Small Engine Problems? Ask an Engine Mechanic for Answers ASAP
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For diagnostic purposes, please disconnect the wire to the low oil pressure switch and see if it runs longer than 10 seconds. Then shut it back off if it does. Please let me know and we'll continue...
Quite odd. Does it restart right away?
And just to verify, this is the switch you removed the wire from, correct?
Usually the engine kicks over on one push on the starter. this time it took 2 attempts.
There are two (2) blade attachments on the switch. There is another wire to the low oil indicator light. I had removed only the WHITE wire from the switch. Was that enough to have disconnected the Low Oil shut off system?
Model # XXXXX
Thank you. There should be a yellow wire.
Your 1:29 PM message read, "Thank you. There should have been a yellow wire." You also sent a wiring diagram. You did not ask me to test anything.
My first message was:
"Info Request 3/1/2011 at 12:24 PM (6 minutes and 57 seconds later)Hello, and thank you for choosing JustAnswer. I'll be assisting you today and am committed to providing clear and concise answers to your question.For diagnostic purposes, please disconnect the wire to the low oil pressure switch and see if it runs longer than 10 seconds. Then shut it back off if it does. Please let me know and we'll continue...
You mentioned removing a green wire and a white wire. So then...
Info Request 3/2/2011 at 9:38 AM (11 minutes and 40 seconds later)Are you sure you are not removing a wire other than just the one to the low oil switch? What's the model number of your 7550 and I'll try to post a schematic. I'm still trying to get the answer to the original question. The information provided was to guide you to the correct wire
Absolutely not a problem. We're here to help.
You have two possibilities, and the switch being faulty is usually the problem. However, it can also be that oil pressure is actually too low to operate the switch. The proper diagnostic is to either check the oil pressure, or to pressure test the switch to 10 psi and see if it works. However, again the odds are that the switch is simply faulty.
The switch is part number 099236 and can be ordered from any Briggs & Stratton Dealer or also from M&D online. Here's a link to that site and the part number.
Hope this helps!
The LED is simply a "light emitting diode" and serves only as a visual indicator by flashing during shutdown in a low situation. It has no functionality beyond that.
Keep me posted on your pressure testing please.