User Guide

7. CYLINDER HEAD/VALVES
7-9
Mongoose/KXR 250
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
carburetor intake manifold.
Remove the bolt and disconnect the
thermostat.
Remove the two cylinder head bolts.
Remove the cylinder head.
CYLINDER HEAD DIS ASSEMBLY
Remove the valve spring cotters, retainers,
springs, spring seats, oil seals and valves
using a valve spring compressor.
Valve Spring Compressor E040
Bolts
Intake Manifold
Bolt
Bolt
Bolts
Valve Cotter
Retainer
Springs
Springs Seat
Oil Seal
Valve
Spring Compressor
• Be sure to compress the valve
springs with a valve spring compressor.
• Mark all disassembled parts to
ensure correct reassembly.
°Ø
Special