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  1. XL
    Hello all I have had my bike for two years now and love it. But the last ride before winter hit 3rd gear on up felt like there was no mid range or top end. I did rejet from stock. according to clymer stock is 42pilot 112primary and 110secondary. It now has 45pilot 120primary and I moved 112 to...
  2. XR
    To improve starting, I'd like to take the carb back to the original (UK) settings. I have a manual showing Main Jet 142 and Slow Jet 52. However, the manual appears to be for USA models. Would UK models have been fitted with the same jets?
  3. XR Technical Specs
    To improve starting, I'd like to take the carb back to the original (UK) settings. I have a manual showing Main Jet 142 and Slow Jet 52. However, the manual appears to be for USA models. Would UK models have been fitted with the same jets?
  4. Dominator / FMX
    Hi there, I have a 99' fx650 which I purchased to refurb and modify. I do not know how it ran before it was dismantled. It was only started. I have now rebuilt after refurb and I'm having trouble with engine hesitation with throttle open. I have put a larger main jet (175) as it has a custom...
  5. Dominator / FMX
    Hi All, I was wanting to get rid of the air box and put a K&N filter or similar on and wanted any advice on size, type or shape. As you can see from the attached it must be possible. Also probably need re jetting so again any or all advice welcomed. BTW K&N were less than helpful when I asked...
  6. XL
    Hi all just brought a xl250 degree and have got a running problem which is u cant go flat out as it cough and splutters (getting to much fuel) as when i take the air filter out and side panel off runs absolutely fine but if i leave air filter out and just put side panel on it starts to cough and...
  7. Dominator / FMX
    Has any one got a pilot jet for a carb fitted to a RD02 to hand, or happen to know the length? Just stripping the carb and the current pilot jet that was fitted is 24mm in long, however the refurb kit for the carb came with one that was 28mm long. Any clues on which one is correct? The 24mm...
  8. Dominator / FMX
    Hi all. Stripped and cleaned my carb and thought I’d check the jet sizes etc. On the slow jet was the number 55. Which I understand is quite large! However I cannot find any size on the main jet only the letters CBT ???? Is that just a model fitment number or do these letters correlate to a...
  9. Dominator / FMX
    non standard air filter and exhaust (nx650 1999 Keihin VE carb) , hesitant acceleration up to 1/4 throttle , above that ok . all points to needing larger pilot/slow jet but already have gone from standard 50 to a 65 . a lot better but still not smooth . Anyone think ok to go even bigger on slow...
  10. Dominator / FMX
    Set to with the debaffle today. Cut the end off the two baffles so I could get 38mm hole saw in. Cut the baffle out and then welded a 42mm piece of pipe onto the hole so it looks a bit tidier. Gave it all a blast with some black vht paint and she sounds like a good un. Just got to swap the main...
  11. Africa Twin
    Hi I have a XRV RD04 1991. Reading all service manuals and visiting all websites in the world, don't clarify which needle jet holder goes where. One have 6 holes - one have 10 holes. My logic tells me, that the one with 10 holes is in carburettor 1, since its jetted a little larger than...
  12. Dominator / FMX
    Hi all, so Iv'e replaced the air box with a Ramair pod filter and fitted a 2 into 1 exhaust. The bike starts ok but as it warms up it coughs a bit, almost like a missfire, can't quite decide if the cough is back into the carby or through the exhaust. Can anyone tell the go to jet size for a...
  13. Africa Twin
    Hi! I'm struggling (failing) to find throttle slides for RD04 anywhere, anyone know. Do i have to search for it using any particular measurements? not finding anything when searching for slides for RD04!? does the RD07's fit? Also looking for a main jet needle. Appreciate the help
  14. Varadero
    Do I need to re-jet the Varadero if I changed the original slipons by an aftermarket ones? thanks
  15. Africa Twin
    Hi - running standard carbs and airfilter but with very free flowing (fekin loud) exhaust - standard jetas are 118f 122r - whats the best guess to go up to? Put the 122 on the front carb and get a 125 on the rear? Wemoto only do them in .05 increments so it would have to be that or get 2 new...
  16. Africa Twin
    Just need someone to confirm correct positions of needle jet holders on RD04. There is 3 hole and 5 hole, so which one goes to which cylinder?
  17. Dominator / FMX
    Hey NX650 from 1988. Have a jet kit in the mail and planning on doing Dave's mod. I wanted to take the carburetor apart and clean it up before hand, but having trouble getting two of the screws in the float chamber out - seem very soft and I don't want to ruin them. I have PH and PZ...
  18. Dominator / FMX
    As I fitted a Wiseco hi-comp piston to my Dommie, and I'm considering exhaust options (XR headers, 2 into one, different silencers), I wondered about jetting, and also about 'Dave's mod' which I've seen mentioned a few times here but searches yield nothing. So, can anyone point me to 'Dave's...
  19. XR
    Hi has anyone used a Mikuni vm 32 On a xr250 . Need an idea of jet sizes etc .
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