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Well, I made the shaft and cut the keys for the sprocket myself on a mill. The shaft was made for that sprocket. All I can think that may be the key stock that was used wasnt a standard key material.

Not the best picture but you can see the setup.

Guys, I got done with the 420 upgrade and got it going. So far though it's sheared off both rear tire plates where it mounts to the rim. And yesterday I was going to look at going from the #41 chain and sprockets back to the original #520. That's when I seen that the key in the Jack shaft was...

No mods to the 212 other than a torque converter. I'm going to increase the idle a bit to just under it grabbing. As far as choking the 420 for startup..I mean every single time. Even once it's warm. But once it's running I don't have to leave it half way, it runs great.

Guys I've got two questions. I have a predator 420 on a cart that has to be choked everytime you crank it no matter if it's already warm. Anyone know why this is? And on my sons minibike we have a 212. When he let's off the throttle, quite often it'll die. Just need some help here. Thanks

Guys I found this diagram online also. I having a hard time figuring out how to hook this up.

I found this diagram online today. I'm pretty sure it's the predator 420 minus the the low oil sensor. I'll know for sure tonight. But I just want to remove the key switch and tie into the existing push button start.

Anyone done this before?

Guys, I need some help with wiring this 420 up to the yerfdogs push button start. I'll attach some pictures of the current wiring. They had the brake switch bypassed. I'm not for sure what to hook where. Help would be greatly appreciated.

Looks good, I ended up leaving my setup the way it was. Talked to the guy over at the supply house and he said that all I needed was the yellow spring. Got all my stuff ordered last night.

Alright here is some pics. First, is this set up going to work? Do I need to reverse the driven pulley, or can I just take off the red spring and replace with a yellow?

Yeah seems like thats what the yellow sprint would be for, to apply tension in the opposite direction.

Tell you the truth, I didn't know it was backwards! The setup came of an ezgo and I just switched it over. But now I see I've got some figuring to do... ---------- Post added at 06:01 AM ---------- Previous post was at 05:45 AM ---------- I wonder if I can leave it setup like this but go with...

Here's some pics of the mock up.

Pics tomorrow!!! Promise

Hey guys I'm getting this predator and torque converter setup with the jackshaft I made. The tq came from something else I had and has no belt. How do I go about figuring the center line between the drive and jackshaft? Also I'm gonna need a belt, so I need to figure that out also.

Well I purchased this one, hopefully it's right. http://m.ebay.com/itm/272259976603?_trkparms=aid=222007&algo=SIC.MBE&ao=1&asc=20161006002618&meid=14b15db2a5444f6688ed9bc5b0de8243&pid=100694&rk=1&rkt=13&sd=322213103869&_trksid=p2385738.c100694.m4598&_mwBanner=1

Well, I think it's excessive. When I say tilt I mean if it has a full tank and you slosh it side to side, it runs out. That's not safe. I'd rather it seal and have a vent hose of some kind.

Not much trouble when you have access to a milling machine.

Here's what I have so far with my jack shaft. Gotta cut the keyways.