Leaking gas from carb

[rookieboater59]

Greetings all <br />I have a 7.5 gamefisher(mdl#217-585840) which has that tecumsah engine and having problems setting the float carb. Every time I turn the gas valve on gas goes through the carb and leaks out, I have set the float with a 5/16 dia. drill bit like the manual says but yet it always leaks.<br />My question to all you outboard whiz heads amI doing something wrong with setting the float??<br />Being very new to this hobby of boating I know I missed some steps so if any of you can shed some light on this subject I would be most appreciative!!

 

[CATransplant]

Re: Leaking gas from carb

You're probably setting the float OK, if you're following the manual. You could, however have a bad needle and seat, or a piece of crud between the needle and seat. Either will cause flooding.<br /><br />Also, if the float is full of fuel (hollow metal or plastic) or fuel-soaked (cork), that will do it, too.<br /><br />I suspect the needle and seat. Remove the seat and needle, and inspect both. If there's any visible wear, replace them. To make sure there's no crud in there, blow the seat out with compressed air.<br /><br />If it were me, I'd just replace them on principle, if I could get new ones. If it's a Tecumseh engine, you should be able to get replacements at any small engine repair shop, or from a NAPA auto parts dealer. Take the old set in with you, just in case there's no listing.

 

[CATransplant]

Re: Leaking gas from carb

More info for you:<br /><br />If you go to www3.sears.com, you can put your model number in, replacing the hyphen with a period. When you click GO, you'll go to another page. Click Continue, and you'll see parts breakdowns by assembly, with both parts lists and exploded views available.<br /><br />They have the parts available. I was very impressed with their service. If only the other outboard makers had such a good parts system online.<br /><br />So, if you need a new needle and seat, you can order it up, or a float, or anything else.

 

[rookieboater59]

Re: Leaking gas from carb

Ca I think I replaced the needle & seat since I bought a carb rebuild kit from discount marine parts about a month ago but I'll ck it out and make sure its cleaned out. Thanks for the info

 

[CATransplant]

Re: Leaking gas from carb

OK. Let me ask you a question. You say you set the float using a 5/16" drill bit. Where did the manual say to put that bit, and did the float setting take quite a bit of bending to make it set at that dimension?<br /><br />The reason I ask is because that's quite a large bit for float setting. I'm not saying it's wrong, but I'm curious where they had you put the drill bit.

 

[Paul Moir]

Re: Leaking gas from carb

I thought you were supposed to use an 11/64 bit?<br /><br />I could be wrong though...

 

[CATransplant]

Re: Leaking gas from carb

Just a silly 1/64" difference, eh? I don't think that would make the difference in flooding or not flooding.<br /><br />What I'm questioning is if there might be a mistake in the manual. I looked at the parts blowup of that carb and, although I can't see the mounting for the float, I also can't see where you'd get a 5/16" drill bit between the float and the carb base.<br /><br />I don't know, since I haven't actually seen this tecumseh motor.<br /><br />Apparently the writer's motor is flooding badly. Perhaps the needle is never closing. I'll bet if I had the carb in my hand, I could get it fixed post haste, but it's hard at long distance.<br /><br />If gas is pouring out of the carb, as the writer claims, then my bet is on either a defective needle and seat, or a grossly malajusted float.

 

[rookieboater59]

Re: Leaking gas from carb

Hey guys it say here in the intertec service manual 11th edition(eska3,3.5,4.5,5,5.5,7 &7.5hp)section float level may be checked by placing a number 4 drill bit(0.209 inch or 5.30mm) between the float and carb body. I think that's how I set it.<br />Ca I think you right about the needle I might have overlooked changing it or it needs adjustment.<br />Did'nt know that my dad's friend used to be a mechanic in the shipyard so he said bring it over and we'll get it running soon.<br />Thanks again for the intrest on my ob problems.<br /><br />Wes

 

[rookieboater59]

Re: Leaking gas from carb

FYI I just remembered that according to the carb specs. it called for a 11/64 bit. so I stand corrected and sorry for the mis-info I posted earlier but thats why I'm a raw rookie while you guys are the grizzled vets so to speak.<br /><br />Wes

 

[Paul Moir]

Re: Leaking gas from carb

Grizzled?? <br /><br />CATransplant - 11/64 is 1/64th away from 5/32, not 5/16. I'm not really sure it's possible to stuff a 5/16 in there anyway.<br />But no matter, if Intertec says #4, go with the #4 bit (appx 13/64). I'll bet 1/32 isn't going to matter much anyway. I just thought you were way out.

 

[CATransplant]

Re: Leaking gas from carb

You mean 11/64 isn't the same as 11/32? Silly me!<br /><br />I didn't think you could get a 5/16" bit in there, either. Hope it gets running for rookieboater59. <br /><br />Seems like a lot of the problems with these off-brand motors ends up being something simple. I think many of them are very low hour motors, like the 5hp Clinton-based Sea King on the back of my boat. Very little work was needed to make it run just fine. For $50, I'm a happy guy, even though I'd prefer a Zephyr.<br /><br />On that note, there's a very interesting thing on eBay right now for a LightFour. It's a military spare parts kit, including a brand new magneto and flywheel, a new carburetor, plus lots of small parts. All in a wooden box with the original military stencils on it. It's for a model 4375, a 1943 war production 9.7hp model. I'm thinking the parts would probably fit the early post-war models, too. I'm sure these parts are all unobtainable in new condition.<br /><br />It's a new listing, and I expect it to bring way too much money from some AOMCI member. Too bad. There's an old 1946 9.7 LightFour listed right now, too, with no bids. Tempting stuff, though. A guy would have to join AOMCI and show up at one of the wet shows with a neat old boat.<br /><br />Anyhow a search for "lightfour" will pop it up.