PZ27 PZ30 carburetor idle throttle problem fix

The motorcycle I bought from a kid had an idle and weird throttle revving problem, I eventually noticed the I inside key notch was sheared off and causing the throttle cable slide to twist...

[tdub]

@Reddogmr57 I want to thank you for this video. I had a problem where my DONGFANG250 bike would not throttle right. I was trying to support from the people I got the bike which would take time until I came across your video. It saved me alot of time and headache. I tested it out yesterday and to much success it works! Thanks again sir.

[Community-Action]

I have the exact same carb with the exact same problem. I used a steel nail cut down that was as wide as the hole and then trimmed at the end to fit in the slide slot. Worked well with a little JB weld to hold the nail in place. The head of the nail sits nicely on the end and won't let it drop into the carb under negative pressure

[RockAnAhardSpot]

The guide pin fell out, hope it didn't suck into your motor man.  I came here looking for what people use this carb for, i was thinking i might get it to work on a HM80.  but anyway, that plans solid that you have there but the material you used isn't real great. for one thing it's square.  the guide pin would be better and hang up less if it's round and Brass. also the hole you made can be filled with the back end of the round brass guide pin.  if the guide slot on the cylinder is smaller than the pin you chose you can file it round wise and leave the back of the pin to tamp int the hole, polish the filed pic b4 installing. the new pin being round and brass will not snag or hang up.   anyway, Just thought i'd throw my 2 cents in. LOL  hope it works out for you however you do it. 

[xavidavidson]

cutted off springs allways spins when compress, you would need two plain surfaces on the spring to avoid spining. XD

[MrMua]

What's size is the air filter on that carb

[arrogantstallions]

Sir what's the stock main jet and pilot jet of this carburetor ?

[holdXtoshoot]

i noticed i had this wery same problem yesterday when boltong a new carburuteror on. the guide was also missing on mine and it got sucked in the motor i think.
i am not worried of it since ot is just hot gkue or somekind of soft plastic
i just drilled a tiny hole trough the hole and put a screw on it just so the tip of the screw works as a guide and barely came trough :)
works perfect now.
someone should inform keihin about this. seems to happen to a lot of people with these carb's

[garybrady]

Ahhh id just spend the 20 bucks on a new carb