User Manual - Page 92

For CRF450R.

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Servicing Your Honda 87
Valve Clearance
1. Check that the spark plug hole packing (1) is in
good condition and replace it if necessary.
Apply engine oil to the spark plug hole packing
and install it to the cylinder head cover (2).
2. Check that the cylinder head cover packing (3)
is in good condition and replace it if necessary.
Clean and apply liquid sealant (TB1207B or
equivalent) to the cylinder head cover groove
(4)
in the shown and install the cylinder head
cover packing into the cylinder head cover
groove.
3. Check that the rubber seals (5) are in good
condition, replace them if necessary.
Install the rubber seals onto the cylinder head
cover with the “UP” marks (6) facing up.
4. Install the cylinder head cover (2) and tighten
the cylinder head cover socket bolts (7) to the
specified torque:
7 lbf·ft (10 N·m, 1.0 kgf·m)
5. Connect the
spark plug cap (8) and breather
tube (9).
6. Install the fuel tank and seat (pages 34, 36, 38).
Cylinder Head Cover Installation
(1) spark plug hole packing
(2) cylinder head cover
(3) cylinder head cover packing
(4) cylinder head cover groove
(3)
(2)
(1)
(4)
(5) rubber seals
(6) “UP” marks
(2) cylinder head cover
(7) cylinder head cover socket bolts
(6)
(6)
(5)
(7)
(2)
(8) spark plug cap
(9) breather tube
(8)
(9)
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