Page 204 - Manual Oficina Polaris Sportsman 570 2014 a 2016

P. 204

ENGINE / COOLING SYSTEM

ENGINE ASSEMBLY - LOWER END 7. Be sure crankshaft is fully seated and rotates
smoothly.
CRANKCASE ASSEMBLY
NOTE
1. Clean upper and lower crankcase sealing surface to The crankshaft PTO seal can be replaced with the
remove all old sealant and oil residue.
engine installed in the chassis. The engine does not
2. Place crankcase cylinder side down on a sturdy work have to be removed and the crankcase does not have
bench. to be separated to replace the crankshaft seal.
3. On the upper crankcase, install the chain guides.
Torque fasteners to specification. 8. Apply a thin film of Crankcase Sealant (PN 2871557)
evenly to the clean and oil-free lower crankcase
mating surface.

TORQUE
Camshaft Chain Guide Screws:
7 ft-lbs (10 Nm)

Crankcase Sealant:
NOTE
PN 2871557
The chain guides must be installed before assembling
the upper and lower crankcases. 9. Verify alignment pins location and install lower
crankcase onto upper crankcase assembly while
4. Lubricate all crankcase bearings with engine oil. pressing the PTO seal firmly against the bearing
race.
5. Slide a new crankshaft seal over the PTO end of the
crankshaft with numbers facing OUT. Be sure seal lip 10. Install and torque crankcase bolts in sequence to
does not fold back when moving over the crankshaft specification:
flange.
TORQUE
CAUTION Crankcase Screws::
7 ft-lbs (10 Nm) (In Sequence)
Wipe the crankshaft seal O.D. with isopropyl alcohol
before installation.
Do not lubricate the crankcase seal O.D.

6. Loosely install the cam chain retainer plate and
screw into the lower crankcase.. Install the cam
chain onto the drive gear on the crankshaft. Install
the crankshaft into the lower crankcase.
NOTE
The cam chain must be installed on the crankshaft
during crankshaft installation into the lower crankcase.
Once the crankcases are mated and the retainer plate
secured, the cam chain will be held in place on the
crankshaft.

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