Honda CRF450X 2017 Owner's Manual & Competition Handbook page 86

5. Apply engine oil to the cylinder wall, piston
outer surface and piston rings.
Route the cam chain (3) through the cylinder (4).
Install the cylinder over the piston rings by
hand while compressing the piston rings (5).
NOTICE
Do not damage the piston rings and cylinder
wall.
(4)
(5)
(3) cam chain
(4) cylinder
(5) piston rings
17 CRF450X̲31MEY710.indb 81 17 CRF450X̲31MEY710.indb 81
6. Temporarily install the cylinder bolt (6) and
connect the breather tube (7) to the cylinder.
(6)
(6) cylinder bolt
(3)
(7) breather tube
7. Install the cam chain guide (8) and fit the
cam chain guide tabs (9) in the cylinder cut-
outs (10). Push the cam chain guide until it
bottoms in the crankcase guide hole.
(9)
(10)
(8) cam chain guide
(9) cam chain guide tabs
(10) cylinder cut-outs
Piston/Piston Rings/Piston Pin
Cylinder Head Installation
1. Install the dowel pins (1) and new cylinder
(7)
head gasket (2).
NOTICE
Do not let the dowel pins fall into the crankcase.
(2)
(1) dowel pins
(2) cylinder head gasket
(8)
(1)
(cont'd)
81
Servicing Your Honda
2016/06/08 11:45:59 2016/06/08 11:45:59