Honda CRF450R 2006, Owner'S Manual

Page: 155 / 172

FRAME Remarks
Shock spring
Standard
Stiffer
Optional
Softer
Stiffer
Fork spring
Standard
Optional
Softer
The standard fork spring and shock spring
mounted on the motorcycle when it leaves the
factory are not marked. Before replacing the
springs, be sure to mark them so they can be
distinguished from other optional springs.
308.0 lbf/in (5.50 kgf/mm)
No mark
(factory products)
Red
paint
(aftermarket parts)
or
296.8 lbf/in (5.30 kgf/mm)
25.76 lbf/in (0.46 kgf/mm)
24.64 lbf/in (0.44 kgf/mm)
26.88 lbf/in (0.48 kgf/mm)
Jet needle number
(1/2 clip position
leaner than
standard series,
leaner only at 1/8
to 3/4 throttle)
NCVN
Ø2.725 mm
NCVP
Ø2.735 mm
NCVQ
Ø2.745 mm
NCVR
Ø2.755 mm
NCYN
Ø2.725 mm
NCYP
Ø2.735 mm
(standard needle)
NCYQ
Ø2.745 mm
NCYR
Ø2.755 mm
NCYS
Ø2.765 mm NCVS
Ø2.765 mm
CARBURETOR Remarks
Main jet
(Standard: #168)
Slow jet
(Standard: #42)
#158 – #178 (in increments of
2 or 3)
#38 – #48
(in increments of 2 or 3)
Jet Needles
Standard needle: NCYQ
Straight diameter: ø2.745 mm
Jet needle number
(standard series)
TOOLS Remarks
FRAME Remarks
Driven sprocket
Standard
< >: Drive chain links
48 Teeth, Aluminum.
<114>
Optional
Optional
47 Teeth, Aluminum
<114>
49 Teeth, Aluminum
<114>
Handlebar
lower holder
Standard 3 mm offset
no offset
Pin spanner A
Workstand
To adjust spring preload.
(two spanners required)
For maintenance
Gener
al flo
w char
acter
istics
Leaner Richer
(at 1/16 to 1/4 throttle)
168
Red
Blue
319.2 lbf/in (5.70 kgf/mm)
330.4 lbf/in (5.90 kgf/mm)
Pink
Silver
These parts and tools may be ordered from your
authorized Honda dealer.
60.61 mm 60.16 mm
2 scribe marks
(aftermarket parts)
3 scribe marks
Size
Jet needle number
Straight diameter (2.745 mm)
4 scribe marks
Technical Information
151
Optional Parts List