Question about Briggs & Stratton Briggs Stratton Vanguard V - Twin Vertical Ohv Engine with Electric Start 23 Hp, 1" X 3 5/32" Shaft, ModelNo. 386777 - 0036 - E1
I actually have the smaller 17.5 hp single-cylinder version of this motor. It's mounted to a lawn tractor (Troy). Was cutting grass and engine just died. Checked all the usual, spark, fuel, compression. Spark is good and strong, compression is fine, fuel getting to carb. What I think is the problem relates to what looks like a small solenoid on the bottom of the float bowl with a 2-wire plug attached to it. I suspect that this is some kind of low-oil shutdown circuit. Checked oil level, and oil it is full.
Engine will start if fuel is poured into carb, but will not stay running. Tried disconnecting plug from solenoid, but still doesn't start. Seems no fuel is getting to engine, as the plug is dry.
Thoughts on how to troubleshoot this thing further? How does that circuit work? It looks like one wire is just a ground going to the block. I guess the sensor could have failed or possibly the oil pump (do these things have oil pumps?) went.
Check the fuses which are under the seat
Also it will not run unless the parking brake is set when your not setting on the seat
Posted on May 02, 2010
The carburetor solenoid has nothing to do with the low-oil-pressure-switch (which kills the ignition when it has low pressure oil). The solenoid requires power from the battery through the ignition switch to open the main jet that it plugs when off. If the solenoid has two wires, one goes to the battery and the other to ground. Testing is simple--turn on the ignition and check for 12 volts across the solenoid connectors. If it has voltage, the solenoid may be open circuited (new solenoid), or the plunger inside of it is stuck in the plug-jet position (which may be cleanable). Hope this helps!
Posted on Jun 07, 2010
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Posted on Jan 02, 2017
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