Cylinder Head Installation - Polaris ACE 900 2017 Service Manual

CYLINDER HEAD INSTALLATION

1. If necessary, rotate the engine so the cylinder is
facing up.
2. If installed, remove the Cylinder Holding & Camshaft
q
Timing Plate from the cylinder.
NOTICE
Once the cylinder head is removed, nothing retains the
cylinder to the engine. DO NOT rotate the engine
without using the Cylinder Holding & Camshaft Timing
Plate (PU-50563).
3. Prepare cylinder head gasket sealing surfaces by
cleaning thoroughly to remove all residue. The head
gasket must be installed clean and dry, free from oil
or grease.
NOTICE
Do not touch sealing surfaces of gasket.
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4. Guide cam chain through a new head gasket
and install the gasket on the cylinder, locating it on
the alignment pins.
5. Carefully set the cylinder head
alignment pins.
6. Install new bolts and finger tighten the six cylinder
t
head bolts evenly.
9929422 R02 - 2017-2019 ACE 900 Service Manual
© Copyright Polaris Industries Inc.
7. Install and finger tighten the two outer M6 bolts
evenly.
8. Torque
specification.
e
r
in place on
ENGINE / COOLING SYSTEM
NOTICE
Install new cylinder head bolts.
cylinder head bolts in
TORQUE
Cylinder Head Torque Procedure:
Torque in sequence:
Step 1: 9 ft-lbs (12 Nm)
Step 2: 26 ft-lb (35 Nm)
Step 3: Additional 180°
Step 4: M6 bolts: 7 ft-lb (10 Nm)
y
3
sequence to
3.83