I would like to get a fcr 40mm carb but its hard to find them, its for a z400.

 

try ebay there should be some on there for dirtbikes

 

this is where my carb came from https://www.sudco.com
it was set up for what mods I had done
I have a 41 fcr

 

That link doesnt work.

 

it works you have to type it in https://www.sudco.com

 

sent you a pm

 

cycleworksracing .com or goldenwestcycle .com without the spaces

 

Got this info from another site. You will have to look up the part numbers for the prices, I think the carbs around $250.

I have been getting quite a few PM’s lately regarding the Keihin FCR 40mm carburetor and installing it on a Z400. I have taken a few pics and written a small guide to help others with the setup and install.

To run this carb you need a few Honda parts. Order them from the folks at servicehonda for a good deal. www.servicehonda.com

1. Carb: 16100-MEB-671
2. Throttle Cable: 17910-HC5-970
3. You may also want to pick up a variety of jets including 42 pilot, 178, 180 and 182 main jets.
4* Honda thumb throttle Housing and Assembly: 15+ parts (best to buy on eBay)

*You can also use your stock Suzuki thumb throttle assembly by tapping it to fit the 10mm x 1.25 Honda cable.

note - the throttle cable mentioned above will work but needs to be trimmed. You trim the Black Cover and the spiraled metal that supports the cover (NOT THE ACTUAL CABLE) just the cover!!!! You are just increasing the length the cable can travel. Trim it right where above the adjuster bolt! you see where my bolt is all mangled??? thats where!!!! Here is a pic:



Once you get your throttle cable trimmed and installed make sure it pulls freely from all the way closed to throttle stop

The carb comes with a few extra features for the CRF450 that we don’t need or use. I put a vacuum cap over the hot start cable inlet and there will be an electrical connection for the TPS (Throttle Position Sensor) Just leave it alone and unplugged. This picture shows the hot start capped.



You also need to cap the back side of the Fuel Petcock, the vacuum hose that connects to the stock carb is not needed anymore and you don’t want dirt or any foreign objects getting in there. Here is a pic




Once you have your throttle cable and thumb throttle assembly setup and re-jetted the carb for the Z400 you are ready to install it on the quad. A good baseline setup for the jetting is 1.25 turns out on the mixture screw, #42 Pilot, 2nd clip from the bottom (closer to taper) on the needle, and a #180 Main Jet.

1. Remove your tank cover and side plastics.
2. Remove the gas tank
3. Loosen the clamps on the stock carb and remove it and the throttle cable.
4. Remove the rubber head to carb air boot with clamps loosened.
5. Work the boot onto the carb and tighten clamp (I have found this to me much easier to install and leave it on permanently. If you need to remove the carb just loosen the front clamp on the head and remove it with the air boot attached to the carb.
6. Install the carb and tighten the clamp on the head.
7. Hook up the airbox to carb boot, it will be stretch but will work and also will not go anywhere when tightened.
8. Once everything is tightened up good work the carb back and forth and make sure it will not loosen up under hard riding.
9. Now hook up your throttle cable and route it to the assembly if you haven’t already.
10. Install the gas tank and hook up the gas line. The FCR with a stock petcock needs to run in the PRIME position so fuel will fill the carb bowl.
11. At this time I would start it up and make sure it runs good. If everything is well finish putting on the plastics and ride!!!