Special Tools; Engine Fastener Torque Patterns; Piston Identification / Compression Test - Polaris PREDATOR 2003 Service Manual

ENGINE

SPECIAL TOOLS

PART NUMBER
2872105
2200634
2870390
PA- -45958
PA- -46075
PA- - 46076
PA- -46087
PA- -46077
2871283
5131135
PA- -46502
ENGINE FASTENER TORQUE
PATTERNS
Tighten cylinder head, cylinder base, and crankcase
fasteners in 3 steps following the sequence outlined
below.
Cylinder Head/Cylinder Base
3 2
1 4
8
2
10
4
1
6
11
TOOL DESCRIPTION
Water Pump
Mechanical Seal Puller
Valve Seat
Reconditioning Kit
Piston Support Block
Cam Chain Tensionor
Assembly Tool
Flywheel Puller
MAG End Crankshaft
Nut Remover/Installer
Crankcase Separator
MAG End Crankshaft
Installer
Crankshaft/Water
Pump Seal Install Kit
Water Pump Install Kit
Valve Spring
Compressor
8mm
5
6
5
3
12
7
9
PISTON IDENTIFICATION
The piston may or may not have an identification
mark for piston placement. If the piston has an
identification mark, follow the directions for piston
placement below. If the piston does not have an
identification mark, the direction for placement of the
piston does not matter.
Note the directional and identification marks when
viewing the pistons from the top. Identifying marks
such as "F", " ! ", " "" or D
positioned to the flywheel side of the engine. Other
marks are used for identification as to diameter, length
and design. Four stroke engine rings are a
rectangular profile. See text for oil control ring rail
installation. Use the information below to identify
pistons and rings:
COMPRESSION TEST
NOTE: This engine has built--in decompression
components. Compression readings will vary in
proportion to cranking speed during the test. Average
compression (measured) is about 85- -90 psi @ 400
RPM during a compression test.
A cylinder leakdown test is the best indication of
engine condition. Follow manufacturer's instructions
to perform a cylinder leakage test. (Never use high
pressure leakage testers, as crankshaft seals may
dislodge and leak).
Cylinder Compression
w/ decompression
Standard: 85- -90 PSI @ 400 RPM
Cylinder Leakdown
Service Limit
(Inspect for cause if leakage exceeds 10%)
must always be
10 %
3.5