3
9929422 R02 - 2017-2019 ACE 900 Service Manual
© Copyright Polaris Industries Inc.
3.45
CYLINDER HEAD DISASSEMBLY
CAUTION
Wear eye protection during cylinder head disassembly
and reassembly or when working with the valve springs.
NOTICE
Keep mated parts together and in order with respect to
their location in the cylinder head for assembly
purposes. It is important to install cylinder head
components back in the same location. Mark each
component or place them in an organized rack as you
remove them.
1. Remove the valve tappet
q
and note the number on
the bottom side of the tappet
w
.
2. Compress the valve spring by hand using valve
spring compressor adapter (PV-43513-A).
3. Push down on spring and remove split keepers
e
.
4. Slowly release valve spring pressure and remove the
compressor adapter.
5. Remove the valve retainer
r
, valve spring
t
and
the valve stem seal / seat
y
. Discard the valve seal.
NOTICE
Replace valve seals whenever cylinder head is
disassembled. Hardened, cracked or worn seals will
cause excessive oil consumption.
6. Lift up the cylinder head and push the valve
u
out,
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.
ENGINE / COOLING SYSTEM
To Next Page
Loading...
Need help?
General
