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7. CYLINDER HEAD/VALVES ATV 300/250
Intake Manifold
CYLINDER HEAD
REMOVE
Remove the camshaft. (Refer to the
"camshaft remove" section in the chapter 7)
Remove the carburetor. (Refer to the
"carburetor remove" section in the chapter
5)
Remove the exhaust muffler. (Refer to the
"exhaust muffler remove" section in the
chapter 2)
Remove the two bolts and then remove the Bolts
carburetor intake manifold.
Bolt Bolts
Remove the bolt and disconnect the
thermostat.
Remove the two cylinder head bolts.
Remove the cylinder head.
Bolt
Valve Cotter Retainer Springs Springs Seat
CYLINDER HEAD DISASSEMBLY
Remove the valve spring cotters, retainers,
springs, spring seats, oil seals and valves
using a valve spring compressor.
· Be sure to compress the valve springs
with a valve spring compressor.
· Mark all disassembled parts to ensure
correct reassembly.
Spring Compressor Oil Seal Valve
Special tool:
Valve Spring Compressor E040
7-9