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O-ring install issues

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mlawrence New Member Total Posts : 1 Scores: 0 Reward points: 0 Joined: 2023/06/28 21:10:52 Status: offline 2023/06/28 21:54:10 (permalink) 0 O-ring install issues Trying to fix a Craftsman T1000 lawn tractor for my elder neighbor. He's having issues with it starting and only running for a few minutes then dieing and surging in low idle. Thinking it's a fuel issue, I decided to remove the carb and clean it. Noticed that the fuel bowl o-ring was getting dry rotted so I bought an OEM MTD o-ring to replace it. Having issues trying to get a new fuel bowl o-ring to stay in place on a MTD/Huayi 4P90F carb while I put on the fuel bowl. The grove on the carb body is bigger than the o-ring. The bowl is a cast one not stamped. Any ideas on how to keep it in place without losing the integrity of the o-ring while I put on the bowl? post edited by mlawrence - 2023/06/28 21:55:55 Quote #1 1 Reply Related Threads
SRTsFZ6 Super Member Total Posts : 2063 Scores: 74 Reward points: 0 Joined: 2018/11/18 07:20:58 Status: offline Re: O-ring install issues 2023/06/28 22:33:48 (permalink) 0 The carb mounting area is slightly larger than the new O-ring, correct? If so, with the carb upside down, simply stretch it over the carb body. It's new, it'll stretch and then stay in place (put the bowl back on).. There's a very, very small jet located under the idle screw adjuster. That ALWAYS clogs and will cause surging.. Un-screw that screw, then they'll be a plastic spacer(usually). Under that you'll see another part (mostly plastic). To clean that jet I use a cut off piece of wire(from a wire brush). My carb cleaning rods won't go that small(and they do go small). Quote #2

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mlawrence

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2023/06/28 21:54:10 (permalink)

O-ring install issues

Trying to fix a Craftsman T1000 lawn tractor for my elder neighbor. He's having issues with it starting and only running for a few minutes then dieing and surging in low idle. Thinking it's a fuel issue, I decided to remove the carb and clean it. Noticed that the fuel bowl o-ring was getting dry rotted so I bought an OEM MTD o-ring to replace it. Having issues trying to get a new fuel bowl o-ring to stay in place on a MTD/Huayi 4P90F carb while I put on the fuel bowl. The grove on the carb body is bigger than the o-ring. The bowl is a cast one not stamped. Any ideas on how to keep it in place without losing the integrity of the o-ring while I put on the bowl?

post edited by mlawrence - 2023/06/28 21:55:55

Quote #1

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SRTsFZ6

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Joined: 2018/11/18 07:20:58
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Re: O-ring install issues 2023/06/28 22:33:48 (permalink)

The carb mounting area is slightly larger than the new O-ring, correct?

If so, with the carb upside down, simply stretch it over the carb body. It's new, it'll stretch and then stay in place (put the bowl back on)..

There's a very, very small jet located under the idle screw adjuster. That ALWAYS clogs and will cause surging.. Un-screw that screw, then they'll be a plastic spacer(usually). Under that you'll see another part (mostly plastic). To clean that jet I use a cut off piece of wire(from a wire brush). My carb cleaning rods won't go that small(and they do go small).

Quote #2

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