Piston/Piston Rings/Piston Pin - Honda CRF450X 2017 Owner's Manual & Competition Handbook

Piston/Piston Rings/Piston Pin

Cylinder Head Removal
1. Clean the area above the engine before
disassembly to prevent dirt falling into the
engine.
2. Drain the engine oil (page 44).
3. Drain the radiator coolant after cooling the
motorcycle (page 149).
4. Remove the seat and fuel tank (pages 36, 37).
5. Remove the muffler (page 62).
6. Lift the subframe to the upright position
(page 39).
7. Remove the carburetor (page 136).
8. Remove the exhaust pipe (page 64).
9. Remove the spark plug (page 61).
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Servicing Your Honda
17 CRF450X̲31MEY710.indb 76 17 CRF450X̲31MEY710.indb 76
10. Remove the bolt A (1), bolt B (2) and O-ring
(3).
11. Disconnect the air suction hose (4) and
vacuum hose (5).
Remove the PAIR control valve (6).
(1)
(4)
(5)
(2)
(3)
(1) bolt A (4) air suction hose
(2) bolt B (5) vacuum hose
(3) O-ring (6) PAIR control valve
12. Remove the cylinder head cover (page 66).
13. Position the piston at top dead center on the
compression stroke (page 66).
14. Remove the camshaft holder assembly, lifters
and shims (page 68).
15. Remove the left radiator grill (7) and left
radiator mounting bolts/washers (8).
(8)
(7)
(7) left radiator grill
(8) left radiator mounting bolts/washers
16. Disconnect the primary wire connector (9).
Remove the bolt (10) and ignition coil (11).
(10)
(6)
(9) primary wire connector
(10) bolt
(11) ignition coil
17. Loosen the radiator hose clamp (12) and
disconnect the radiator hose (13).
(12) radiator hose clamp
(13) radiator hose
(9)
(11)
(13)
(12)
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