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Let me save you a bit of trouble. I just went through this with a YD 3203. The clutch will semi-work on flat pavement, but will not work on hills or off-road. Get the 30 series torque converter/jack shaft and put things back the way they were designed. Enjoy.

I will post some pictures tomorrow, but.... We had a great time today with the kart. The original Yerf jack shaft looks to be a simple 5/8 bolt, milled to accept a key and pressed through the jackshaft bearings. I used an aftermarket keyed shaft and used locking collars on either end to...

My parts arrived today - new shaft for the jackshaft and 30 CVT :2guns: I need key stock and I am guessing collars for the driven side/jack shaft? I am guessing that there is no "thrust" bearing/washer/concept involved in the jackshaft because, as long as things are lined up correctly, there...

Thanks for the replies gents. I went ahead and ordered the parts to get the proper jackshaft/tc setup going again. My son had a blast today, but I am too old to have to push him up the hill every time:mad2: Parts arrive early next week. Pics & update to follow. Happy 4th!

Greetings: Long time gearhead, new owner of a Yerf Dog 3203. I haven't owned a go-kart in about 30 years. I bought this cart as a birthday gift for my 10 year old son which was today. He is a decent driver at this point and has pretty good dirt bike skills. We will tune it up over time, but...