Can-Am DS 450 2008 Shop Manual page 115

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1. Timing chain guide
Remove camshaft timing gear screws.
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1. Timing gear screws
Remove camshaft timing gears.
NOTE: Secure timing chain with a securing wire.
Camshaft Timing Gear Inspection
Check camshaft timing gears for wear or deterio-
ration.
If a gear is worn or damaged, replace it as a set
(both camshaft timing gears, intermediate gear
and timing chain).
Upper Chain Guide
Inspect also upper chain guide for wear. Replace
if necessary.
Camshaft Timing Gear Installation
(Top End Repair Only)
The installation is the reverse of the removal pro-
cedure. However, pay attention to the following.
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Subsection 07 (CYLINDER HEAD/CYLINDER)
NOTE: Make sure that crankshaft is locked to
TDC.
Install timing gears on camshafts so that marks
"IN" on intake and "EX" on exhaust camshaft are
aligned.
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1. Marks on timing gears
Install the TIMING CHAIN TENSIONER
cedure in this section.
Recheck timing gears alignment after the installa-
tion of timing chain tensioner.
Camshaft Timing Gear Installation
(Complete Engine Repair)
CAUTION: To achieve proper camshaft timing
after a complete engine tear down, the follow-
ing procedure must be strictly followed.
NOTE: Timing chain drive gears must be installed,
but the control gear must not be tightened.
TIMING GEARS INSTALLATION
Refer to
CRANKCASE/CRANKSHAFT
Put timing gear on exhaust camshaft.
Position gear so that the "EX" mark is parallel with
the camshaft holder split line.
Section 03 ENGINE
. See pro-
section.
in
95