Hello:
Some friends have the ZDzs 60 and 80, they choke easyly with the engine standar carburetor choke.
I have a ZDZ 40 and it does not choke at all. To get fuel up to the cilynder I have to use a starter for longer than deired time until gas drop out of the muffler and then the engine starts.
The following times the engine strat by hand at the first flip.
I guess the choke butterfly comes with a small hole where the system lose pressure and then the engine do not suck fuel from the tank.
Have somebody experienced similar situations with the ZDZ 40cc.
I dissambled the entire carb and everything was in good shape and almost brand new ( as the engine)
Any inputs will be interesting.

thanks

R.

I had a zdz40 that you could choke the life out of and it would not start. If it has a bing carb on it that may be your problem. The walbro carb fixed my problems. I also had a 80 zdz and it started easy.

Kent

hi, but carburetor runing very good, is only start engine

Hello:
I have been trying to helpt to riribarr, the actual problem is how to get wet the cylinder with gas to start the engine. When we choke it, it never sucks fuel to the cylinder, we have to prime it with a lot of fuel drops into the carb. ( rear carb)
Once the engine started the first time then the following starts are easy.
I thing that the little hole in the butterfly of the choke avoids to seal the carb enought to suck fuel to a "choke" level. I solve this very same problem in my ryobi 31 cc using a little piece of 3m adhesive tape to seal the little hole, then later when I used the choke the engine were flooded very well. In some other threads some guys has used silver solder in this hole to obtain a fully closed choke effect.
We only want to know if the "first start" is for all of tyou a hard and difficult job or this carb, in particvular, has something wrong or misstuned.

Thanks.
Tato.

K_HUNT:
Hi,
it seems that the 40ZDZ has a walbro carburetor, "BING" is another brand or type of them.???? I have heard about "ZAMA" carbs, that also comes in the RYOBIS.
Thanks

Hi tatolazo , yes bing is a type of carb that is on some zdz40s . If you have the walbro you have the better carb. I had a replacement walbro carb on my on my 40. It was still hard to start but ran good once it started. I soldered the choke hole shut and it helped some. I sold it and bought an engine that is easy to start.

Kent