Arctic Cat 650 Twin2004, Service Manual

Page: 39 / 210

3-10
Removing Top-Side
Components
A. Valve Covers
B. Cylinder Heads

NOTE: Remove the spark plugs and timing
inspection plug (A); then using the recoil starter,
rotate the crankshaft to top-dead-center (TDC) of
the compression stroke of the front cylinder. TF is
top-dead-center front.
KX247
ATV2057A
1. Remove the two tappet covers. Account for two
gasket rings.
2. Remove the cap screws (A) securing the front
valve cover to the head; then remove the front
valve cover (B).
ATV2065

NOTE: Leave the camshaft and camshaft chain
tensioner installed until the rear rocker case is
removed or the cam chain will have to be sup-
ported while rotating the crankshaft.
3. Rotate the crankshaft counterclockwise to position
the rear cylinder at TDC on the compression
stroke; then remove the two tappet covers.
Account for two gasket rings. TR is
top-dead-center rear.
ATV2058A
4. Remove the cap screws (A) securing the rear valve
cover to the head; then remove the rear valve
cover (B).
ATV2066
5. Remove front and rear camshaft chain tensioners
by first removing the spring cap (D). Account for
one washer (C), one spring (B), and one guide rod
(A) for each tensioner.
! CAUTION
Be sure the crankshaft is on TDC of the
compression stroke of the front cylinder or valve
damage could occur.