Arctic Cat 660 cc Service Manual page 71

58. Install the exhaust manifold and new gasket.
Tighten the cap screws and nuts to 2.4 kg-m (17 ft-
lb) (STD) or to 2.3 kg-m (16.5 ft-lb) (turbo).
NOTE: The engine lift bracket mounts to the far
left (PTO-end) exhaust manifold stud.
59. Install the oxygen sensor and tighten to 5.1 kg-m
(37 ft-lb).
NOTE: On turbo models, install the turbo (see
Section 3).
NOTE: A small amount of Anti-Seize Thread
Compound (p/n 0678-146) applied to the threads of
the sensor will aid in future removal.
60. Install the exhaust heat shield and four cap screws;
then tighten the cap screws to 1.1 kg-m (8 ft-lb).
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61. Install the spark plugs; then tighten to 1.8 kg-m
(13 ft-lb). Install the ignition coils and cap screws;
then tighten the cap screws to 1.3 kg-m (9.5 ft-lb).
62. Install the air-intake manifold gasket, air-intake
manifold, and wire loom tab. Tighten the eight
nuts and four cap screws to 1.3 kg-m (9.5 ft-lb).
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