Polaris Outlaw 500, Service Manual

Page: 51 / 202

3.4
ENGINE
ES50PL Engine Service Data
Cylinder Head / Valve ES50PL
Camshaft
Cam lobe height
In
Std 1.667–1.671” (42.35–42.45 mm)
Limit 1.655” (42.05 mm)
Ex
Std 1.667–1.671” (42.35–42.45 mm)
Limit 1.655” (42.05 mm)
Camshaft journal OD
Mag .9821–.9828” (24.946–24.963 mm)
PTO .8652–.8655” (21.976–21.985 mm)
Camshaft journal bore ID
Mag .9842–.9851” (25.000–25.021 mm)
PTO .8657–.8661” (21.990–22.000 mm)
Camshaft Oil clearance
Mag .0014–.0029” (.037–.075 mm)
PTO .0001–.0009” (.005–.024 mm)
Limit .004” (.10 mm)
Cylinder Head
Surface warpage limit .0020” (.05 mm)
Standard height 4.975” (126.4 mm)
Valve Seat
Contacting width
**Measure valve stem
height
In
Std 1.5255” (38.75 mm)
Limit 1.5425” (39.18 mm)
Ex
Std 1.5255” (38.75 mm)
Limit 1.5377” (39.06 mm)
Valve Guide
Inner diameter .2362- .2367” (6.0- 6.012 mm)
Protrusion above head .535- .551” (13.6- 14.0 mm)
Valve
Margin thickness
In
Std .039” (1.0 mm)
Limit .031” (.8 mm)
Ex
Std .039” (1.0 mm)
Limit .031” (.8 mm)
Stem diameter
In .2343–.2348” (5.950–5.965 mm)
Ex .2341–.2346” (5.945–5.960 mm)
Stem oil clearance
Std
In .0014–.0024” (.035–.062 mm)
Ex .0016–.0026” (.040–.067 mm)
Limit .0059” (.15 mm)
Overall length
In 4.031” (102.4 mm)
Ex 4.059” (103.1 mm)
Valve Lash
In .006” (.15 mm) +/- .0019” (.05 mm)
Ex .010” (.27 mm) +/- .0019” (.05 mm)
Valve Spring
Overall length
Limit = -.079” (-2.0 mm)
Inner 1.575” (40.0 mm)
Outer 1.650” (41.9 mm)
Squareness
Inner .067-” (1.7 mm)
Outer .071” (1.8 mm)
RepairPro Service Manual