FE 501 2000 on keihin fcr 41 - jetting question.

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Joined
Aug 29, 2012
Messages
10
Hi. I have little problem with jetting my carb.

So i have

main jet 175
Starter (choke) jet 65
Pilot jet 42
Main air jet - 200
Pilot air jet - 100

Bike starts bad, i use hot choke, turns with e-start 15 sometimes 20 when bike is hot. When is cold, start better, but not so good...

yesterday i give

main jet 185
Starter (choke) jet 65
Pilot jet 45
Main air jet - 200
Pilot air jet - 60

and clip for 4 from up.

The spark is too black so - too much fuel.


the problem is = In this two combination i have problem wit start (in this 2 is better, but not so good) and when i go to 3/4 throttle is good, but form 3/4 to 4/4 bike make blaaaaaa (something like too much air) and this problem is also when iddling and use throttle. Sometimes he can off...

can somebody give me information which jet have in fcr 41 in fe 501?

Thanks a lot...
 
i add OBDXP and was good ;) i have question now...
Which needle can be best for me?
OBDVT ? or OBDTP?

KTM 525 SX RACING have original OBDTP.
EXC 525 have a OBDVT. Can be this?
 
for God's sake buy one of my jetting kits and stop being such a tight-arse!

http://www.ebay.co.uk/itm/HUSABERG-JETT ... 1039wt_699

I have a kit in the states I sent by mistake and offered up only two weeks ago at a very cheap price. If you're from the USA you can have that kit.

regards

Taffy
 
As an eBay Associate we earn from qualifying purchases.
I'm not from USA.. Sorry. Europe.

And sorry, im not "thight-***"...

Forum is for help another people, yes?.
 
that's right. the forum is for advice. hopefully good advice.

and now sir you've had mine :D :D

regards

Taffy
 
Hi Rafal

I can't help because always have used Taff's needles, but try to search here on the owners docs, there is some info about this subject.

:cheers:
ZAGA
 
starting and low throttle is usually helped by replacing the o ring on the slide. this is a wear item that needs replacing on a regular basis and will need to be replaced if you spray carb cleaner in the slide area. you can get thes from Sudco racing.
http://www.sudco.com/ the carb will not pull fuel through the starting circuit if the gasket does not seal anymore.
 

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