Engine Specifications - 1000 - Polaris Sportsman 850 Service Manual

ENGINE SPECIFICATIONS - 1000

CYLINDER HEAD (IN. / MM)
Cam Lobe Height - Intake (Standard)
Cam Lobe Height - Exhaust (Standard)
Camshaft Journal Outer Diameter - (All)
Camshaft
Camshaft Journal Bore Inner Diameter - (All) .8665" ± 0.0004" (22.01 ± 0.01 mm)
Camshaft Oil Clearance
Camshaft End Play
Rocker Shaft O.D. (Intake and Exhaust)
Rocker Arm and
Rocker Shaft Bore I.D. (Cylinder Head)
Shaft
Rocker Arm Bore I.D. (Intake and Exhaust)
Cylinder Head - Surface warp limit
Cylinder Head
Cylinder Head - Standard height
Valve Seat - Contacting Width - Intake
Valve Seat - Contacting Width - Exhaust
Valve Seat
Valve Seat Angle
Valve Guide Inner Diameter
Valve Guide Protrusion Above Head - Intake
Valve Guide
Valve Guide Protrusion Above Head -
Exhaust
Valve Lash (Cold) - Intake
Valve Lash (Cold) - Exhaust
Valve Margin Thickness - Intake
Valve Margin Thickness - Exhaust
Valve Stem Diameter - Intake
Valve
Valve Stem Diameter - Exhaust
Valve Stem Oil Clearance - Intake
Valve Stem Oil Clearance - Exhaust
Valve Stem Overall Length - Intake
Valve Stem Overall Length - Exhaust
Valve Spring Free Length
Valve Spring
Valve Spring Installed Height
ENGINE / COOLING SYSTEM
1.566" (39.795 mm)
1.577" (40.067 mm)
.8632" ± 0.0004" (21.925 ± 0.01 mm)
0.0033" ± 0.0008" (0.085 ± 0.02 mm)
0.008" ± 0.004" (0.20 ± 0.10 mm)
0.5501" (13.973 - 13.984 mm)
0.5543" ± 0.0006" (14.079 ± 0.014 mm)
0.5514" - 0.5525" (14.006 - 14.033 mm)
0.004" (0.1 mm)
3.611" (91.71 mm)
0.047" ± 0.008" - 0.0039" (1.20 ± 0.20 mm)
0.047" ± 0.008" - 0.0039" (1.20 ± 0.20 mm)
45.5° ± 0.25°
0.217" + .0005" - 0.0 (5.52 + .012 - 0.0 mm)
0.361" ± 0.010" (9.18 ± 0.25 mm)
0.315" ± 0.010" (8.00 ± 0.25 mm)
0.000" (.000 mm)
Refer to Chapter 2 "Valve Clearance Adjustment"
0.04" (1.00 mm)
0.027" (.70 mm)
0.2163" ± 0.0003" (5.495 ± 0.0075 mm)
0.2159" ± 0.0003" (5.485 ± 0.0075 mm)
0.0012" ± 0.0005" (0.031 ± 0.0135 mm)
0.0016" ± 0.0005" (0.041 ± 0.0135 mm)
4.6638" ± 0.012" (118.46 ± 0.30 mm)
4.5488" ± .012" (115.54 ± 0.30 mm)
1.904" (48.35 mm)
Intake - 1.650" (41.91 mm)
Exhaust - 1.650" (41.91 mm)
3
3.9