Keihin CV Carburetor Part Numbers
Jets and Needles |
Here is a list of Harley-Davidson part numbers for Jet
Needles, Pilot Jets and Main Jets that can be used in tuning the Keihin CV carburetor.
Jet Needle
Part Number |
Jet Needle |
|
27175-90
27176-90
27178-90
27179-90
27184-92
27186-92
27280-92 |
N72R
(CA Only)
N72S
(CA Only)
N86F
N86E
(CA Only) |
Rich
V
V
V
V
V
Lean |
| 27094-88 |
1988 1200 Sportster |
|
Pilot Jet
Part Number
(Slow Jet) |
Jet Size |
|
27165-90
27170-89
27171-89
27281-92
27117-88 |
48
45
42
40
35 |
Rich
V
V
V
Lean |
Main Jet
Part Number
(High Speed) |
Jet Size |
|
27105-88
27185-90
27114-88
27090-89
27115-88
27116-88
27152-89
27154-89 |
200
185
180
175
170
165
160
155 |
Rich
V
V
V
V
V
V
Lean |
Other Useful Parts
If you misplace the idle mixture
screw in your Keihin CV carburetor, there are actually two different sources for
replacement parts. |
|
This idle mixture needles for CV and butterfly
Keihin carburetors allow easy adjustment of the idle mixture. It is a direct replacement
of the OEM needle. The knurled adjustment knob makes setting the idle mixture a snap.
For more information visit the Johns
Motorcycle Parts site.
Bike Tech has found this to be a handy little
part to put on a CV carburetor. Installation of this idle mixture needle is simple. Just
remove the old needle, making sure the spring and O-ring are removed along with the it.
Place the O-ring and spring on the JMP Idle Mixture Screw and place it in the carburetor.
Making idle mixture adjustments can now be easily made while the engine running and
without needing a screwdriver. |
|
H-D has used Keihin butterfly and CV type carburetors
since 1976. The same injection molded fuel inlet elbow is installed on both types. The OEM
elbow breaks easily, can be affected by today's fuels and has a restrictive flow rate.
Johns Motorcycle Parts
fuel inlet elbow is
made from brass and flows 40% more fuel. The increased flow easily keeps up with the
demand of a modified engine. The elbow is designed to be a direct replacement for the OEM
item. |
| If you want to improve the
throttle response from your OEM CV carburetor for about $3.00, replace
the vacuum piston spring with the spring from the Screamin Eagle 44mm
CV (part number 27728-99). Stock spring tension is 200/290 grams
versus 130/210 for the new spring.
Provided by Dave Morse |
| The part number
for the Screamin Eagle 44mm CV carburetor Tuner's Kit is #27419-99
Provided by Dave Morse |
| Your neighborhood Kawasaki dealer has parts for the
CV-40 carburetor. Seems a 1997 Vulcan Classic 1500 uses the same carburetor as
Harley-Davidson. Kawasaki Part Numbers are as follows:
Pilot Air Screw, Part # 16014-1082
Pilot Screw Plug, Part # 92066-1051 |
Threads messed up for the idle mixture screw?
In case someone uses a screwdriver that is a bit to wide and messes up the threads for the
screw, a 6mm x .75 pitch tap will clean up the threads nicely. Make sure to ground the end
of the tap flat so it does not damage the screw seat. (This information courtesy of Rich
White)
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