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Main jet and pilot jet size - 2007 Generic XOR 50

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Suzuki impulse GSX400X


Here is specs for those carbs
- AISAN AS27VW
I.D. No. - 04A10
Bore - 27 mm
Idle r/min - 1300+/-100 r/min.
Fuel level - 9.0+/-0.5 mm
Float height - 20.5+/-1.0 mm
Main jet - #94
Main air jet - 1.2 mm
Jet needle - 5B10-3rd
Needle jet - 2.60 mm
Throtlle valve - 11.0
Pilot jet - #34
By-pass - 0.8,0.8,0.8 mm
Pilot outlet - 10.8 mm
Valve seat - 2.5 mm
Starter jet - GS1 #60, GS2 #54
Pilot screw - PRE-SET (2 turn out)
Pilot air jet - 1.35 mm
Throttle cable play - 0.5 - 1.0 mm
Choke cable play - 0.5 - 1.0 mm

Aug 27, 2014 | Motorcycles

1 Answer

Factory Jet Sizes


Front cylinder carburetor:

·
112.5 Main Jet

·
17.5 Pilot Jet

·
(1) 0.020" thick shim washer under the needle

·
PMS setting apparently varies from bike to bike... but it should be 2.5 turns

Rear cylinder carburetor:

·
110 Main Jet

·
17.5 Pilot Jet

·
(1) 0.020" thick shim washer under the needle

·
PMS setting apparently varies from bike to bike... but it should be 2.5 turns

May 23, 2013 | 2000 Yamaha V Star 1100 Classic

1 Answer

Fuel line routing


Instructions

1

Fine tune your motorcycle before rejetting your carburetor. If it's still running too lean, you can replace the pilot jet as a first step
2

Remove the bowl at the base of the carburetor by unscrewing the screws holding it in place. Unscrew the pilot jet inside, but be careful not to strip it. The jet size will be on top.


5 Year/ unlimited mile warranty No up front core charge
www.Cylinder-Heads.com
3

Use a screwdriver to remove the main jet from the brass jet needle holder, which is also called the emulsion tube.
4

Put in a pilot jet that is one size larger. Replacing it with a jet two sizes larger will make your mixture too rich.
5

Tune the slow/idle settings before replacing the main jet. Replace the main jet with one size larger. The sizes are in increments of 5.
6

Put the bowl back on, and align the accelerator pump shaft and rubber boot.
7

Reinstall the carburetor on the motorcycle and retune it to finish the rejet procedure.

Jan 11, 2013 | 1998 Honda VT 600 C Shadow

1 Answer

Need to rejet 1999 xr250r for sea level


You will need to go down in # jet sizes on both the pilot jet ( low end ) and the main jet ( top end ) since the air is thinner at higher altitude you will need create more air than fuel. For example if you had a 340 main jet you would go with a 320 or a 325. and the pilot jet would also go to a lower #.

Jul 01, 2011 | 1999 Honda XR 250 R

1 Answer

What is the size of main jet of YZ125?


  • Main Jet: 410
  • Main Air Jet: 2.5
  • Jet Needle: 6BFY43-74
  • Needle Jet: S-1
  • Pilot Air Jet 1: #40
  • Pilot Outlet: 0.7
  • Pilot Jet: 40

Jun 05, 2011 | 2003 Yamaha YZ 125

1 Answer

I am putting some vance and hines pipeson my honda sabre what size of jets do i need


Tough question as you need to read the plugs after riding to determine to lean or to rich but normally two sizes up on the pilot jet and 1 size up on main would be good place to start if you get heaps of popping or back fire when deceleration your to lean so bigger pilot jet required
personally I would just fit the system and see where its at before you change jetting and realistically it would only be the pilot jet if adjustment needed - the main jet is pretty much wide open anyway

May 22, 2011 | 2011 Honda Sabre

1 Answer

Just bought a 2001 WR 426. Has an FMF pipe, no air box lid. Main is a #165 and pilot is a #42.these are stock jets according to shop manual. My elevation is 2500-3000 Ft. Any ideas on jetting?


Hard to give accurate info with out seeing the bike with jetting but I would suggest take a reading from the fuel air screw if the bike running better with the fuel air screw in carbi at 2.5 turns out or more then definitely increase pilot jet up 1 or 2 sizes if you get the bike to run well between one - two turns out on the fuel air screw that is where your jetting should be
I wouldn't be concerned with main jet at all - it should be fine for wide open throttle unless you feeling power loss when you open it right up
also if you are getting backfire or popping when de accelleration that also hints toward lean pilot so a size or two change in pilot jet would be worth trying

Jan 20, 2011 | 2001 Yamaha WR 426 F

1 Answer

2001 raptor 660r with k&n air filter and full Yoshimura exhaust I need to know the settings for the carburetor jets, needles, and pilot jets


will need to fit larger pilot and main jet
size will depend where you are as colder climate will need to be richer than warm climate, normally 1 size up from std on pilot and 2 on main

Aug 31, 2010 | Yamaha XT 660 R Motorcycles

2 Answers

WHAT SIZE MAIN JET AND PILOT JET ARE STANDARD WITH THE BIKE


Hi and welcome to FixYa,

On a 2003 Kawasaki KLX125, these are standards:
  • main jet - 145
  • pilot jet - 17.5

Good luck and thank you for asking FixYa. Happy Holidays.

Dec 18, 2009 | 2003 kawasaki KLX 125

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