Pilot Screw Adjustment; Best Idle (05, 06: 49 States And Canada Type Only) - Honda CRF450X 2005 Service Manual

l
Adjust the throttle position sensor position so the
resistance between terminals Yel low and Black is BLUE
After rigl'llening the
bolt to the specified
torqlJfl, break
the
bolt head.
resistance calculated.
'OS, '06:
Tighten the torx screw to the specified torque.
TORQUE: 3.4 N'm (0.3 kgf·m , 2.5 Ibf.ft)
After '06:
Tighten the bolt to the specified torque.
TORQUE: 3.4 N'm (0.3 kgf·m , 2.5 Ibf.ft)
Connect the throttle position sensor connector.
Install the carburetor (page 6-24),
PILOT SCREW ADJUSTMENT
NOTE :
• The pi lot screw is factory pre-set and no adjust-
ment is necessary unless the pilot screw is
replaced .
• Use a tachometer with graduations of 50 rpm or
smaller that will accurately indicate a 50 rpm
change.
BEST IDLE (,05, '06: 49 States and
Canada type only)
DamaQ8 to the pilot 1.
screw sea t will
occur
if
the pilor
screw is tightened
against the seat.
Turn the pilot screw clockwise until it seats
lightly, then back it out the specified number of
turns.
TOOL:
Pilot screw w rench
07908·4730002
STANDARD OPENING: 1·114 tums out
2. Warm up the engine to operating temperature.
Ride the motorcycle for approximately 10 m in·
utes.
3. Stop the engine and attach a tachometer accord·
ing to its manufacturer's instruction.
4. Start the engine and adjust the engine idle speed
to the specified rpm with the throttle stop screw.
IDLE SPEED: 1,700
±
100 rpm
5. Turn the pilOt screw in or out slowly to obtain the
highest engine speed.
S. Readjust the idle speed to the speci fied rpm with
the throttle stop screw.
BLACK
FUEL SYSTEM
YellOW
BLUE
BLACK
6-27