I am by no means an expert but I have heard that some (not all) Zama's can be difficult to rebuild. Tillotson's are supposed to be good, but complicated.

It may come down to which model of the particular carb is on the machine.

Hopefully canguy, fish or others with more experience will weigh in.

Most OEM's use both Zama and Walbro. They want to keep an open pipe line with 2 suppiers in case one goes on strike or has some other loss of production.

My personal observation is that Zama has had more problems but no one is immune. They all seem to have trouble developing diaphragms and check valves which hold up well with some of the additives being put in todays emission oriented fuels.

Its got to the point that any carb rebuild has to include a blow suck check of all check valves. There are two in the purge system and the one in the main nozzle. Because of how many there are, stocking the check valves is just about impossible so if one has to be ordered, consideration has to be made whether it is better to just order a new carb instead.

Walbro... Although there were a few good zama's at first. Mostly on green machine pro trimmers.

Peace

I looked at the Echo's yesterday and they all had Zama's.

stripped threads,

Nice nickname, try a mower shop that supplies the pro's. Product tends to be on the upper price end. I have had luck with shindaiwa's purchased from dealers. The low end shindaiwa hedge trimmer does use a walbro carb.

Peace

Hi all
do you think that it is possible to easily fit a walbro carb on an engine wich was previously running with a zama carb ?
does the fixation screw's holes match between these two carbs ?

Thanks and good evening.

I like Bing!!

The equipment I have with the Walbro rotary carbs seem to run smoother than the other stuff. Good thing too as any adjustment is going to be next to impossible.

I was reading on Zamas Web site today that Stihl is in the process of buying out Zama. Deal is supposed to be finalized by Feb. 08. I've repaired 4 Echo leaf blowers in the past few days, 3 had Zama and 1 had a Walb. carb.

They are pretty much the same design carb. FWIW, Zama is supposed to be one of the world's largest family owned company's...