Generac NP 50G hard to start. When it does start runs for awhile then rpm starts to go up and down.

SOURCE: Generac NP 50G Stops after 2-30min.

check the oil sensor circuit. I know when I take out or short out the sensor ckt on mine, it'll keep on running. low oil isn't good for any motor.

Testimonial: "Parts are on order and will verify the fix. But this makes a lot of since based."

SOURCE: Generac NP 50G wont crank

Measure voltage drop across the far ends of the fuse wiring (should measure zero), as one of the wires or it's connection to either end of the fuse may be open. Check the battery negative grounding connection at the frame. If all ok, you may need to find a wiring diagram for the machine. Does this unit have a low-oil-level switch which will kill the engine if set?

SOURCE: RPM/voltage fluctuation on Guardian Primepact 50G

The voltage regulator board on this unit is notorious for failing. If you are handy, you can replace it yourself with basic tools and a voltmeter to set the output. The part is about 200 dollars. Good luck

Matt Olenzek

• 297 Answers
• Posted on Dec 04, 2010

SOURCE: I have a generac 50G.

Hello,

This is the easiest way, get a hand held power drill and plug it into one of the 120 volt recepticals. Make sure all the cicut breakers are pushed in before you do this. OK here is the trick, with the generator running, pull the trigger on the drill and spin it hard BACKWARDS. You must keep the trigger pulled and DONT hangonto the chuck after you spin it......... It will just take off spinning. If it doesnt work at first do it again, if it does not work, make sure you are spinning it as fast as you can. If the drill motor does not just take off after three attemps, you might have a bad diode that needs to be replaced.


Hope this works, Let me know :)

Matt

If you need further help, I’m available over the phone at https://www.6ya.com/expert/matt_8dbc24bf722649ac

Instant Repair Help over the Phone

6ya.com

Save Time & Money by instantly connecting to...