Honda CRF450X 2017 Owner's Manual & Competition Handbook page 79

Valve Clearance
Crankshaft Hole Cap Installation
Coat a new O-ring (1) with engine oil and install
it onto the crankshaft hole cap (2).
Apply grease to the crankshaft hole cap threads.
Install and tighten the crankshaft hole cap to the
specified torque:
11 lbf·ft (15 N·m, 1.5 kgf·m)
(1) O-ring
(2) crankshaft hole cap
74
Servicing Your Honda
17 CRF450X̲31MEY710.indb 74 17 CRF450X̲31MEY710.indb 74
Cylinder Head Cover Installation
1. Check the spark plug hole packing (1) is in
good condition, replace it if necessary.
Apply engine oil to the spark plug hole
packing and install it to the spark plug hole
(2).
(1)
(2)
(2)
(1) spark plug hole packing
(2) spark plug hole
2. Inspect the cylinder head cover packing (3)
for damage or deterioration, replace it if
necessary.
Install the cylinder head cover packing into
the groove of the cylinder head cover (4).
(3) cylinder head cover packing
(4) cylinder head cover
3. Check 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.
(1)
(5) rubber seal
(6) "UP" marks
4. Install the cylinder head cover (4).
5. Tighten the cylinder head cover A bolt/rubber
seal (7) and cylinder head cover B bolts/
rubber seals (8) to the specified torque:
7 lbf·ft (10 N·m, 1.0 kgf·m)
(4)
(4) cylinder head cover
(7) cylinder head cover A bolt/rubber seal
(3)
(8) cylinder head cover B bolts/rubber seals
(6)
(5)
(6)
(8)
(4)
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(7)