Exhaust Camshaft Decompression Mechanism; Cam Chain And Guide Service; Cylinder Head Removal - Polaris 2014 Sportsman 570 EF Service Manual

Exhaust Camshaft Decompression
Mechanism
NOTE: Removal of the decompression mechanism
is not necessary unless replacement is required.
1. Thoroughly clean and inspect the decompression
mechanism (1) located on the exhaust camshaft.
2. Replace the decompression assembly if any
excessive wear or binding is evident.
3. Be sure the decompression mechanism functions
smoothly and easily returns under spring pressure to
the resting position against gravity.

Cam Chain and Guide Service

NOTE: The crankcase has a removable lower cam
chain drive guide that prevents the chain from
disengaging the crankshaft during engine service.
The cam chain, cam chain guides and cam chain
tensioner can be replaced with the engine installed
in the vehicle.
1. If not already performed, remove the valve cover,
stator cover, flywheel, cam chain tensioner, cam
carrier and camshafts as outlined in this chapter.
2. Remove the two fasteners (1) that secure the cam
chain guides (2) to the crankcase.
3. Remove the fastener (3) that secure the lower cam
chain guide (4) to the crankcase.
4. Inspect the cam chain guides and replace if
excessive wear is evident.
9924871 R03 - 2014 Polaris Sportsman® 570 EFI Service Manual
5. Upon installation, torque all fasteners to specification
and reassemble engine and vehicle as outlined in
this chapter.

Cylinder Head Removal

NOTE: The cylinder head can be serviced with the
engine installed in the chassis.
Do not rotate head assembly up side-down until the
valve tappets have been removed.
1. Remove and discard the (2) outer M6 bolts (A) that
retain the cylinder head (B) and the cylinder.
2. Loosen the (4) cylinder head bolts (C) evenly 1/8 turn
(60 degrees) at a time until all are loose.
3. Remove and discard the cylinder head bolts (C).
Replace with new upon assembly.
4. Tap cylinder head lightly with a soft faced hammer
until loose. Tap only in reinforced areas or on thick
parts of the cylinder head casting.
© Copyright 2013 Polaris Sales Inc.
ENGINE
Cam Chain Guide Fasteners:
9 ft-lb (12 Nm)
3
3.43