System Inspection - Honda CRF450X 2005 Service Manual

Motorcycle
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(
'-.
7. Turn
the
p ilot screw in o
r
out slowly to
obt
ain the
highest
engine speed.
8. Lig htly open the throttle 2 or 3
times, then
adj
ust
the
idle speed with
the
throttle stop screw.
9.
Turn the pilot
screw in until the engine speed
drops by
50
rpm.
I
O.Turn the pilot screw counterclockwise
to
the
final
opening from the position obtai ned in step 9.
FINAL
OPENING:
112
turns out
l1.Remove the plug
from
the vacuum hose, then
disconnect
the vacuum pump and
con
nect
the
vacuum hose to the
PAIR
control valve.
12.Readjust
the idle speed with the
throttle
stop
screw.
IDLE
SPEED:
1,700
±
100
rpm
Disconnect
the
tachometer.
SECONDARY AIR SUPPLY SYSTEM ('05
and '06 California type, After '06)
SYSTEM INSPECTION
Warm up the engine to
normal
operating tempera·
ture.
Check
that
the secondary ai
r
intake port is clean and
VACUUM
PUMP
free
of carbon deposits.
tt~jjj~
Check
the
pu lse secondary air injection (PAIR) con-
trol valve.
FUEL SYSTEM
PAIR
CONT
ROL VALVE
AIRSUPPLY
HOSE
PAIR
AIR
I
HOSE
6-29

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