Cylinder Head Installation - Honda CRF450R Owner's Manual

4. SERVICE AND MAINTENANCE
Apply fresh engine oil to the cylinder wall, piston outer
surface and piston rings.
Route the cam chain though the cylinder.
Install the cylinder over the piston rings by hand while
compressing the piston rings.
CAUTION:
Do not damage the piston rings and cylinder walls.
•
(1) CAM CHAIN (2) CYLINDER
(3) PISTON RINGS
44
Install the cam chain guide and fit the cam chain guide
tabs in the cylinder cut-outs.
Push the guide until bottoms in the crankcase guide
hole.
(1) CAM CHAIN GUIDE
(2) CAM CHAIN GUIDE TABS
(3) CYLINDER CUT-OUTS

Cylinder Head Installation

Install the dowel pins and new cylinder head gasket.
CAUTION:
Do not let the dowel pins fall into the crankcase.
•
(1) DOWEL PINS
(2) CYLINDER HEAD GASKET