carb
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ok i found a good pic of the carb on the accelerator pump. i got the carb set but the throtle won't go return to the idel screw. there seems to be a catch right before the screw. so when i give it gas the carb does not spit gas at the butterfly. in pic 2 you can see where the throttle gets stuck
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HI, i have found that there is 3 different springs that can go on the accelerator pump shaft from light to heavy also different accelerator pump materials . i found the pink colored one to be ok, i tryed a black colored one and had the same problem as you described with the plunger not going down (too tight in the hole) and operating the fuel enricher jet. i recently changed from a 38mm to a 40mm carb and had a huge flat spot that was caused by this, also the newer carb has a different jet in it compared to the older carb which i believe has a needle arrangement while the newer one has a spring loaded jet that seems to take more effort to make squirt the fuel through the jet. i have in fact used the bowl off the early carb on the 40mm carb and it all seems to be working a lot better realy good in fact . it could be the reason the other guy gave it the flick as it is actually nearly new but did not go to good untill i swaped the bowls and played around with it a bit to get it right . hope this helps cheers kev