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Gas tank cap question

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Rob Achenbach

Member
Joined
Jun 16, 2020
Messages
21
Location
Lancaster, Pa
On the 129, inadvertently forgot to replace the gas cap one day and left it laying on the engine and then of course mowed it to shreds. Luckily, sort of, It’s the exact same size as a can of Oatey pvc glue. But with a small nail hole punched in the top to breathe, every now and then I’ll get gas all down the sides of the tank. Is a breather hole in the cap truly necessary? Do replacement caps have some type of breather mechanism built in? Any advice would be greatly appreciated. Thx
 

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Rob Achenbach said:
On the 129, inadvertently forgot to replace the gas cap one day and left it laying on the engine and then of course mowed it to shreds. Luckily, sort of, It’s the exact same size as a can of Oatey pvc glue. But with a small nail hole punched in the top to breathe, every now and then I’ll get gas all down the sides of the tank. Is a breather hole in the cap truly necessary? Do replacement caps have some type of breather mechanism built in? Any advice would be greatly appreciated. Thx
Click to expand...
1605665995605.png
 
The replacement caps have a baffle to keep the gas in the tank.

The last Kohler replacement I got just had a fiber washer with a hole at a different spot than the vent hole in the cap.
Not cheap, though.
 
kashaver said:
The replacement caps have a baffle to keep the gas in the tank.

The last Kohler replacement I got just had a fiber washer with a hole at a different spot than the vent hole in the cap.
Not cheap, though.
Click to expand...
Yeah, you gotta save up to buy one of those. ;-)
1605666143762.png
 
Not being smart"xxx" but some folks don't know...Without vent tank ends up in vacuum stopping flow of gas,engine runs out.I've had 3 that were plugged by muddobber wasps in the last few yrs.A poke with small nail and back to business.You learn a lot of crazy little things if you stay at it long enough....
 
Well, that is what I get trying to get a cap with my employee discount. I am thinking it was something like $12 WITH the discount.
 

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