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Lol, upon some digging around read up that some of these old ff620 back plates are stationary haven't gotton into it yet but shaft and variator is keyed so parts are limited enough cvt is starting to drive me crazy because of part limitation. Just exploring the fact that it may be one of the...

Another idea If I cannot get the back plate off the cvt can't I just take the variator off and replace it with a regular centrifugal go kart clutch and make it chain driven?

Lost key from shaft, variator fan keeps coming loose. I put some locktite on bolt hoping it will keep it secure. But will have to address the issue sooner than later gonna try and see if the back plate removes asap

I'm hoping it comes off I'm out of options, can't hardly find parts for this model, if I do get it changed soon I'll just give it to you for shipping cost. You think I'll have to change keyed shaft to support new dimensions of converter ?

How difficult is it to convert my current set up (pictured) to this http://m.ebay.com/itm/181487723213?nav=SEARCH my driveshaft has keyway, not sure if this setup would work for me without changing shaft.

yea looks like I'm just going to have to put it back on and use it until I can actually find one. I am also going to try and scoop up some ff620s for parts if I can find any around at decent prices.

Your the man, thanks for the info. Any idea on the weights ?

Here's a picture of fan and weights. All I really need is a new fan and weights it seems.

Ok sure will this evening when I get off work, thanks a lot guys.

Pics Can't get it to upload more than one at a time gonna send cpl more

Yes except in my attempt to remove the old one without impact drill I broke a few spindles.

Looking for drive clutch assembly for Firefox 620 all the other gy6 variators I've found isnt big enough. Mine has key way on driveshaft and the roller weights are solid all around. None of the variators I've found online are big enough to fit the shaft and don't have key way I've searched all I...

Weights Weights are a lot different to. Anyone know where I can get this type weights and variator?

I made the mistake of ordering a new 150cc variator and weights for my kart without taking mine off first. New one is to small for the shaft and no key way. And of course as I wasent using an impact drill to take the old one of I broke a couple spindles�� lesson learned back to the...

Old belt is in good shape I changed the clutch and variator but the old one was super hard to get off. I know the belt should slide over the clutch and variator with hardly any stres but when I took this one off it was really tight and it's really tight trying to go back on it lacks about an...

Anyone know the factory belt size for a Firefox 620. I've googled it and alpha sports and atv parts only has the belt on the diagram but doesn't say size.

Cool find what would you offer on something like this https://winstonsalem.craigslist.org/bar/4805368349.html

What is a trusted name brand for parts that will hold up. I've been looking at "scorpion" parts for my gy6, prices are reasonable but a little higher than some.

19-7-8 front 19-9.5-8 on rear would 1500rpm parts be sufficient, or should I go on up to 2k?

i have another post called Firefox 620 with pics. I need to change the clutch, bell, variator,weights,and springs. I've never dealt with the cvt set up before.