fcr

Greetings, I am wondering if anyone can explain the difference between the FCR MX 41 model 4125D which is found on the FE550's, and the FCR MX 41 4138D found on the FE650's. The only physical difference that I have noticed is a small diaphragm looking device on the side of the carb of the...

Hi, I have an '03 501 FE which currently runs with the Dellorto carb. I have been told on many occasions that a good modification is to upgrade to a Keihin FCR carb. Could anyone tell me what improvements it would be likely to give me and exactly what I would need to carry out the upgrade and...

Greetings all, Just wanted to give a heads up to all the berg owners with FCR carbs. There is an O ring on the vacuum release plate on the slide. This is something you may want to look at replacing every so often as a matter of maintenance. I just replaced mine and when I started the...

Hello everybody, its my first post here as an user, im reading sometimes here some useful help. But I have a problem wich I want to clear. I bought not long ago a keihin FCR 41 carburator, on ebay form USA. Now ive mounted it already on my bike but it doesnt run "smoothley" or just...

Hello guys,I read in owners doc about some rerouting that could be done in FCR from left side to right side about fuel connection(supply).My exhaust has very close contact with carb in this point,so I found it very interesting.Did anyone make this modification?Is it possible to do it in mk1...

Hi would anyone out there have the setup for a keihin fcr 41 for a berg fc600. The bike is starting and ticking over erratically but when throttle is opened, stalls. Any help would be greatly appreciated.

Hello bergers around the world , I wonder if aftermarket accelarator pump cover for FCR can improve performance of engine and works nice generally.I tried to fit one of them but when I install it in my 07 FS650e doesnt work.The engine increases RPM difficult and doesnt work properly.I...

i have had to renew my throttle plate on the keihin. if any of you have a used keihin off an early model you must watch for this! they crack around a circular dished area and the cost is £90 to renew.... the way to tell is i believe (not 100% sure on this!) that the underside distance...

Hi All, I'm getting sick of trying to start my 2003 400FE, I can start it easy enough from cold,several kicks and sometimes even on the E start. Problems start when its hot,it will stall,and will take up to 3/40 kicks sometimes,drains the battery after 3-4 trys(new last year apparently) and is...

Fitted an 41 Fcr to my 2002 650 Husa, but am having starting problems now. I got it started fairly easy, but it dies every time after a couple of seconds, if I touch the throttle it dies immediately. I've played with the idle screw from min to max with no difference. I finally kept it...

can anyone tell me if this thing will work on an 98 FC501

it's off a 06 kxf 450 (41mm with a 175 main jet). it's shorter front to back than my delo but it looks like it will slip into the rubber manifold on the head. the boot on the other end however will come up short. i wonder if a boot off an 03 or later berg will fit? otherwise i need to make...

Has anyone put a fcr on there 97 fe-400.

Last weekend took my Berg from 1000 feet to 7500, I only changed the MJ from 188 stock -> 178, seemed to do the trick .... it ran awesome, no backfire, good power range ... Question I have is , how do I get at the needle clip on the FCR carb? After I remove the top of the FCR carburetor...

i have the opportunity to buy a 37 mm FCR from a Yam 250. Would that make any sense on the 400? It's only 1 mm smaller then the dellorto 38 mm but probably a lot more responsive. Arjen

I borrowed a picture from Joe USA's gallery which shows the left side of the carb on his 04. There is a cavity with two screw holes that has an unfinished look to it. I found an exploded FCR diagram that does show a diaphragm, spring and cover that goes there. Apparently it is not used on all...

Hallo everyone! my first post in this site, Have been around and lookt on this site for a while and its the best Husa site around. Now I had some thing in my head that i need help with so i can sleep at night :? And its start with I was talking to Martin Lind (very nice guy) about his...

Hello all I started this conversion last year and finally fitted it a month ago ,I am running the following jets MJ 158 , PJ 40 ,1.5 turns out of pilot screw EKR needle on slot 4 I have made an adaptor for both the filter side and the cylinder head flange which I have made air tight using o...

One of these days I finally fit a Keihin Flat FCR on my Berg. The carb came from a CRF which as made the WEC (see the pics at my gallery). The man who as supplied to me, have informed that the carb as been tuned to give the best performance at the races. After I've fitted in my engine I open...

While snowed in, it's time to fiddle with things. I read about these two products on this site, and decided to buy them, and install them. I have had an issue with the accelerator pump ever since I removed the carb, looked into the engine side of the carb, worked the throttle and squirted myself...