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Does anyone know who makes this? Looking for any identifying info.

All engine number are located above the Spartan plug wire on the shroud. I have found no records of a Chieftair mower.

Lots of Chieftain equipment names, didn't see that one. Looks like a Briggs 4 hp, maybe 11ci, electronic ignition, mid 1980s I'd guess. Steel deck mower, probably a big box store branded mower made by another company.

Rivets said:

All engine number are located above the Spartan plug wire on the shroud. I have found no records of a Chieftair mower.

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I looked but did not see a model number there.

It will be stamped into the shroud, either on the top or side. Get a bright light and look carefully.

I remember OTASCO {Oklahoma Tire And Supply Company} sold Chieftan mowers like that in the 80's.

Found it very faintly stamped model 110902. Not sure if I can get it to run or not. I cleaned the plug, changed the oil, cleaned the carb, and it won't even burn gas poured directly into the carb.

wesleykey said:

Found it very faintly stamped model 110902. Not sure if I can get it to run or not. I cleaned the plug, changed the oil, cleaned the carb, and it won't even burn gas poured directly into the carb.

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no spark most likely., or it could even be a bad spark plug. try dumping a small amount of gas (a tablespoon or so) into the spark plug hole, reinstall the plug and try to start.
it appears coil was superseded to a new magnetron coil ( https://www.partstree.com/parts/mtd-bs-591420/ ) which does not require points or a condenser.
parts diagram

On that engine you are going to have to replace the pump diagram between the carb and tank if it has been sitting for a while. This manual may be of some help. You will find the type and code numbers next to the model number you found. https://docs.google.com/open?id=0B6NaqjIxWV1ycG8wd0s3Z2Q2X00

Rivets said:

On that engine you are going to have to replace the pump diagram between the carb and tank if it has been sitting for a while. This manual may be of some help. You will find the type and code numbers next to the model number you found. https://docs.google.com/open?id=0B6NaqjIxWV1ycG8wd0s3Z2Q2X00

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OK, but I dumped gas in the carb and it won't burn. I think I'll check spark/ignition coil first, but keep the diaphragm on the list.

Check the induction tube that goes from the carb to the engine under the coil
These are prone to cracking and coming loose at the engine end.
Use a hand held nut driver to do up the small boltsrather than a spannar or socket so you don't strip the threads

I poured gas into the motor behind the plug and it burned that gas. Won’t burn gas poured in the carb. Carb issue????

Either the manifold tube as previously mentioned or inlet valve

Ok I understand where the manifold tube is and I will check that. What is the inlet valve?

t is what is behind the manifold tube that lets the fuel into the engine.

OK, I guess what I am saying is can you better describe this "inlet valve"? I see videos for an intake valve. Is this what we are talking about? The piece that looks similar to a toilet plunger?

This is a intake valve. it's opening and closing to let fuel into the combustion chamber is operate by the oblong lobe on the camshaft that a tappet (or lifter) rides on, the tappet pushes on the valve to open it as the cam lobe comes around lifting the tappet. then the valve spring that is attached to the small end of the valve aids in closing it and helps it have a good seal. same for the exhaust.

Excellent, thanks!

gainestruk said:

I remember OTASCO {Oklahoma Tire And Supply Company} sold Chieftan mowers like that in the 80's.

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Dude, OTASCO was the b o m b back in the day.

slomo

That intake pipe on the old Briggs might be a metal pipe rather than plastic. My money would be on a bad diaphargm between the tank and carb. Keep us posted on what you find.

tom3 said:

That intake pipe on the old Briggs might be a metal pipe rather than plastic. My money would be on a bad diaphargm between the tank and carb. Keep us posted on what you find.

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intake tube comes up as 391377 , appears to be metal https://www.ebay.com/p/1145459487

Manifold tube was loose. I took it off, cleaned it, reinstalled correctly, and the mower runs fine. One fixed, three to go. Thanks everyone!