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To my knowledge there were two different manufacturers of the Frequency Switch S14. The internals look slightly different but do the same function. The Aux Fuel Pump operation does not rely on the fuel level sender for the fuel gauge. It is controlled by a separate float switch in the fuel tank.

Simple, just buy a bridge rectifier rated at 400 PRV and use 3 out of 4 of its terminals. Use the + and the two AC input terminals. Plus terminal to L2 and two AC terminals to the other inputs.

S14's are now shipping. :) See listing in the classifieds at: S14's in Classifieds

MEP-802A & MEP-803A Frequency Trip Switch - S14 Replaces 5930-01-396-2940, SPS-100-88-21091, 88-21091 · Direct replacement Frequency Trip Relay for S14 for the MEP-802A & MEP-803A I personally assemble each of the S14 Frequency Trip Switch's. Once built each S14 is installed in my MEP-802A...

About 6 feet. It's just a temporary setup I use in the winter so I don't have to test products out in the snow and ice.

I run mine out the window in my garage when testing products. I used Walker 40001 flexible exhaust hose. Walker 40001 Amazon

First batch of replacement S14's nearing completion :) Will post up when they are ready to ship.

Not needed there. They can't get thru there.

Rat wire over the various opening on the sides, skid frame holes and holes on the bottom of the set.

Here.... MEP-803 TM's All of the available the 803 TM's are there. Need to hover your mouse over the various parts of the post for the different TM's

TM 9-6115-642-24

I buy a ton of components from DigiKey. Huge parts selection and fast shipping. DigiKey

Charging each with a 12 volt charger on different days is fine.

Make sure the wire from my VR labeled M7-I is on the correct terminal on the Oil Pressure Gauge. It should be on the "I" terminal, not the "S" terminal.

Normally you can adjust the frequency a few Hz below 60. You'd need to post up a picture of the mechanical governor lever so we can see if it's a cable problem or an adjustment issue with the mechanical governor stops. Normally the stops are set at the factory and don't need adjusting. Post up...

When you start the generator and hold S1 in START is the correct AC voltage displayed on the generators AC Voltmeter? What voltage does it read? Once you release S1 back to Prime/Run does the AC voltage displayed on the generators AC Voltmeter drop? What voltage does it read?

Did you hook my VR's wire back up to K15-1? Frequency is set by adjusting the Frequency Adjust throttle cable located on the far left as you're facing the control panel. Recessed black knob. unlocking the knob and turning it will adjust the frequency (engine RPM).

If you do replace S14

From those readings it looks like S14 is bad. Do you have that spare S14?

S14's socket is the same as all the other relays next to it. Here it is again