Piston/Piston Rings/Piston Pin - Honda CRF250R Owner's Manual

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 radiator coolant after cooling the
motorcycle (page 157).
3. Remove the seat and hang the fuel tank (pages
34, 35).
4. Remove the left and right mufflers (page 121)
and subframe (page 38).
5. Remove the exhaust pipe (page 124).
6. Remove the spark plug (page 67).
7. Remove the cylinder head cover (page 68).
8. Set the piston at TDC on the compression
stroke (page 68).
9. Remove the camshaft holders, camshaft, valve
lifters and shims (page 70).
10. Disconnect the ECT sensor connector (1).
(1)
(1) ECT sensor connector
11. Loosen the radiator hose clamp screw (2) and
disconnect the radiator hose (3).
(3)
(2)
(2) radiator hose clamp screw
(3) radiator hose

Piston/Piston Rings/Piston Pin

12. Disconnect the crankcase breather tube A (4)
from the air cleaner connecting tube.
13. Disconnect the IAT sensor connector (5).
14. Release the crankcase breather tube B (6) from
the clip (7).
(4)
(7)
(5)
(4) crankcase breather tube A
(5) IAT sensor connector
(6) crankcase breather tube B
(7) clip
15. Loosen the screw (8) on the air cleaner
connecting tube clamp (9).
(8) screw
(9) air cleaner connecting tube clamp
Servicing Your Honda
(6)
(9)
(8)
(cont'd)
77