Page 142 - Manual Oficina Polaris RS1 2018 e 2019

ENGINE / COOLING SYSTEM

Intake Seat Cutter Diameter: 1.567″ (39.80 mm) 8. Clean all filings from the area with hot soapy water.
Rinse and dry with compressed air.
9. Lubricate valve guides with clean engine oil and apply
oil or water based lapping compound to the face of
the valve.
NOTE
Lapping is not required if an interference angle
reconditioning method is used.

10.Insert the valve into its respective guide and lap using
a lapping tool or a section of fuel line connected to the
valve stem.
11. Rotate the valve rapidly back and forth until the cut
sounds smooth. Lift the valve slightly off of the seat,
rotate 1/4 turn, and repeat the lapping process. Do
this four to five times until the valve is fully seated,
and repeat process for the other valve(s).
12.Thoroughly clean cylinder head and valves.

Exhaust Seat Cutter Diameter: 1.364″ (34.65 mm)

MEASUREMENT
Valve Seat Width:
Intake:
.0393 ± .0039" (1.0 ± 0.10 mm)

Service Limit:
.0551" (1.4 mm)

Exhaust:
.0590 ± .0039" (1.5 ± 0.10 mm)

Service Limit:
.0748" (1.9 mm)

3.56 9928689 - 2018 RZR RS1 Service Manual
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