Honda 2015 CRF450X Off-road Trail

User Manual - Page 139

For 2015 CRF450X.

PDF File Manual, 182 pages, Read Online | Download pdf file

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Adjustments for Competition 139
Carburetor Adjustment & Tuning Tips
10. Measure the float level (24) with the float
level gauge (25) during float tab is just
contacting the float valve and the carburetor
intake (26) facing up. The float level should
be 0.31 in (8.0 mm).
If the float level is out of specification, adjust
it by bending the float tab carefully.
(26)
(25)
(24)
(24) oat level
(25) oat level gauge
(26) carburetor intake
11. Remove the leak jet (27) and O-ring (28)
from the float bowl (16).
Clean the leak jet.
(28)
(27)
(16)
(16) oat bowl
(27) leak jet
(28) O-ring
Carburetor Assembly
To assemble, reverse the disassembly procedures.
To install the carburetor, reverse the removal
procedures.
Tighten the following parts to the specified
torque.
leak jet:
0.2 lbf·ft (0.3 N·m, 0.03 kgf·m)
float bowl screws:
1.5 lbf·ft (2.1 N·m, 0.2 kgf·m)
accelerator pump cover screws:
1.5 lbf·ft (2.1 N·m, 0.2 kgf·m)
carburetor top cover bolts:
1.5 lbf·ft (2.1 N·m, 0.2 kgf·m)
jet needle/holder assembly:
1.5 lbf·ft (2.1 N·m, 0.2 kgf·m)
link arm torx screw:
1.5 lbf·ft (2.1 N·m, 0.2 kgf·m)
throttle drum cover bolt:
2.5 lbf·ft (3.4 N·m, 0.3 kgf·m)
hot start cable nut:
1.5 lbf·ft (2.1 N·m, 0.2 kgf·m)
throttle cable lock nut:
3.0 lbf·ft (4.0 N·m, 0.4 kgf·m)
throttle cable bolt:
3.0 lbf·ft (4.0 N·m, 0.4 kgf·m)
shock absorber upper mounting nut:
32 lbf·ft (44 N·m, 4.5 kgf·m)
r 5JHIUFOUIFJOTVMBUPSCBOETDSFXTPUIF
insulator band distance is 0.5 ± 0.04 in (12 ±
1 mm).
r 3PVUFUIFUISPUUMFDBCMFTIPUTUBSUDBCMF
(3) and throttle position sensor wire correctly.
r "GUFSJOTUBMMJOHUIFDBSCVSFUPSBEKVTUUIF
throttle grip freeplay and hot start lever
freeplay.
r "GUFSJOTUBMMJOHUIFDBSCVSFUPSDIFDLUIF
throttle position sensor connector (4) for
correct routing.
r "GUFSJOTUBMMJOHUIFDBSCVSFUPSDIFDLUIF
air vent hoses (5) and overflow hose (6) for
kinking or pinching and correct routing.
r "GUFSDPOOFDUJOHUIFGVFMMJOFDIFDLUIF
fuel line clamps (8) as illustrated. (next page)
r $IFDLUIBUUIF6SJOHBOE0SJOHBSFJOHPPE
condition. Replace them if necessary.
(1)
0.5 p 0.04 in
(12 p 1 mm)
(1) insulator band screw
(4)
(3)
(2)
(2) throttle cables
(3) hot start cable
(4) throttle position sensor connector
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