My trusty Briggs died OT

[Don Coatney]

Follow this link for details.

http://www.mytractorforum.com/showthread.php?t=123517

[Flatie46]

I got faith in ya, she'll be better than ever before long.

[greg g]

JB weld???? Lotsa parts around for Kohlers. If it will take a rebore maybe a piston from a Kohler will fit. I had my 10 horse Kohler magnum redone last year, 400 bucks worth of parts and machining. Maybe a chevy Piston will fit................

Can;t believe B & S isn't making pistons for the IC line.

are you sure that is a correct engine model number??? Nothing like it on this chart

http://www.jackssmallengines.com/Briggs_Quick_Reference.cfm

[aero3113]

Any Ideas what it was? Could something have been sucked in the intake? Strange:confused:

[greg g]

I can't believe B and S doesn't have a pisto for that. Should have standard and .020 over. that engine number doesn't show o the chart on this site but they have pistons for 15 HP horizontal shaft Engines for 50 bucks.

http://www.jackssmallengines.com/Briggs_Quick_Reference_Details.cfm?ModelNo=28U700

I spent 400 on machine work and new piston for my 20 year old Kohler Magum last season. If brigs doesn't have one maybe look up a Kohler piece. The machine shop guy was able to source both Kohler and aftermarket parts no problem.

[Don Coatney]

Follow this link

http://www.mytractorforum.com/showthread.php?p=1138113#post1138113

[WatchingWolf]

Ummmm Don, that looks a lot like the center electrode from the spark plug......I know it sounds crazy, but it would be a direct path to the cyl. The float pivot can't get there from the float bowl unless it takes the jet and needle with it through the valve chamber......not even possible.

[Olddaddy]

Don, pack it up in a box and ship it to my friend Ralph Holt in DeBary, Florida. He routinely works miracles on obsolete engines for me. He did my Kohler K321, 14hp, has done my air compressor, will be doing my other air compressor etc. If he cant find a piston he will make you one.

[greg g]

I bet Watching wolf is correct. Check ou that plug, may those AC, Champion, folks will help pay for your repair.

[Don Coatney]

Ummmm Don, that looks a lot like the center electrode from the spark plug......I know it sounds crazy, but it would be a direct path to the cyl. The float pivot can't get there from the float bowl unless it takes the jet and needle with it through the valve chamber......not even possible.

I bet Watching wolf is correct. Check ou that plug, may those AC, Champion, folks will help pay for your repair.

Spark plug is intact, electrode is in place and working. What ever that round rod is it had to pass through the carburetor and intake valve (this eliminates the float rod) or it is a rolled piece of piston ring. I will know more after I remove the piston and disassemble the carburetor.

[aero3113]

Is there such a thing as round piston rings?

[Don Coatney]

Is there such a thing as round piston rings?

If they roll out of the piston they could be round.

[Don Coatney]

Update at the link below. Still looking for answers.

http://www.mytractorforum.com/showthread.php?t=123517

[Don Coatney]

This morning I drove to Hockaday tractor repair in Shelbyville, Tennessee. The owner (John) spent about a half hour pondering where the pin came from. He discovered that the choke stop roll pin was missing as pictured below. John is an old time mechanic and is out to help with a problem not make a sale. I ordered all the repair parts I need and I should have them later this week.

[Reg Evans]

Well that's good that the mystery part has been identified. Are you going to have the dents in the head milled away a little or just let it be ?

[Don Coatney]

Well that's good that the mystery part has been identified. Are you going to have the dents in the head milled away a little or just let it be ?

I have a new head coming $80.00. Had I milled the old head enough to remove the pock marks I may have had a valve-to-head clearance issue. I am putting about $600 bucks in this tractor (new carburetor, head, piston, rings, fuel pump, etc) to make correct repairs. When I am done I will have a tractor that will out perform most other makes.

[PatS....]

Probably well worth fixing an old warrior up. The new ones all seem to be unreliable "junk" .

Glad you identified the culprit to maybe prevent a repeat performance.

[martybose]

Just what you need, Don, a race tractor! How long will it be before you challenge someone to a tractor race?

Marty

[greg g]

So now that you know of the design flaw, what are you going to do to keep it from happening again. Darn shame that you can't get more that 30 years out of a choke butterfly stop.

Guess a threaded brass piece with a couple nylok nuts on the ends might last another 30 years.

[dynaflash_8]

Id JB weld the piston and slap it back together.

Then again im cheap!

[Don Coatney]

Today I installed a new piston, rings, wrist pin with keepers, a new head, a new carburetor, a new fuel pump, new electric starter wear parts, new gaskets (the head gasket was made from a sheet of lead supplied from Briggs), New air filter and pre-filter, and re-installed the used Champion spark plug without cleaning it as it looked good. Installed the engine in the tractor, filled it with oil, and it started as soon as I cranked it. It now runs great as I had to tweek the carburetor a bit. Just got done cutting the front yard. Will do the back yard tomorrow.

[Niel Hoback]

Just another successful flathead running again, eh?

[P-12 Tommy]

It's nice when everything falls together.

Tom

[Plymouthy Adams]

falls together...that is what happens when everything falls apart in sychronization..I'm so far behind I won't even see this till next week..if I'm lucky!!

[Jim Yergin]

Today I installed a new piston, rings, wrist pin with keepers, a new head, a new carburetor, a new fuel pump, new electric starter wear parts, new gaskets (the head gasket was made from a sheet of lead supplied from Briggs), New air filter and pre-filter, and re-installed the used Champion spark plug without cleaning it as it looked good. Installed the engine in the tractor, filled it with oil, and it started as soon as I cranked it. It now runs great as I had to tweek the carburetor a bit. Just got done cutting the front yard. Will do the back yard tomorrow.

Don,

Sounds like your hammer story about the original hammer that has only had its head replaced twice and the handle three times. What's left on the engine that was original?

Jim Yergin