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Plus you are not going to get just oil rings.

140 inch lbs is not too much for 5/16 bolts. Current spec for some B&S engines call for 200 inch lbs for 5/16 grade 8 head bolts. I just checked the B&S Service Manual and it calls for 140 inch lbs for that series of engine. Have no idea what that is in metric. Walt Conner

HP rating decals on mowers mean very little. Towards the end of the run of "L" head engines due to Government emissions restrictions, B&S was plastering all kinds of HP ratings on the left over engines. I have seen 46 series engines with 16.5 hp stickers on them, originally called 20 - 22 hp...

Well it diffident is not a 44, that is a OHV engine.

Or I can send you a free B&S Service Manual at address below, put in proper format and remind me what you want. Walt Conner wconner5 at frontier dot com

You can not tell from the physical appearance of these engine whether it is a 40, 42 or a 46 series engine. While some parts will interchange between the three, not all will obviously since the hp varies considerably. I doubt it is a 40 series. Walt Conner

Since that engine has a cast iron intake manifold, it will be too old to have a tag riveted to the top of the cooling shroud. The number would have been on the cooling shroud covering the side of the cylinder to the left of the picture when facing the intake manifold, #1 cylinder. Well, it...

I have and did use the same equipment above. At my age, I no longer do work. IF it ain't broke, don't fix it. Walt Conner

Welcome from east central Illinois, Walt Conner

I can't really tell you since you did not post the engine model number nor if it has a Walbro or a Nikki carb. IF it happens to be a Walbro - 691657, didn't list one for Nikki. Plug from practically any Walbro will work. OR you can just depress the plunger on the solenoid, jam a tooth pick...

Welcome from east central Illinois, good luck, Walt Conner

I always shot for the minimum on the Intake valve which is the most critical for Conpression Release action, mid on Exhaust Walt Conner

OR you can replace the fuel solenoid with a plug. Your mounting holes will match but cylinder will stick out one side of the engine. Walt Conner

Welcome from east central Illinois, Walt Conner

"I took a Tecumseh push mower engine apart several years ago and it had a piston oil pump inside." And they had a screen over the intake which got gummed up and sealed off by neglect resulting in thrown rods. I always took the screen out when I had one apart. And crankcase seals is not your...

Where do you live? You obviously had the heads off, what did the cylinder walls look like? I know where there is probably one in Robinson, IL but I don't think widow would ship, I wouldn't either. Pistons and rings for that are the same as for 28 series "L" head singles. Walt Conner

I can send you a Service Manual for your engine IF you like. Address below, put in proper format and remind me what you want. Walt Conner wconner5 at frontier dot com

IF above doesn't turn up anything, see if it is running on both cylinders when it pulls down. Remove spark plug wires one at a time to see if running on both. Walt Conner

Pick the engine up and drop it 6 inches on the PTO end of the crankshaft on a soft pc of wood, (2X4) now see if you can feel any play at all when you grasp the PTO end of crankshaft and alternately push and pull. IF you can feel any movement, end play is OK, if nothing then need thicker or...

Ooops disregard my post on governor gear. Lack of an engine model number lead me astray. If it were mine, I would find a gear OK. Walt Conner

My thoughts exactly. Walt Conner

The governor gear is not something I have had to replace frequently, generally when the engine thru a rod. I probably have a dozen good ones lying around and by cross referencing model numbers, you will likely find a bunch of good used ones and possibly a dealer with a new one in stock. The main...

The leaking sump gasket plauged all the V twin B&S engines and the cost of the upgrade "fix" kit for the sump probably is a good part of your gasket expense. I made my own gasket with equal quality gasket material from O'Reily Auto Parts, bought grade 8 bolts in the bulk from Rural King Farm...

Sheesh, where's the aspirin? Walt Conner

I doubt that you will find anyone here recommending any of the procedure you listed except junking. I have straightened them but *only* using a friends straightening fixture made for that express purpose. I made my own specifically for straightening Lawn Boy F series crankshafts which always...

Yeah, you need a blade. Brings to mind many years ago BIL brought his mower with similar engine. I pulled the flywheel and I could see just a mark on the key. I said there is your problem. He gave my that "You stupid idiot" look snearing. I replaced the key, all was well and he had a different...

Don't want to be argumentative but, I have found from experience that it is best to have the wind to your side, 90 degrees, as if it is to your back, it may cause back current bringing fumes back into your face. Walt Conner

All B&S engines using a built up camshaft as opposed to a one pc. forged steel one, are suseptable to premature wear due to improper harding of some cam lobs. Check the IPL on line for your engine. Walt Conner

Some of this series engine had voltage regulators, not all. I can send you a Service Manual for your engine IF you like, address below, put in proper format and remind me engine model number and what you want. Walt Conner wconner5 at frontier dot com

Give it a little choke and see if that clears it up, IF so, running to lean. IF it makes it run worse, running too rich. there were about 3 different gaskets for between the carb and the air cleaner box for this engine. There is a small vent hole in the mating surface which is different with...

Welcome from east central Illinois, Walt Conner

Note that it is normal for this engine to blow back thru carb as a part of its' compression release function. Excessive blow back may indicate that the Intake Valve is not sealing, needs adjusting or more likely, re-seatning, warped, loose valve seat, etc. Walt Conner

I buy cable off the spool at Rural King just replacing the core and fabing ends. Walt Conner

Glad you got it fixed and no cost! Next time, please supply engine model number, info furnished isn't helpful identifying engine. Walt Conner

I agree and I think B&S specified piston 1/4" down past TDC specifically for the amateur home owner. I can send you a Service Manual IF you like. Address below, put in proper format and remind me engine model number and what you want. Walt Conner wconner5 at frontier dot com

Welcome from east central Illinois, Walt Conner

A lot of these junk built up from segments camshafts had cam lobes which were not properly hardened. This was never a problem with the one pc. forged steel camshafts used for years by B&S. But they no doubt save a few cents with these plus they get a lot from selling replacements. Walt Conner

"When measuring 1/4" backoff from TDC on compression stroke-- a 1/4" wooden dowel sliver (~1/2") split diagonally and broke off." Well either you are using a drastically wrong method or not explaining correctly. From reading your post, I suggest you take it to someone with some experience. I...

You are doing something I never did and would not recommend. Putting new rings in just one cylinder but that is not causing your problem. There must be the correct valve clearance on each valve when it is in the correct position to set valves as outlined previously. Don't recall that I ever...

Why don't you just cut up and down instead of crosswise? Walt Conner

Welcome from east central Illinois. When asking an engine question it is always helpful to post the model number. There are multiple 18.5 hp B&S engines totally different. Walt Conner

My narrative includes alternate fixes furnished to me by others with permission to share including a variation to mine which does not even need a head gasket. So, too long to post here. Address below, put in proper format and remind me what you want. Walt Conner wconner5 at frontier dot com

Yes, of course this is a flat head horizontally opposed engine. It is possible that the new rings increased the compression enough that the starter could no longer turn the engine over. Start with the simple stuff. Make sure all battery cable connections are good with special attention to where...

Better be sure it was not a slipped valve guide which caused the problem rather than stuck valve, much more typical. IF you find that, post back for fix. Walt Conner

Before you do all that, check that the gas cap vent hole is not obstructed. Walt Conner

IF you doubt what you have been told about the switch, disconnect the "Kill Wire" from it and see what happens. The Kill Wire will have to be kept from touching anything until you are ready to shut the engine off then just ground it. Walt Conner

"B&S 17.5 Intek model 3 F707 00112 E1021107ZA" This is not the engine model number. The model number will be stamped into the valve cover and will probably be 31----. Walt Conner

." Seems that older tractors had more power on less hp rating ." "Once upon a time", some engines such as Wisconsin and Kohler rated according to what you could expect hour after hour. Now they rate them in the lab using unusual condition and for what they can wring out of them for just a very...

Leaks with V twins, OP needs to post engine model numbers when asking an engine questions as there are at least two 17.5 hp B&S vertical shaft engines completely different, maybe 3 come to think of it. Walt Conner

And next time post the engine model number so we know what engine we are actually talking about. Walt Conner