Briggs 130212 4006-04 5hp Pulsa-Jet Diaphragm Cover Pitted

[allstar59]

i'm trying to get this flathead working and the diaphragm cover looks really bad. This is the first carb I've ever tried to rebuild and I can't find this cover anywhere which I think is the old style. Can some one tell me if the new style will work? The only covers I can find are the ones with an extra hole which is part # Briggs & Stratton 691713. here's a photo of my cover.

Thanks for any help

 

[minikenny]

You might be able to save it by sanding out the pits on a plate of glass.

http://www.oldminibikes.com/forum/briggs-and-stratton/59393-tech-trueing-diaphram-cover.html

On the second question, I think the new one will work but I don't know for sure. You would just have that extra tab hanging out not attached to anything. :shrug:

 

[allstar59]

Thank you for that link. I'll try it tomorrow , I don't have anything to lose because I don't think it'll work the way it is. I thought about sanding it but it never would have dawned on me to do it on something flat like glass.
Jim

 

[minikenny]

Hard to tell but the pits might not be too deep. Do it wet and use a figure 8 or whatever it takes to take the same amount off all sides. :thumbsup:

 

[OND]

Kenny's giving you some good info, post some pics when you are done with it .

 

[CarPlayLB]

It'll be fine! Sand it flat and run it! The other style with the extra tab will work for you too!

 

[allstar59]

Well I wet sanded the cover with 320 grit on glass and it looks pretty good.


Here's the carb I'm dealing with:




I read a few posts about throttle wobble and sure enough this one is fairly wobbly. I'm going to put it together this weekend and see what happens.

 

[buckeye]

That little trick should be Don each time you put a new diaphragm.
I remember some posted that most people over tighten the screws a slightly warps the plate.
Good to smooth it out to get the best seal you can.