Help with Yerf dog start button

[lopezmike]

Hello
I have a Yerf dog spiderbox gy6 150cc go kart that had ran fine until a couple months ago. We couldnt get it to start using the ignition switch. When we press the switch i hear a click in the back but the starter doesnt turn. And now i don’t hear anything so I replaced the starter solenoid thinking that was the problem and still no luck. It will start and run if I jump across the solenoid using a screwdriver but no luck unsing the switch. So I decided I wanted to go with a key start if I wanted to fix the issue. So if you could please help me wire and fix it, that would be great and really appreciated

 

[Texan]

Did you check the brake switch? The brake pedal has to be depressed, which trips the brake switch, for the engine to start.

 

[lopezmike]

Did you check the brake switch? The brake pedal has to be depressed, which trips the brake switch, for the engine to start.

I never had to press the brake switch to start it before, but I’ll make sure again tomorrow. But anything else?

 

[Karttekk]

Most buggies have stop switches, one near the ignition switch and one near the engine CDI box. That way you can kill the engine from the front of the kart or the rear. If your kart is equipped with them, bypass them temporarily to see if they're affecting anything. The fact that you hear a click should indicate the stop switches are working but I would bypass them anyway for now.

Thanks

 

[Texan]

I never had to press the brake switch to start it before, but I’ll make sure again tomorrow. But anything else?

This is the brake/safety switch, maybe yours has already been removed. On the one I fixed, I just unplugged it and plugged the incoming leads into each other (bypassing it).



You should next check your kill switch and your push button starter switch on the steering column. They are not that great of quality. Can you use a multimeter?

 

[lopezmike]

Most buggies have stop switches, one near the ignition switch and one near the engine CDI box. That way you can kill the engine from the front of the kart or the rear. If your kart is equipped with them, bypass them temporarily to see if they're affecting anything. The fact that you hear a click should indicate the stop switches are working but I would bypass them anyway for now.

Thanks

How do I bypass them? And can you send pictures of them? Cause I’ve never seen them before, thanks!

---------- Post added at 12:24 PM ---------- Previous post was at 12:22 PM ----------

This is the brake/safety switch, maybe yours has already been removed. On the one I fixed, I just unplugged it and plugged the incoming leads into each other (bypassing it).

View attachment 105725

You should next check your kill switch and your push button starter switch on the steering column. They are not that great of quality. Can you use a multimeter?

I’ll check if my brake switch is unplugged once i get home. But I have something similar to the multimeter, mine is to check if there is voltage, when I use it I get voltage to the kill switch and lights but not to the button

 

[Karttekk]

Stop switches are usually mounted in housings with clip retainers. They have lugs on the bottom where spade lugs slip over them. The easiest way to bypass them is to remove them from their housings, pull the wires off the lugs then connect the ends together somehow. This way the power is going straight through opposed to through the switch.

Thanks

 

[Karttekk]

Here's a better image courtesy of Extreme Motor Sales. They're usually red spring loaded buttons.

Thanks

 

[lopezmike]

This is how mine is, and pressing the brake didn’t do anything

 

[Texan]

Plug your brake switch in....

 

[lopezmike]

Plug your brake switch in....

How do I do that? I mean the switch ran good before and that’s how it was. But how do I plug it in then?

 

[Texan]

How do I do that? I mean the switch ran good before and that’s how it was. But how do I plug it in then?

From your picture, the brake switch is already bypassed, so just leave it like that. If it was working before, than something has failed, by all the mud on your kart, it's possible mud/water has shorted something out.

 

[lopezmike]

From your picture, the brake switch is already bypassed, so just leave it like that. If it was working before, than something has failed, by all the mud on your kart, it's possible mud/water has shorted something out.

So should I cut the sleeve to the the wires going to the start button and see if anything is wrong?

 

[lopezmike]

So I got the start button working by using a new button and new wire. I put the wires straight to the solenoid and it fired up! So I was wondering if I should replace the old wires with new ones and run them through the cdi and stuff or just run new longer wire straight to the solenoid bypassing all the cdi and stuff? Thanks

 

[Karttekk]

Try the new button with the existing wires, more than likely it was the button. If not, I would wire it according to factory specs. Usually factory is best for proper overall functionality.

Thanks

 

[lopezmike]

Try the new button with the existing wires, more than likely it was the button. If not, I would wire it according to factory specs. Usually factory is best for proper overall functionality.

Thanks

Ok thanks, and turns out both the switch and wires are bad

 

[lopezmike]

Try the new button with the existing wires, more than likely it was the button. If not, I would wire it according to factory specs. Usually factory is best for proper overall functionality.

Thanks

Can I just wire two new wires to the solenoid and start button? Cause the the old wires with the new button didn’t work

 

[Karttekk]

Do whatever you think will work. Normally most of us here try to do things safely if not factory. I can't suggest you do something that isn't recommended. If you're comfortable with your decision see what happens.

Thanks

 

[lopezmike]

Do whatever you think will work. Normally most of us here try to do things safely if not factory. I can't suggest you do something that isn't recommended. If you're comfortable with your decision see what happens.

Thanks

Will anything bad happen if I wire it straight to the solenoid?