Briggs 7.8hp will not run more than 10 seconds

Would definitely be cheapest way to go :-) but the switch actual protects against low oil pressure which could be caused by problems other than just low oil. So I am going to replace it.

Richard
 
rszanti said:
Would definitely be cheapest way to go :-) but the switch actual protects against low oil pressure which could be caused by problems other than just low oil. So I am going to replace it.

Richard
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Eh.. If the problem caused by something other than low oil it'll just give me an excuse to get a bigger genset :thumbsup: This ones 17yrs already..
 
rszanti said:
Would definitely be cheapest way to go :-) but the switch actual protects against low oil pressure which could be caused by problems other than just low oil. So I am going to replace it.

Richard
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I don't think your engine has any oil pressure, it's splash lubricated.

That switch is for low/no oil.
 
John R said:
I don't think your engine has any oil pressure, it's splash lubricated.

That switch is for low/no oil.
Click to expand...

You know that, & I suspect that but as the owner never bothered to post engine numbers so it could be checked out it was not worth contradicting .
I have never seen a pressure switch in any briggs engine ever .
The only switches I have ever seen are oil level switches even up to the 28 HP Professional units fitted to skid steers
 
My apologies to the group (and to Briggs & Stratton), I have discovered since starting this thread that the engine may be a 7.8hp "Generac" model. In any case there is a B&S parts listing I got from the Sears website which does list an 8psi pressure switch (not a level) even though I can't find an oil pump in the parts list (?????) or parts diagram. And the switch definitely appears to be a pressure switch, at least from the outside. My replacement arrives tomorrow so I'll know for sure after I do the exchange.

I cannot find an engine model number on the engine. It was the Sears part listing that led me to believe the engine was a Briggs. But photos I've looked at in Google lead me to believe it is a Generac. The two are so close together in size etc. it's hard to tell. Very confusing !

Richard
 
rszanti said:
My apologies to the group (and to Briggs & Stratton), I have discovered since starting this thread that the engine may be a 7.8hp "Generac" model. In any case there is a B&S parts listing I got from the Sears website which does list an 8psi pressure switch (not a level) even though I can't find an oil pump in the parts list (?????) or parts diagram. And the switch definitely appears to be a pressure switch, at least from the outside. My replacement arrives tomorrow so I'll know for sure after I do the exchange.

I cannot find an engine model number on the engine. It was the Sears part listing that led me to believe the engine was a Briggs. But photos I've looked at in Google lead me to believe it is a Generac. The two are so close together in size etc. it's hard to tell. Very confusing !

Richard
Click to expand...

I'm sorry, I thought you knew that? The 7.8 is indeed a 'Generac' (thus its use on Generac GenSets like mine) but I believe in 1998 the smaller portables were sold to B&S under an agreement, but was regained by Generac in 2007. This is why you see B&S 7.8hp 'Generac' engines. They are the same.

The switch is a pressure switch, but the pressure required to activate it is very, very low and is used as an indicator of low oil. Thats why I just went ahead and pulled the wires instead of constantly cleaning/replacing it.
 
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