I have a murray with a 12.5hp briggs and stratton I/C gold
I was given a mower for free, Id seen it sit in my neighbors yard for about two years now. Visually, the mower looks new. They even covered the engine.
They moved out and told me I could have it.
What I do know and have done.
Checked battery voltage. Zero.
Put air in the tires.
I jumped the mower with my other mower, it fired right up. Awesome.
Few minutes later I notice the engine begin to smoke a little.
So I pop the filter cover off and notice oil in the filter housing.
I left the cover off and fired the mower up again, and oil spewed out of the breather hose like water through a hose. Turn it off.
I check the oil, to me, it seemed the oil was over filled, excessively. so I drain it, and put in the required amount.
Fire the mower back up, it smokes but I figure this is just oil that has accumulated from an overfilled of oil. It eventually burns off and runs fine for about twenty minutes, I go to mow with it a little and all of a sudden the mower just stops moving forward, engine still ran at this point, I check into it, a pulley has destroyed itself, so I replace the pulley, fire the mower back up and proceed to mow.
All is well for ten minutes or so, then the engine begins to over rev, and a massive, thick, white cloud of smoke rolls out of the exhaust, engine boggs down.
I attribute the problem to the over rev condition, causing the oil to puke from the breather tube. So I adjust the governor down, until the throttle blade is about 1/8" open when the throttle is fully engaged. This seems to take care of the overrevving. I go mow with it, left the hood up, filter off so I could keep an eye on the carb to see if any oil began to spew out excessively.
I mow for about ten minutes once again, all is well, then I see gas shoot out of the carb and well, a little fire happened. The choke lever melted and who knows what else.
When it first give me issue, I did a compression test and got right at 50 psi cold, I know in a big 4 stroke, thats way on the low side but I have no idea what a small engine compressin psi should read, I tried to find the info online but was unable too.
I know something about big 4 stroke engines but this is the first time Ive tried to even tackle a small 4 stroke, seems they a slightly different animal.
Guess Im looking for direction. Why would oil gush out the breather hole? Why would gas have squirt out of the carb inlet?
Despite the bad, the mower cut good when it cut, everything else looks good, minimal almost nonexistant rust on the sheetmetal, paint is still shiny and new looking, seat is damaged, as the mower sat out in the weather for a couple years but it seems like it has potential.
I have no idea what a used good, or new briggs 12.5hp gold motor would run to replace or what it might cost to rebuild this one?
Any input appreciated, alot to read I know but I tried to put it all out there.
Thanks
I was given a mower for free, Id seen it sit in my neighbors yard for about two years now. Visually, the mower looks new. They even covered the engine.
They moved out and told me I could have it.
What I do know and have done.
Checked battery voltage. Zero.
Put air in the tires.
I jumped the mower with my other mower, it fired right up. Awesome.
Few minutes later I notice the engine begin to smoke a little.
So I pop the filter cover off and notice oil in the filter housing.
I left the cover off and fired the mower up again, and oil spewed out of the breather hose like water through a hose. Turn it off.
I check the oil, to me, it seemed the oil was over filled, excessively. so I drain it, and put in the required amount.
Fire the mower back up, it smokes but I figure this is just oil that has accumulated from an overfilled of oil. It eventually burns off and runs fine for about twenty minutes, I go to mow with it a little and all of a sudden the mower just stops moving forward, engine still ran at this point, I check into it, a pulley has destroyed itself, so I replace the pulley, fire the mower back up and proceed to mow.
All is well for ten minutes or so, then the engine begins to over rev, and a massive, thick, white cloud of smoke rolls out of the exhaust, engine boggs down.
I attribute the problem to the over rev condition, causing the oil to puke from the breather tube. So I adjust the governor down, until the throttle blade is about 1/8" open when the throttle is fully engaged. This seems to take care of the overrevving. I go mow with it, left the hood up, filter off so I could keep an eye on the carb to see if any oil began to spew out excessively.
I mow for about ten minutes once again, all is well, then I see gas shoot out of the carb and well, a little fire happened. The choke lever melted and who knows what else.
When it first give me issue, I did a compression test and got right at 50 psi cold, I know in a big 4 stroke, thats way on the low side but I have no idea what a small engine compressin psi should read, I tried to find the info online but was unable too.
I know something about big 4 stroke engines but this is the first time Ive tried to even tackle a small 4 stroke, seems they a slightly different animal.
Guess Im looking for direction. Why would oil gush out the breather hole? Why would gas have squirt out of the carb inlet?
Despite the bad, the mower cut good when it cut, everything else looks good, minimal almost nonexistant rust on the sheetmetal, paint is still shiny and new looking, seat is damaged, as the mower sat out in the weather for a couple years but it seems like it has potential.
I have no idea what a used good, or new briggs 12.5hp gold motor would run to replace or what it might cost to rebuild this one?
Any input appreciated, alot to read I know but I tried to put it all out there.
Thanks
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