Page 138 - Manual Oficina Polaris RS1 2018 e 2019

ENGINE / COOLING SYSTEM

2. Compress the valve spring by hand using valve VALVE INSPECTION
spring compressor adapter (PV-43513-A). Valve 1. Remove all carbon from valves with a soft wire wheel
spring compressor (PV-1253 or PV-4019 (Quick or brush.
Release)) can be used if desired to aid in removal.
2. Check valve face for runout, pitting, and burnt spots.
To check for bent valve stems, mount valve in a drill
or use “V” blocks and a dial indicator.

3. Push down on spring and remove split keepers e.

3. Check the end of the valve stem for flaring, pitting,
wear or damage.

4. Slowly release valve spring pressure and remove the
compressor adapter.
5. Remove the valve retainer r, valve spring t, valve
stem seal y and valve spring seat u. Discard the
valve seal.
4. Inspect split keeper groove for wear or flaring in the
NOTE keeper seat area.
Replace valve seals whenever cylinder head is
disassembled. Hardened, cracked or worn seals will NOTE
cause excessive oil consumption. The valves can be re-faced or end ground, if necessary.
They must be replaced if extensively worn, burnt, bent
6. Lift up the cylinder head and push the valve i out, or damaged.
keeping it in order for reassembly in the same valve
guide.
7. Repeat the previous steps to remove the remaining
valves.
8. Clean the combustion chamber and head gasket
surface.
9. Check the condition of each valve spring. Replace if
wear or cracking is present on the spring.

3.52 9928689 - 2018 RZR RS1 Service Manual
© Copyright Polaris Industries Inc.