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To BE...or Not To Be.. problems an easy Fix?


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Posted
[img]http://a6.cpimg.com/image/98/A1/51073176-8b35-027801B0-.jpg[/img] Stuck my $40 26 HP Briggs in a 5216 today to see if it runs or not. Model 446777 Type 0244 E1 Code 040129Y6 It runs but has some issues needing resolved: Issue #1- Engine starts and runs great. At Mid to higher RPMs it surges terribly. Issue #2-Blue flames come out of one exaust port and not the other at anything higher than idle speed. Cant think it could be , but Is this normal? Issue # 3-Exaust would have to be custom built on this and I would have to make some manifolds for it as there were none with it. ( this is how I know about the blue flame;)) Issue # 4- Crankshaft end is 1 1/8" diameter. This screws up using the 1" diameter drive pulley set that originally came on the tractor. Another custom build job I'm afraid. I can handle #3 and #4 with no sweat. Its # 1 and # 2 that could cost me money, but I dont know what I'm looking at in regards to those problems. Especially on a engine thats only a year old and does not appear to have been used for more than a few hours if that. Its real clean and the air filter is very clean as well. If it were not for just a few strands of grass sitting on the bottom I would have a hard time believing its been used at all. Obviously it was on a Craftsman tractor of some sorts as the shroud says Craftsman on it. Any body have any ideas as to #'s 1 and 2?
Posted
Sam, Some ideas: Sounds like a lean condition or a governor problem. An exhaust system may help the problem. With the newer engines and their non-adustable carburetors it could be some crap in the fuel system or carburetor. Have you checked the air filter? That's all,
Posted
Would seem kind of a shame to waste so much HP in a small frame tractor. You'd never be able to do anything with it that would pull that size engine. I'd also say something is causeing a lean condition in the carb. Maybe a leaking intake gasket on the blue side. Surgeing is a sign of lean idle mixture on most carbs. You might check for a restriction there. With so many engines being the same for horizotal/vertical, you might wate awhile and run across an oil pan, correct intake and gov. assembly and convert it to a horizontal engine and have something for a project tractor later.
Posted
I believe this is a dual feed carb of the new emmissions type.The blue flame is lean exhaust.A misfire.The main jet on one side i would say is restricted and that is your surge and not the governor.It is not adjustable and must be disassemabled.
Posted
quote:
Originally posted by D-17_Dave
Would seem kind of a shame to waste so much HP in a small frame tractor. You'd never be able to do anything with it that would pull that size engine. With so many engines being the same for horizotal/vertical, you might wate awhile and run across an oil pan, correct intake and gov. assembly and convert it to a horizontal engine and have something for a project tractor later.
Id agree its overkill, but oh Well... I have yet to see a vertical block thats the same as a Horizontal block that you could just swap pans and a few parts to change arounds one to the other. I assure you this is not such a thing. As to the fixed jet carbs, that alone could put this engine on Ebay. I hate the new fixed jet stuff. More time and more expense.
Posted
Sam, First you have to get exhaust pipes on it before you can tweak the carb. The lean condition is probably a varnish build-up in one of the jets in the carb. I bought a drill index about the size of a matchbook with very small drills that I use to clean and enlarge jets. I try drill bits, using the smooth end, in the jets till I get one that goes thru. I then work it back and forth thru the hole to try and push out the varnish. If I reinstall the jet and carb and the engine still runs lean, then I use the next larger drill (usually +.001) and open the jet up that much. I hold the small drill bit with pliers and use my fingers to turn the jet when cleaning or drilling. Just remember that you can't put metal back so go slowly. I've fixed several this way. I know, by the standards it is wrong, but I have fixed several this way. If you don't have the very small drills, don't try it. You never want to enlarge a jet more than .001 or you are asking for trouble.
Posted
I have used nossle cleaners before. Works good. You can get them at a welding supply store or most anywhere they sell supplies for torches, etc. They are inexpensive, too.
Posted
I had a similar problem on my repower Honda I put into skid loader. Granted it is a different carb, but only had about 40 hours on it when it started fouling one plug, and the other was overly lean. A small piece of gasket material got cut during assembly, and worked its way down into one main jet.
Posted
I've now got all I need to build an exaust and heat deflectors. Sounds like a straight forward repair procedure. I'll have to look for a Intek twin repair manual so I can see how they all come apart before I start in...
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