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#Post#: 91136-------------------------------------------------- |
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Mac335 (Poulan 2250) replacement carb - type issues |
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By: Le Maisonniau Date: February 10, 2025, 2:21 pm |
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[attachimg=1] |
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Hi Guys, I have a trusty Mac335 that I have had from new (25 |
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years at least) |
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I need to upgrade / change the carb - the currently fitted unit |
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is original Walbro wt391, I suspect the diapraghm has gone (not |
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stripped it down yet) |
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I purchased a new carb kit which states is is good for a range |
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of Mac's, Poulan's etc. mine included, BUT the orientation of |
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the choke connection is almost upside down compared to the |
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original, I managed to fit the carb by turning the choke lever |
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upside down (it worked for that purpose) however when fitted the |
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air filter housing assembly just fouls the throttle cable. |
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it is not possible (that I can see) to rotate the end of the |
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shaft. |
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I am thinking that my solution is to use a service kit and put a |
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new diagphragm on, |
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Any hints tips most welcome, any pointers to a 'proper' orignial |
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too would help |
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In the Pic the WT391 is on the left (original carb) |
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#Post#: 91360-------------------------------------------------- |
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Re: Mac335 (Poulan 2250) replacement carb - type issues |
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By: Chainsawrepair Date: May 22, 2025, 8:15 am |
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I would try kitting the oem carb as the one with wrong set up |
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looks aftermarket. |
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Poulans walbro carbs take to rebuilds with kits most times. |
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I know some poulan used cable and some linkage. Could be the |
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difference in them too. |
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#Post#: 91361-------------------------------------------------- |
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Re: Mac335 (Poulan 2250) replacement carb - type issues |
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By: Le Maisonniau Date: May 22, 2025, 12:38 pm |
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Hi |
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In the end the best (only) solution was a carb kit, It was a |
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steep learning curve finding that afer market carbs are a |
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complete waste of time and money. |
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My mac now has a new lease of life with its original carb |
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service with a kit. |
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Unbelievable how many after markets carbs there are out there, |
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quoting an original Walbro part numbers and the carbs are |
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NOTHING like. >:( |
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