2006 Yamaha Apex Mountain (RX10M) SNOWMOBILE Service Repair Manual

Page 24

VALVE CLEARANCE ADJUSTMENT

INSP ADJ

NOTE: S If the valve clearance is incorrect, record the measured reading. S Measure the valve clearance in the following sequence. Valve clearance measuring sequence Cylinder #1 ! #2 ! #4 ! #3 A Front For each cylinder, starting with cylinder #1 at TDC, turn the crankshaft clockwise as specified in the following table. B Degrees that the crankshaft is turned clockwise C Cylinder D Combustion cycle

#2 Cylinder

180_

#4 Cylinder

360_

#3 Cylinder

540_

4. Remove: S Intake camshaft S Exhaust camshaft NOTE: S Refer to “CAMSHAFTS” in CHAPTER 5. S When removing the timing chain and camshafts, fasten a wire to the timing chain to retrieve it if it falls into the crankcase.

5. Adjust: S Valve clearance

2-10

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Adjustment steps: S Remove the valve lifter 1 and the valve pad 2 with a valve lapper 3 .


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