BOMBARDIER RALLY 200 2003 Shop Manual page 74

Section 03 ENGINE
Subsection 02 (TROUBLESHOOTING)
SYMPTOM ENGINE SUDDENLY TURNS OFF.
CONDITION NORMAL USE.
Test/Inspection
03-02-14
6. Cracked or broken piston.
a. Cracked or broken piston due to excessive piston/cylinder clearance or engine
overreving.
Replace piston. Check piston/cylinder clearance (refer to CYLINDER AND HEAD).
7. Check piston rings and cylinder surface for grooves.
a. Poor oil quality.
Use a high quality oil.
b. Contamination (like sand) through engine intake.
Replace defective part(s) and use new air filter.
8. Check connecting rod, crankshaft, rocker arm rollers movement.
a. Connecting rod failure due to leak of oil.
Repair and replace defective parts and use a high quality oil.
b. Crankshaft failure due to leak of oil.
Repair and replace defective parts and use a high quality oil.
c. Oil contamination due to clogged oil filter.
Replace oil filter and oil at the same time, replace defective part(s) (refer to MAIN-
TENANCE CHART).
9. Check valve springs exhaust/inlet.
a. Broken valve spring damages the cylinder head, valve(s), rocker arm(s)/piston.
Replace defective part(s) and do the valve adjustment.
VMR2003_006_03_02A.FM