2001 Bombardier DS 650 Shop Manual 704 100 011, Page 64Get this manual
Section 03 ENGINE Subsection 05 (CYLINDER AND HEAD)
Installation
CAUTION: The markings on the timing gears must be aligned opposite the joint in the camshaft carrier
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A11.5 mm (0.45 in)
NOTE: Never stretch spring since this alters the defined spring forceWhen activated, the amount of lifting arm protruding over the cam pitch circle must not be less than dimension "B"B
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1Align marks
Tighten screws no16 for chain guide with Loctite 243, hand tightFit upper section of camshaft carrier and tighten downCheck valve clearanceRefer to MAINTENANCE LUBRICATIONInstall chain tensioner and tighten screw no17 with sealing ring no18Install valve cover with gasketUnscrew and remove crankshaft locking boltInstall the screw plug with sealing ringTorque to 24 Nm (18 lbfft)