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Well. Not sure but i almost mowed the entire lawn before the motor stopped with some smoke, more stalled but fuel pump still spit some oil. I would guess I mowed 25-30 minutes. Not ready to call it rings, it just starts and runs too good. I will have to pull the valve cover and give a more...

Not good to hear, glad your still around to share wisdom. As an update, i decided to run some seafoam in the oil to see if there is a stuck ring. Ran it for 25min. The pace of oil coming out of the pump was considerably less but still weeping. I will try mowing with it tomorrow to see...

I was looking for something broken or bent. It seemed fine but at the time I had oil blowing into the intake. That doesn’t seem to be the case after sanding the head but I only say that because it wasn’t smoking after the test cut I did afterwards. Before it would start smoking and bogging...

The fuel pump seems to be pumping gas. The throttle is responsive and engine is smooth. I will look for a replacement better than the amzn chinese one I got, that never worked. Getting it off and on is a task with minimal space. I was going to try mowing some after checking oil as the last...

Does the wispy smoke indicate something contrary to Grumpyunks optimism? It has been running strong since the beginning but i did test cut around the house and it didnt smoke which is a plus but the oil was still bubbling out the fuel pump. I did reuse the valve cover gasket, it was new from...

The ports are labeled clearly and hasnt changed. A bit defeated as the head needed sanding and same result. Thinking I need to do a leak down test like others have mentioned. I will need to figure the setup I need and get it. Its unfortunate because the tractor itself is in really nice...

No luck with new head gasket. Still doing the same bubbling out fuel pump.

I did and you are correct, the side with the pushrod chamber was still not shiny. I finished sanding until all that was left was some pitting outside of the bolt pattern. I thought mouse urine may have done that as it is caustic to aluminum. I plan on blowing off the head with an air...

Maybe the 220 was too light to start with but there was some residual gasket material I missed initially so that may have clogged the first piece but it was low on one side so I kept going until it was even except for the pitting which may have been mouse urine, not sure

I pulled thre head and sanded it for 1.5hrs. All by hand on tempered glass. It’s mostly smooth, except area outside bolt pattern that is pitted a bit but nice inside. Used 220 (5 sheets) w duct tape on the corners and one sheet of 600. Seemed to work better with some penetrating oil on the...

Well the neighbor came and said to keep the tractor but took the bagger off it. I guess I feel less conscious of pulling the head again and trying the sand paper. If I messed it up I would have been guilty but now if I fix it I can let him know and get paid for my time. I didn’t want to...

That is a great tip. Thank you. The one I am working on is a LA105 and the one I was going harvest off of is LA110

I was rude and didn’t thank you all for the timely replies. I apologize. Thank you!! How swapable are the heads if I have another similar 19.5 briggs?

I checked the breather to the airbox and I see that small hole but I blew through it and it was clear. I may be at the point of having them take it to a shop. Too much for my time. I would be more inspired if it was my own but I take care of my stuff. Usually just belts and oil and stuff...

No smoke until it runs for a bit and I engage the PTO it was black before changing the head gasket but beautiful light gold since but it hasnt been run more than 5-10 minutes at a time since because it was exhibiting the original symptoms (making a mess). Part of me thought a dead mouse in...

No smoke until it runs for a bit and I engage the PTO

I like that idea. I checked the reed valve on the engine but didnt look close at the air filter housing. The hose was blowing off the housing and I put a hose clamp on it (stupid). I have similar engines for parts. Thanks! I will let you know. I find it odd that it run so good but still...

I agree, i did replace the head gasket and it was blown but I still am having the issue. I changed the fuel/pulse lines to the fuel pump and checked the breather but I still have crankcase pressure evident from the fuel pump leaking oil and the breather blowing off the air intake, especially...

Thanks for reading. I have a JD LA105 with a 19.5 single cylinder OHV. Replaced the head gasket, common cause, the mower starts and runs great but after a minute or two it starts bleeding oil out the fuel pump and breather tube. Wispy smoke when I pull the dip stick too. I adjusted the valves...

For anyone looking to do this it wasnt too bad. Take off the deck and move it out of the way. I started at the motor pulley (drive belt is top pulley) and worked my way inside the belt guides there and pulled the belt towards the rear on the movement pedal side of the pulley by steering column...