Cvt - BRP BOMBARDIER DS250 2006 Shop Manual

TRANSMISSION LEVER HARD TO SHIFT.
Symptom:
1. Check shift forks for wear and/or damages.
-
Shift fork(s) is (are) worn out and/or engagement pins are damaged. Replace shift fork(s).
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Shift fork(s) is (are) worn out and/or fork(s) is (are) damaged. Replace shift fork(s).
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Shift gear(s) is (are) worn out. Replace shift gear(s).
2. Check engine idle speed.
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Idle speed is to high (CVT starts to work). Adjust idle speed.
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Choke is in use and increases the engine RPM. Release choke.
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Choke lever is locked in down position on carburetor and/or choke cable is kinked. Replace choke
cable.

CVT

THE ATV ACCELERATES SLOWLY, ESPECIALLY WHEN IT IS STOPPED.
Symptom:
1. Check drive belt condition.
-
Belt is too narrow (drive belt engagement is higher in drive pulley). Replace belt if width is less
than specified (refer to CONTINUOUSLY VARIABLE TRANSMISSION or TECHNICAL SPECIFI-
CATIONS).
2. Check centrifugal clutch on driven pulley.
-
Liners of centrifugal clutch are out of specification (refer to CONTINUOUSLY VARIABLE TRANS-
MISSION). Replace centrifugal clutch assembly.
3. Check roller on drive pulley inner sheave.
-
Rollers are worn and/or wrong installed and/or otherwise damaged (refer to CONTINUOUSLY
VARIABLE TRANSMISSION). Replace all rollers at the same time (roller kit).
4. Check function of sprag clutch on driven pulley.
-
Sprag clutch is clogged and/or worn out (refer to CONTINUOUSLY VARIABLE TRANSMISSION).
Replace sprag clutch together with ball bearing and oil seal (refer to CONTINUOUSLY VARIABLE
TRANSMISSION).
ENGINE MAXIMUM RPM IS TOO HIGH AND TOP SPEED IS NOT REACHED.
Symptom:
1. Check items 1 to 3 of THE ATV ACCELERATES SLOWLY, ESPECIALLY WHEN IT IS STOPPED.
2. Check driven pulley spring tension.
-
Spring tension is too stiff. Replace spring (recommended BRP spring).
PULLEY NOISE AT IDLE SPEED.
Symptom:
1. Check slide pieces (drive pulley).
-
Worn slide pieces (increased clearance to drive pulley inner sheave). Replace all slide pieces at
the same time (slide piece kit).
2. Check driven pulley sliding mechanism (between driven pulley outer and inner sheave).
-
Mechanism is stuck and/or damaged. Replace driven pulley assembly.
3. Check rollers for wear (located on inner sheave of drive pulley).
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Roller(s) worn out. Replace all rollers at the same time (roller kit).
4. Check drive pulley nut for torque.
-
Loose nut. Retighten nut with recommended torque.
5. Check driven pulley bearing(s) for free movement.
-
Bearing(s) do(es) not move freely. Replace bearing(s) and oil seal inside driven pulley at the same
time.
vmr2006-065
Section 02 TROUBLESHOOTING
Subsection 01 (TROUBLESHOOTING CHART)
17