Six different carbs?

[samaritan]

I was at the Stihl dealer today to buy a carb kit for my ms251c, he asked what numbers were on it, and said that there are six different carbs for that saw, does that make sense? and are they interchangeable?, he didnt seem to know, he said he needed to match the numbers on my carb to the right kit. I threw the old one away, and got one from Amazon to replace it, the saw wont run, the metering gasket looked bad, so now im looking for the right one. Im gonna replace it and hope it runs.

 

[lone wolf]

I was at the Stihl dealer today to buy a carb kit for my ms251c, he asked what numbers were on it, and said that there are six different carbs for that saw, does that make sense? and are they interchangeable?, he didnt seem to know, he said he needed to match the numbers on my carb to the right kit. I threw the old one away, and got one from Amazon to replace it, the saw wont run, the metering gasket looked bad, so now im looking for the right one. Im gonna replace it and hope it runs.

@HarleyT

 

[HarleyT]

The older ones were walbro, the newer ones are Zama, and the ones that have the primer bulb are different as well. You need a gasket, or a carb?

 

[Cliff R]

Did you buy a cheap "clone" carb on Amazon? If so the dealer isn't going to be able to help you. It would be best to buy a new carb for the saw based on the serial number of the saw.....IMHO....

 

[HarleyT]

Throwing away the carb is usually a mistake.

 

[pioneerguy600]

Throwing away the carb is usually a mistake.

So is throwing out the gaskets and diaphragms before getting the replacement kit, one needs the old ones to check against the new assortment of bits to make sure the replacements match the originals exactly.

 

[HarleyT]

So is throwing out the gaskets and diaphragms before getting the replacement kit, one needs the old ones to check against the new assortment of bits to make sure the replacements match the originals exactly.

I keep them for the part/pieces/screws,etc.. If you lose a tiny screw, you have to pay through the nose to get another one.

 

[pioneerguy600]

I keep them for the part/pieces/screws,etc.. If you lose a tiny screw, you have to pay through the nose to get another one.

In more than 60 years I have been wrenching I have yet to throw a carb away unless it was attached to a plastic fantastic POS, then the whole saw goes away.

 

[HarleyT]

In more than 60 years I have been wrenching I have yet to throw a carb away unless it was attached to a plastic fantastic POS, then the whole saw goes away.

 

[HarleyT]

Me too......

Carbs and dirty magazines...

 

[pioneerguy600]

I would keep the magazines longer than the POS plastic saws, they have come in with broken off screws that hold the carb on, owner wanted me to drill the screw out and rethread, not gonna happen, broke off screws that hold the muffler or stripped out threads, more costly to fix than purchase another.

 

[HarleyT]

I would keep the magazines longer than the POS plastic saws, they have come in with broken off screws that hold the carb on, owner wanted me to drill the screw out and rethread, not gonna happen, broke off screws that hold the muffler or stripped out threads, more costly to fix than purchase another.

You sound bitter......

 

[pioneerguy600]

You sound bitter......

Old.

 

[stihltech]

The serial number of the unit when looking up parts is getting more important all the time.

 

[pelhamjeff]

I don't know why there has to be 6 carbs that can go on one saw. If there were just 2, I would think there's a California carb and a rest of the world carb. With 6 carbs, there's probably a Red state carb, a new england carb, and carbs for 4 different regions in california.

 

[HarleyT]

In reality, the price list probably only shows 2 or 3.

 

[HarleyT]

The others look to be for the ms241, which I haven't seen around here.

 

[ZeroJunk]

I really don't think it matters on that particular saw. If the first four numbers are correct it will work fine, regardless of how many variations they show.

Now, the MS250 on the other hand is truly a can of worms. The adjustment screws are in at least three different places and if wrong will not line up with the holes in the housing to get to them. Then they put a nipple on some for a purge pump just to make it more confusing.
I see they put a purge pump on some of MS251's also. Oh, well.
Narrow that down to purge pump or no.

 

[samaritan]

The older ones were walbro, the newer ones are Zama, and the ones that have the primer bulb are different as well. You need a gasket, or a carb?

A metering diaphram

 

[HarleyT]

A metering diaphram

So you need a metering diaphram for the aftermarket carb? Or is it a walbro or zama?