This could be that the slide is wide open or the cable is too tight or routered wrong or the carbie hope this helps
SOURCE: replaced throttle cable on pw50 but can't seem to get it adjusted
If I understand your problem correctly this may help. There should be a spring just a bit smaller diameter than the slide that mounts between the top of the slide and the bottom of the carb cap. No spring means no snap-back. I am assuming there are no kinks in the cable and the cable was routed correctly when installed. Lots of times if the cable is not routed properly the gas tank will "stretch" the cable when the tank is re-mounted. Route the cable properly and the problem goes away..... As far as the slack in the cable, there is a an adjusting screw on the top of the carb (where the cable ends) and an adjuster screw at the hand throttle also where the cable ends. Some bikes have an extra adjuster mid cable but I don't think yours does, (working from memory here). If none of the above work then my guess is that the parts counter handed you the wrong part.
SOURCE: will only run with full choke and absolutely no throttle.
Carbs gummed up. Need a serious cleaning or a full ruubers replacement/rebuild kit. Gas turns to gummy when left stting in the fuel bowls.
Use a couple of cans of Sea Foam.. best stuff in the world.
SOURCE: hot start lever siezed in plunger of crf 250 x carburettor
have had the same problem many times. spray carb cleaner into hole where the brass plunger is located give it a little time to let the cleaner work. put some force on the cable it may come out if not remove the cable at the other end so you can remove carb to work on it
SOURCE: CRF230 - Throttle won't turn.
The overflow problem is a carb float being stuck open. Turn off the gas and drain the offending carb(s). Next, turn the gas back on and sharply tap the float bowl with the plastic handle of a screwdriver as the fuel bowl refills. The goal here is to vibrate the float to free it up. If doing this process a couple of times doesn’t free the float I would remove the offending carb(s) and clean with a spray carb cleaner. By the way, Check the float, it could be filled with gas instead of air. Clean the air filter then re-mount carb(s). Next, remove the water trap bowl at the bottom of the petcock, (gas valve). Dump it, clean it and re-mount it, ( not all bikes have a water trap bowl ). Install an in-line fuel filter.
The lack of movement in the carb slide is either a bad cable or the the carb is a CV model. The slide on a CV carb will not move unless the motor is running. Start the motor. Does it speed up normally when you twist the grip? If so, then there is nothing to worry about.
SOURCE: 1995 Yamaha XV 250 Virago Is there a need to
The problems with a plunger style choke happen when the rubber on the bottom becomes deformed and does not seal or the spring does not push the plunger down hard enough, or the cap breaks so the plunger is not pushed down hard enough. If you put your finger over the hole and the bike runs properly your bike is running on choke. You have to block the hole deep inside the carb to shut off the choke. I assume the original problem was that the bike would not idle .If this is the case, take the carb apart remove the slow jet and clean the jet and the carb body out so fuel will flow at idle. This should fix your no idle problem.
Testimonial: "Thanks for the info. The original problem was the bike would idle okay, but stall as soon as gas was applied, I suspected a gas flow problem. I shotgunned a bunch of things including new petcock value filter in tank, taking carb off and cleaning jets, float bowl, and various orifices, replaced intake manifold (thought it could be a vacuum leak from some cracks seen), plus some other things I'm probably forgetting. Each change seemed to fix problem for a while, but it would always return (problem was always intermittent). Recently I noticed just moving the choke cable (without changing choke setting) was causing bike idle to change, then it died hard and would not start again after I fiddled with cable a bit - tried ether, etc. Since it fired right up after taking choke cable off I ordered a new one, still waiting for it, hopefully that'll fix it. I couldn't find anyway to adjust choke cable though manual debug section claims it can mis-adjusted. If this still fails I'll probably take the carb off again and try cleaning again. Been an intermittent thorn in my side for a while now. Thanks for the suggestions!! "
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