Snowmobile Polaris 340 Transport Trail Touring Deluxe (2008 year). Instruction - part 29

116

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.
• Use the choke. See page 52.
• Make sure fuel tank contains fuel.
• Ice may be in fuel line, filter or 

pump. Add isopropyl alcohol to 

fuel system. On the standard 

Polaris carburetor, the choke will 

not function with the throttle 

depressed. See second item under 

Probable Cause" of Engine Contin-

ually Backfires".

Flooded engine (too 

much choke used)

• Hold throttle open, crank engine 

several times (may be necessary to 

change plug(s).

Poor engine com-

pression

• Mixture is too lean. A main jet that 

is too small will cause seizure 

resulting in loss of power. This 

indicates a major engine problem 

that must be repaired before operat-

ing. SEE YOUR DEALER.

Engine lacks power

Fouled or defective 

spark plug(s)

• Replace the plug(s).

Fuel filter (loss of 

high RPM power)

• Check fuel filter flow. Disconnect 

hose and drain 1/2 cup. Fuel flow 

should be steady and encompass 

the entire diameter of fuel line. If 

not, replace filter.

Incorrect clutching

• SEE YOUR DEALER.

Carburetor and fuel 

pump

• SEE YOUR DEALER.

Engine continually 

backfires

Faulty plug(s)

• Change plug(s).

Carburetor / Fuel 

System

• Dirt or ice may be in the fuel sys-

tem (add deicer to non-ethanol fuel 

at all times to prevent icing).

Incorrect throttle 

freeplay or faulty 

switch

• SEE YOUR DEALER.

117

TROUBLESHOOTING

EDGE 136 Suspension

Problem

Solution

Rear suspension bot-

toms too easily 

• Increase torsion spring preload
• Increase rear shock compression damping by turning 

screw clockwise

• Increase torsion spring wire diameter (see your dealer)
• Rotate RRSS to a higher position. See page 39.

Rides too stiff in rear

• Check for binding suspension shafts and grease all pivot 

points

• Decrease torsion spring preload adjustments
• Decrease rear shock compression valving by turning 

screw counterclockwise)

• Check for proper track tension
• Rotate RRSS to a lower position. See page 39.

Machine darts from 

side to side

• Make sure skis are aligned properly
• Make sure spindles and all steering components are free 

turning

• Make sure skags are straight on skis
• Check rail slide and replace if worn
• Reduce ski pressure: 

A) Increase front track spring preload
B) Reduce IFS spring preload
C) Reduce rear torsion spring preload

Front end pushes

• Check for worn skags
• Check for binding suspension shafts and grease all pivot 

points

• Increase IFS spring preload by adjusting cam or threaded 

adjuster

• Adjust RRSS to a higher position

Steering is heavy

• Check ski alignment
• Check skags and skis for damage
• Reduce ski pressure:

A) Increase front track spring preload

B) Reduce IFS spring preload by adjusting cam
C) Reduce rear torsion spring preload

• Make sure spindles and all steering components are free 

turning (elevate machine to check)

Too much weight 

transfer under acceler-

ation

• Rotate RRSS to a higher position. See page 39.

Not enough weight 

transfer under acceler-

ation

• Move RRSS to the rearward upper hole on high position. 

See page 39.

118

TROUBLESHOOTING

Drive Belt Troubleshooting

Belt Wear/Burn Diagnosis

Causes

Solutions

Driving at low RPM

• Drive at higher RPMs. Gear the machine down. Check 

belt deflection.

Insufficient warm-up

• Warm the engine at least five minutes. Take the drive 

belt off the machine in extremely cold weather and 

warm it up. Break machine loose from the snow.

Towing at low RPM

• Do not tow in deep snow. Use fast, aggressive throttle 

to engage clutch.

Riding with high RPM 

and slow speed (8000 

RPM/10 MPH)

• Lower the gear ratio. Reduce RPM. Avoid riding in 

high ambient temperatures. Check for snow ingestion.

Ice and snow build-up 

between track and tunnel

• Warm the engine at least five minutes. Take the drive 

belt off the machine in extremely cold weather and 

warm it up. Break machine loose from the snow.

Poor engine performance

• Check for carburetor and choke synchronization, 

fouled plugs, debris in the carburetor(s) and water, ice 

or dirt in the fuel tank or fuel line.

Loading machines onto 

trailers

• Skis may gouge into trailers and prevent the drivetrain 

from spinning properly. Use enough speed to drive the 

machine completely onto the trailer. Push and pull it to 

finish loading if necessary.

Clutch malfunction

• Inspect clutch components. See your dealer.

Slow, easy clutch engage-

ment

• Use fast, aggressive throttle to engage clutch.

119

WARRANTY

Service and Warranty Information

Obtaining Service and Warranty Assistance

Read and understand the service data and the Polaris warranty information con-

tained in this manual. Contact your Polaris dealer for replacement parts, service 

or warranty. Your dealer receives frequent updates on changes, modifications 

and tips on snowmobile maintenance, which may supersede information con-

tained in this manual. Your dealer is also familiar with Polaris policies and pro-

cedures and will be happy to assist you.
When contacting us about parts, service, or warranty, always provide the fol-

lowing information:
1. Serial number
2. Model number
3. Dealer name
4. Date of purchase
5. Details of trouble experienced
6. Length of time and conditions of operation
7. Previous correspondence
Use the page provided near the front of your Owner's Manual to record the 

identification numbers of your snowmobile and its engine.
Polaris Customer Service
United States: 1-763-417-8650
Canada: 1-204-925-7100