Top Mod for Predator 3500 - Activating fuel shut off valve function

Toggle Switch

JST connectors

[ynotjf]

Very ingenious! I just purchased the Predator and was thinking about the best way to shut-off the fuel supply to drain the carb. Your solution is eloquent and I think I’ll copy it!

[postalinVT]

Thanks for this vid. Been wondering how to do this. I wonder how it would work with my remote starter set up.

[tom]

Just a note that I would like to share with everyone, check your fuel valve for a bypass, mine didn't leak any fuel, but it didn't totally shut the gas off to the carburetor, I could drain the carburetor bowl come back 15 minutes later and it's full again.

[markashlock]

I hope you’re still checking this because I have a question. I did your mod before ever even using my gen. Mod works great (Thanks), but I have an issue. If I plug in a standard cheap electric heater, it works great. However, if I use my fancy digitally controlled heater, my heater doesn’t recognize my gen as a power source. No heat, no lights, nothing. Could this mod have anything to do with that, or do you have another suggestion?
PS. I also have the HF 2000 Inverter, and it runs both heaters fine.
Thanks Again!!!

[danielrbeals]

You don't explain if closing the toggle switch across the black and red wires on JST connector shuts off the engine, or opening the toggle switch across the JST shuts off the engine.

[mlbramlett]

Does it matter which wire (red or black) connects to which post on the toggle switch.

[mrgreenbudz]

Can someone tell me what screwdriver is needed to remove the Start. Run, Off dial? can't see in the little hole even with a flashlight and even inserting a long Phillips doesn't seem to bite anything. Thank you.

[mrgreenbudz]

Hi, I have a question my Predator 3500 won't shut off when I turn the knob to the off position and sputters and sputters like it's dying but won't shut off for about 3 minutes. Any ideas?

[leslieferrer]

Like the video it is very informative, my question is i did this mod as instructed in the video and when i turn the switch to off the engine seems to run for a long time. The main switch in the off positio dosen't seem to shut the fuel off the engine continues to run for over ten minutes. Any thoughts or suggestions.

[rodneyemerzian]

My predator 3500 does not have the j plug connection. How can I go about installing this kill switch.

[s.g.zamantakis]

Will this work with a remote start stop I added?

[ellobo]

Well, just my luck. I have a “newer” version and it has no little plug in wire coming out of the rear wall as yours does 🤦🏻‍♂️

[danielrbeals]

The JST connectors apparently sizes come in 1.25mm, 2.0mm and 2.54mm. Anybody know the correct size JST that fits on this machine? Maybe a link to either Amazon or Ebay perhaps?

[jefffrayer]

Just another " Modification " on this great design that is NOT needed. What is so hard about taking the side panel off with only 2 phillips screws and drain the carb using the drain provided? Takes 15 seconds folks and while you're there makes it much easier to also check the oil. And best idea of all, , , turn the knob to run or start and drain ALL the gas out so NO possibility of gas going bad in the unit. Don't drill holes or leave doors and panels off. Don't overfill gas tank. Clean or take spark arrester off, only use fresh, clean fuel and it will run a long trouble free life. Some people depend on this generator to run critical medical equipment and these, " Modifications " the " Experts " put out make it less reliable. Some of the modifications can actually make it overheat and fail.