loose carb bottom

[jacksel]

I have a MA-4-5 carb on my RV-6. I recently noticed the bolts connecting the 2 halves of the unit have become loose. The anti-rotation washers are still in place but somehow all the bolts are a little loose. It's possible to jiggle the whole bottom half of the carb. Do anyone sell a kit for repairing this sort of problem?

[Kyle Boatright]

Originally Posted by jacksel

I have a MA-4-5 carb on my RV-6. I recently noticed the bolts connecting the 2 halves of the unit have become loose. The anti-rotation washers are still in place but somehow all the bolts are a little loose. It's possible to jiggle the whole bottom half of the carb. Do anyone sell a kit for repairing this sort of problem?

I've seen that. My experience was that all you need to do is buy 4 new tabbed washers, disassemble, then reassemble using the new washers.

[Tbone]

I believe that there is a SB for that issue. You should check their website.

[snopercod]

Originally Posted by Tbone

I believe that there is a SB for that issue.

Yes. It's Marvel Schebler SB-17 from 2010. Those screws are supposed to be checked for tightness every 100 hours...which reminds me

[YellowJacket RV9]

When I was watching mine get rebuilt, the guy mentioned that many times people don't properly engage the tabs enough to stop the heads from rotating. He also emphasized to position the anti rotation tab that points downward so it can't rotate counterclockwise past the corner of the carb, it it should already be rotated as far ccw as possible.

Chris

[Fred.Stucklen]

We just had this happen to a PA-28-180 on the field, twice within 10 Hrs. Finally took the carb down, did what the SB required, but also put the screws back in with Locktite...

Originally Posted by jacksel

I have a MA-4-5 carb on my RV-6. I recently noticed the bolts connecting the 2 halves of the unit have become loose. The anti-rotation washers are still in place but somehow all the bolts are a little loose. It's possible to jiggle the whole bottom half of the carb. Do anyone sell a kit for repairing this sort of problem?

[fixnflyguy]

I had this issue on my -4, and aside from the above posts, the carb gets alot of side-to-side movement from the snorkle of the FAB if it has a very tight rubber seal at the front end. The engine moves around from torque and start-up/shut-down. I had to do a little re-work of the seal on mine to allow a bit more flex in the seal.

[jpowell13]

It happened to me too. I was getting engine hesitation when I advanced the throttle and deiseling on shutdown. Now, I reach into the air inlet with my fingers every preflight to make sure the air box doesn't wiggle due to a loose carb bowl. John

[snopercod]

Originally Posted by jpowell13

I reach into the air inlet with my fingers every preflight to make sure the air box doesn't wiggle due to a loose carb bowl.

May I steal your idea?

[jpowell13]

Please do Snopercod