Snowmobile Polaris 800 RMK / 800 Pro-RMK / 800 RMK (2010 year). Instruction - part 26

 

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Snowmobile Polaris 800 RMK / 800 Pro-RMK / 800 RMK (2010 year). Instruction - part 26

 

 

105

TROUBLESHOOTING

Engine Troubleshooting

Unless you have experience and training in two-cycle engine repair, see 
your dealer if technical problems arise.

Problem

Probable Cause Solution

Erratic engine oper-
ating RPM during 
acceleration or load 
variations

Drive clutch binding

• SEE YOUR DEALER.

Driven clutch mal-
function

• SEE YOUR DEALER.

Harsh drive clutch 
engagement

Drive belt worn or 
too narrow

• Replace the drive belt.

Excessive belt/
sheave clearance

• SEE YOUR DEALER.

Drive belt turns over

Wrong belt for appli-
cation

• Replace the drive belt.

Clutch alignment out 
of spec

• SEE YOUR DEALER.

Engine mount bro-
ken or loose

• Inspect and replace. SEE YOUR 

DEALER.

Machine fails to 
move

Clutch jammed

• Check for twisted belt or broken 

spring. SEE YOUR DEALER.

Track jammed

• Foreign object may be caught or the 

rail slide melted to the track clips 
due to lack of lubrication.

• Track may be iced up or frozen to 

the ground. 

Chaincase sprocket 
or chain jammed or 
broken

• Chain is loose or broken or chain 

tightener is loose. SEE YOUR 
DEALER.

106

TROUBLESHOOTING

Engine Troubleshooting

Problem

Probable Cause Solution

Noise in drive 
system

Broken drive clutch 
components

• SEE YOUR DEALER.

Bearing failure/ 
chaincase, jackshaft, 
or front drive shaft

• SEE YOUR DEALER.

Drive belt surface 
flat spots

• Inspect and replace as needed.

Drive chain loose

• Inspect and adjust (or replace).

Drive chain worn, 
sprocket teeth bro-
ken

• SEE YOUR DEALER.

Poor low RPM 
performance

Worn drive belt

• Inspect and replace as needed.

Excessive belt/
sheave clearance

• SEE YOUR DEALER.

Sticky clutch

• SEE YOUR DEALER.

Poor fuel quality

• Use 87-91 octane fuel (or higher).

Engine doesn't turn

Seized engine

• SEE YOUR DEALER. Seizure is a 

result of poor lubrication, inade-
quate fuel supply, broken parts or 
improper cooling.

Hydrostatic lock 

• Fuel may have entered the crankcase 

while the vehicle was standing or 
being transported. SEE YOUR 
DEALER to correct the cause. Drain 
plug(s) are located on the lower 
crankcase for emergency draining.

107

TROUBLESHOOTING

Engine Troubleshooting

Problem

Probable Cause Solution

Engine turns but fails 
to start

Faulty ignition

• Install new spark plug(s). If engine 

still fails to start, check for spark. If 
there's no spark, SEE YOUR 
DEALER.

No fuel to engine

• Make sure the fuel valve is on.
• Make sure tank contains fuel.
• Ice may be in the fuel line, filter or 

pump. Add isopropyl alcohol to the 
fuel system.

• SEE YOUR DEALER.

Poor engine com-
pression

• This indicates a major engine prob-

lem that must be repaired before 
operating. SEE YOUR DEALER.

Engine lacks power

Fouled or defective 
spark plug(s)

• Replace the plug(s).

Fuel filter (loss of 
high RPM power)

• SEE YOUR DEALER.

Plugged fuel filter or 
tank pick-up sock

• SEE YOUR DEALER.

Incorrect clutching

• SEE YOUR DEALER.

Engine continually 
backfires

Faulty plug(s)

• Change plug(s).

Fuel System

• Dirt or ice may be in the fuel system 

(deicer should be added to non-etha-
nol fuel at all times for assurance 
against fuel line icing).

Incorrect throttle 
freeplay or faulty 
switch

• SEE YOUR DEALER.

Engine requires 
more than normal 
pulls to start

Poor fuel

• Replace with fresh winter fuel.

Not enough fuel get-
ting to engine

• SEE YOUR DEALER.

Plugged fuel filter or 
tank pick-up sock

• SEE YOUR DEALER.

108

TROUBLESHOOTING

Suspension Troubleshooting

Problem

Solution

Rear suspension 
bottoms too easily 

• Refer to the suspension adjustment and set-up information 

beginning on page 42.

• Revalve rear track shock (see your dealer).

Rides too stiff in rear

• Refer to the suspension adjustment and set-up information 

beginning on page 42.

• Check for binding suspension shafts and grease all pivot 

points.

Too much weight 
transfer when 
climbing

• Refer to the suspension adjustment and set-up information 

beginning on page 42.

Too little weight 
transfer when 
climbing

• Refer to the suspension adjustment and set-up information 

beginning on page 42.

Machine darts from 
side to side

• Check ski alignment (see page 100).
• Make sure spindles and all steering components turn freely.
• Check for excessive play in steering assembly (see your 

dealer).

• Ensure skags are straight on skis.

Front end pushes

• Check for worn skags.
• Check for binding front suspension shafts and steering 

components, grease all pivot points (elevate front of snow-
mobile).

• Increase IFS preload (if equipped) (see page 46).

Steering is heavy

• Make sure spindles and all steering components turn freely.
• Check ski alignment (see page 100).
• Check skags and skis for damage.

 

 

 

 

 

 

 

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