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Hi Rivets, Engineman, and all,

Just to refresh my situation from http://www.lawnmowerforum.com/small-engine-mower-repair/10709-need-shot-gas-into-choke-start.html All went well. :thumbsup: I seem to have a little bit of a leak from between the gas tank and the carb. :thumbdown:

When I cleaned out the carb in my post above I replaced the gasket in between the tank/carb. There seems to be 3 screws that holds them together and they are tight. Perhaps there is some debris that I didn't remove off the tank. In any case, when I remove this and find that there is debris I will clean it off, but will it be an issue to ensure no leaks with a silicone gasket material along with the OEM gasket?

Thanks for the replies.

You do not want to use any sealer, It could plug thing up...
Clean and dry on a flat surface will seal it properly.... :smile:KennyV

KennyV said:

You do not want to use any sealer, It could plug thing up...
Clean and dry on a flat surface will seal it properly.... :smile:KennyV

Click to expand...

Thanks Kenny ! If it doesn't work any alternative suggestions?

Is there a screw inside the throat of the carb that "also" mounts the carb to the tank?

chance123 said:

Is there a screw inside the throat of the carb that "also" mounts the carb to the tank?

Click to expand...

No, only 3 from the top. One of which has a clip to hold the fuel line. Do you have a diagram pointing to this screw?

articaine said:

No, only 3 from the top. One of which has a clip to hold the fuel line. Do you have a diagram pointing to this screw?

Click to expand...

Well sometimes there is a screw, and sometimes "this screw" is actually the screw that mounts the air filter to the carb. If attempting to start with the air filter screw off will allow excess fuel to enter the engine. If this is the case when starting with the air filter off, always screw that screw into the carb

You could try to double the gasket. Sounds like the tank might be warpped.

Rivets said:

You could try to double the gasket. Sounds like the tank might be warpped.

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Thanks. Will try it.

Rivets said:

You could try to double the gasket. Sounds like the tank might be warpped.

Click to expand...

Rivets,

Finally got around to placing 2 gaskets. It seemed to make things worse, more gas leaks out. How would a gas tank get warped?

Any suggestions? Silicone is no good?

If you feel you need to use a sealer...
Try something that will be tolerant of gasoline ... permatex Aviation#2 or permatex right stuff.
Anything else is going to dissolve sooner or later causing all kinds of grief... today's gas has a lot of additives that will eat most things up...

Thin steel can easily warp... If you place a flat edge over the surface, how much gap do you see?
:smile:KennyV

KennyV said:

If you feel you need to use a sealer...
Try something that will be tolerant of gasoline ... permatex Aviation#2 or permatex right stuff.
Anything else is going to dissolve sooner or later causing all kinds of grief... today's gas has a lot of additives that will eat most things up...

Thin steel can easily warp... If you place a flat edge over the surface, how much gap do you see?
:smile:KennyV

Click to expand...

Come to think of it when I bought this thing and took it apart to service there was only one gasket between the carb and intake. That could of warped the tank.

Yeah I don't want any grief in the future. If I don't use any sealer and just use one gasket, whats the best solution? I don't think I want to spend the money for a new tank.

How much gap is there when you check with a flat edge along the mounting place? :smile:KennyV

articaine said:

Rivets,

Finally got around to placing 2 gaskets. It seemed to make things worse, more gas leaks out. How would a gas tank get warped?

Any suggestions? Silicone is no good?

Click to expand...

Rivets, the 2 gaskets did not cause the increased gas leak. First time I noticed some gas seepage, but the 2nd time was after I had replaced with 2 gaskets. When I was replacing the 2 gaskets I checked the cover screws for the diaphragm and they were tight. This time when I removed the gaskets to check for any warping I noticed that the screws for the diaphragm cover were loose! I tightened them. I haven't run the mower to check for any seepage.

KennyV, the gas tank was checked with a known level plane and there was no warps in the tank.

So, my question now is should there be any leakage around from the diaphragm area from normal use? I've read somewhere, not this forum, that one should level the surface of the metal contacting the diaphragm with sand paper. B & S, specifically state do not. :confused3:

Since I've tightened it and gas should not flow out like it did, I think if there is no solution to the seepage I'll just deal with it...but I feel it's not the norm.

KennyV said:

How much gap is there when you check with a flat edge along the mounting place? :smile:KennyV

Click to expand...

Ran the mower, and there is some seepage from the diaphragm cover. If there is not a solution or if it is not a big deal then I will just leave it alone. Ima retighten the screws if it leaks more.