Honda CRF450R Owner's Manual page 68

5. CARBURETOR ADJUSTMENT
To assemble, reverse the disassembly procedures.
To install the carburetor, reverse the removal proce-
dures.
NOTE:
• After installing the carburetor, adjust the throttle
cable free play and hot start cable free play.
• After installing the carburetor, check the air vent
tubes and overflow hose for kinking or pinching and
correct routing as necessary.
2
3
(1) THROTTLE CABLES
(2) HOT START CABLE
(3) THROTTLE SENSOR CONNECTOR
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1
5
(4) AIR VENT HOSES
(5) OVERFLOW HOSE
Pre-adjustment Checks
Before adjusting carburetor settings, check the follow-
ing:
1. air cleaner condition (page 27)
2. air leaks
3. ignition timing
4. float level
5. clogged carburetor jets
6. spark plug fouling or improper heat range
If the above check out, then, adjust the carburetor for
your specific racing conditions. Engine response and
appearance of the firing end of a spark plug are highly
indicative of the engine condition.
Refer to the list on page 9 for the optional carburetor
parts.
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