what is the issue with all the zama carbs i have had problems with on the ms 200T whats the fix are the new ones proven better can the old be fixed or not worth it?
ms 200T carb problems
- Thread starter lone wolf
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VA-Sawyer
Addicted to ArboristSite
I'd like to see some answers to this as well.
Rick
Rick
I asked the same question earlier in the year.
There's a fuel pump (Accelerator pump?) in them that goes bad. They just get worn out and cannot usually be rebuilt effectively because there is damage to the carb body.
I had the same problem, and bought a new carb off of Ebay. Voila.
There is an older carb without the pump that doesn't wear out as fast, but I don't have the number handy.
I hope that helps!
There's a fuel pump (Accelerator pump?) in them that goes bad. They just get worn out and cannot usually be rebuilt effectively because there is damage to the carb body.
I had the same problem, and bought a new carb off of Ebay. Voila.
There is an older carb without the pump that doesn't wear out as fast, but I don't have the number handy.
I hope that helps!
MR HALL tells me the new ones are fixed and should fit, prob run a lot snapier imho , stihl #1129 120 0653 it uses the snorkel setup for the intellicarb so you would need the snorkel stihl part # 1129 122 3300 ill.i h part 10, and drill a hole in the filter base to fit it that is if you dont have that type on a older saw.
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a 200T carb, the part that wears out, it's the brass plunger setup that rides off the throttle shaft, it pumps a squirt of gas to the main nozzle with the trigger from idle only. This one in the pic is worn and lets AIR direct to the main nozzle too
The accel- pump is another unnecessary crock of you know what. Same as the intelli-carb B.S. Jetted too lean for good low response, so they've had to add more clunky and troublesome moving parts in the form of the ridiculous accel-pump Which by the way, doesn't give any extra pep than a non-accel pump carb. And if people can't be bothered cleaning the airfilter occasionally then that's their problem. hahaha
The O-ring is what I blame for the air-leaks, close-up on this one, there's no tight seal, the O-ring is worn smooth and flush and seems limp with no spring to the rubber or whatever it's made of. Feels like rubber to me but could be nylon type stuff, maybe the new 200T carbs have better o-rings..
Also the carb alloy is harder than brass, the carbs alloy doesn't wear, it's the brass parts that wear down, not the alloy. Junk ethanol-laced fuel can't be much good for that o-ring either. I've never bothered, just thrown on non-accel carbs instead, but I reckon if you could find a replacement accel-pump O-ring, that 200T would likely run sweet again
The accel- pump is another unnecessary crock of you know what. Same as the intelli-carb B.S. Jetted too lean for good low response, so they've had to add more clunky and troublesome moving parts in the form of the ridiculous accel-pump Which by the way, doesn't give any extra pep than a non-accel pump carb. And if people can't be bothered cleaning the airfilter occasionally then that's their problem. hahaha
The O-ring is what I blame for the air-leaks, close-up on this one, there's no tight seal, the O-ring is worn smooth and flush and seems limp with no spring to the rubber or whatever it's made of. Feels like rubber to me but could be nylon type stuff, maybe the new 200T carbs have better o-rings..
Also the carb alloy is harder than brass, the carbs alloy doesn't wear, it's the brass parts that wear down, not the alloy. Junk ethanol-laced fuel can't be much good for that o-ring either. I've never bothered, just thrown on non-accel carbs instead, but I reckon if you could find a replacement accel-pump O-ring, that 200T would likely run sweet again
cjnspecial
ArboristSite Guru
Here's a write up some really cool guy did a while back:
http://www.arboristsite.com/showthread.php?p=1752506#post1752506
http://www.arboristsite.com/showthread.php?p=1752506#post1752506
you ever find out about the walbro
cjnspecial
ArboristSite Guru
I looked for on on ebay for a week or 2 and one never found one. Next time I stop in at the dealer I'll ask....never hurts to have a back up.
Lakeside posted the new zama carbs are much better than the old ones. This post is old so there may be some more info on how they have held up.
http://www.arboristsite.com/showthread.php?t=61272&highlight=walbro+020t
Lakeside posted the new zama carbs are much better than the old ones. This post is old so there may be some more info on how they have held up.
http://www.arboristsite.com/showthread.php?t=61272&highlight=walbro+020t
