Piston/Piston Rings/Piston Pin; Servicing Your Honda - Honda CRF450R 2009 Owner's Manual & Competition Handbook

Cylinder Head Removal
1. Clean the area above the engine before
disassembly to prevent dirt falling into the
engine.
2. Drain the radiator coolant after cooling the
motorcycle (page 139).
3. Remove the seat and hang the fuel tank (pages
33, 34).
4. Remove the muffler (page 97) and subframe
(page 36).
5. Remove the exhaust pipe (page 99).
6. Remove the spark plug (page 63).
7. Remove the cylinder head cover (page 64).
8. Set the piston at TDC on the compression
stroke (page 64).
9. Remove the camshaft holder, camshaft, valve
lifters and shims (page 66).
10. Disconnect the ignition coil connectors (1)
and unclamp them from the clamp (2) .
Remove the bolt and washer (3).
(3)
(2)
(1)
(1) ignition coil connectors
(2) clamp
11. Remove the bolt (4), ground wire (5) and
ignition coil/stay (6).
(5)
(4) bolt (6) ignition coil/stay
(5) wire

Piston/Piston Rings/Piston Pin

12. Disconnect the ECT sensor connector (7).
(7) ECT sensor connector
13. Loosen the radiator hose clamp screw (8) and
(3) bolt and washer
disconnect the radiator hose (9).
(4)
(8) radiator hose clamp screw
(6)
(9) radiator hose
(7)
(9)
(8)
(cont'd)
73

Servicing Your Honda