive clutch spring (too high of
rate).
Install correct recommended spring.
Drive clutch shift weights incorrect for
application (too light).
Install correct recommended shift weights.
Drive clutch binding.
Disassemble and clean clutch, inspecting shift
weights and rollers. Reassemble without the
spring and move sheaves through entire range
to further determine probable cause.
Driven clutch binding.
Disassemble, clean, and inspect driven clutch,
noting worn sheave bushing and ramp buttons
and helix spring location.
Converter sheaves greasy; belt slipage.
Clean sheaves with denatured alcohol or brake
cleaner, install new belt.
Harsh drive clutch
engagement.
Drive belt worn too narrow.
Replace belt.
Excessive belt / sheave clearance with new
belt.
Perform belt / sheave clearance adjustment with
shim washers beneath spider.
Drive belt turns
over
Wrong belt for application.
Replace with correct belt.
Belt burnt, thin
spots
Abuse (continued throttle application when
vehicle is stationary, excess load)
Caution operator to operate machine within
guidelines.
Dragging brake
Inspect brake system.
Slow, easy clutch engagement
Fast, effective use of throttle for efficient
engagement.
Summary of Contents for RANGER 1000 2020
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