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Posted by: LT80
I think they moved on w/another machine, but is this a LT80 like they were for the last cpl years?
If so, don't remove that washer.
Posted by: LT80
I think they're Kymcos.
A very good machine.
Posted by: zilladragster
Bike runs strong up to half trottle after that full trottle does no good just revs out. Must be something electrical. Bike will only run around 20mph. Any help would be nice.
Posted by: FST730
there is a small ring in the CVT variator clutch, take off the left footwell, remove the clutch cover bolts (8), remember where the one small one goes, then you will need an impact wrench, 17mm socket, hold the clutch with your hand and remove the nut, remove the outer sheeve and take out the thick "wedding ring", this ring is stopping the sheeves from coming together, you will get approx 7-10 more MPH out of it
Posted by: scamutz
They are definitely Kymco engines. I purchased one for my daughter and it maxxed out at 15mph. We dropped it back at the dealer today to have the speed limiter on the clutch removed. Are you certain that there's one on the CDI as well?
Posted by: scamutz
In addition, there's some sort of additional baffle in the exhaust.
Posted by: scamutz
The throttle limiting screw will pretty much slow it down as much as you want. It is physically stopping the throttle from moving, so screw it in as far as you like.
As far as removing the clutch restricter....I gained about 8 mph on my daughter's KFX90 by removing it. It went from 15mph, to 23.
Posted by: scamutz
Maybe they do if you remove the exhaust baffle and cut the cdi wires...23mph plenty for my daughter right now though.
Posted by: scamutz
Quote
Other than this, I hope you enjoy it as much as my boys. They are all we expected and more. The only issue that I have with mine is they sound like they want to miss sometime.
This is only while the speed limiter is on them and you're holding it wide open...after it is removed they no longer sound like that.
Posted by: scamutz
You should change the fluids after 10 hours of use...may or may not be a week.
Posted by: scamutz
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Originally posted by: Jday114
I'm having the same problem with the speed issue. I had a YFM 80 when I was in my younger years and it would blow this 90 away. I also need to increase the speed for my son as he has trouble keeping up with me when we're off the trails.
If I remember correctly...that YFM80 had no problem keeping up with a YFM125, and a KLT160. Unbelievable that the guy that I used to ride ATV's 18 years ago just happens to pop up in this thread. So is this Jeff or Chris? Man it's a small world, I'm now living 1000 miles away in Tampa, FL.
Posted by: scamutz
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Originally posted by: bassinms
I think you are trying to compare a speed of a 2 cycle to the speed of a 4 cycle. There is no comparison, the 2 cycle is always faster. A 80cc 2 cycle engine will out run a 90cc 4 cycle engine with no problem.
The YFM80 Moto4, it was probably around an '88 or so? I don't remember that being a 2 cycle. You didn't have to mix gas/oil in any case.
Posted by: scamutz
Mike Morrell
Posted by: bassinms
I can't answer your question, but I am lookint at buying 2 of the Kawie KFX 90 for my boys. Do you recommend these now that you have one or do you wish you had gone with another model??
Posted by: bassinms
jchris,
I also bought 2 ac 90cc (utility model) for my boys and absolutely love them. However, my boys are still to young to worry about moving the limiters, but below is a list of information that you may or may not know.
1. The ac has a breakin period. Within the first week you will need to replace the oil and transmission fluids. If you have not done this, you need too because it has breakin fluid and might I warn you it is a lot of fun. Obviously, Kymco and AC did not design the motor and the frame together because some of the bolts are extremely tight and hard to work with.
2. On the speed limiter, there is a nut that locks the screw. You might need to remove this nut in order to screw the limiter screw all the way in.
3. The ATV should run about 15 mph (90cc) off the floor. If you remove the speed governors, then you should get about 25 mph. I don't think you can get more that 25 mph out of these motors, but I might be wrong.
Other than this, I hope you enjoy it as much as my boys. They are all we expected and more. The only issue that I have with mine is they sound like they want to miss sometime.
P.S. Thanks to everyone that gave me their input on finding the right atv for my kids. I had to pay the high price, but they are definetly worth it as of now.
Posted by: bassinms
Thanks for the confirmation of this. I was wondering if the speed limiter would cause it to sound like it was missing. Thanks a lot.
Posted by: bassinms
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Originally posted by: jchris
My dealer forgot to give me the owners manual (will get this week).
Jimmy, is that info about changing fluids first week in the manual. I know you should do it sooner than later on the first change but that sounds very quick. What else should I know out of the gate. Kids have been on it alot since Christmas day.
jChris,
It just says within the first week you need to replace your oil and transmission fluid. I personally used Lucas oils because they are the best you can buy for a motorcycle (or atleast in my opinion). You will probably need the manual to help show you where everything is on the atv and it is not the easiest to get too.
For the oil change, there is a drain plug on the left hand side (if you are sitting on the atv) to drain the oil which I removed with a 17mm socket and a flex head wrench. Then on the right hand side of the motor there is another screw that you will need to take out because it holds your oil filter screen. There is not really oil filter on the atv other than the screen. I got this bolt out with a 17 mm wrench. It is spring loaded and can be the devil to get back in.
For the transmission, there is one drain plug that you will remove. This bolt is hard to put back in because the frame is right in the way. Once you drain it, you will need to locate the filler plug for the thransmission. It is on the left side right under the sign that says Oil that is engraved on the transmission. It is pretty easy to get to, but hard to put the oil in. I suggest getting a gas line from your automotive store that will hook onto the transmission fluid bottle instead of trying to use a filter.
If you need to adjust your idle speed, there are two screws on the carberator. Make sure you adjust the right one, because the other one is for used as a mixture screw...
Hope this helps. If you have any trouble, you can call your local bass pro store and they will give you the number to their mechanic. The one that I use here seems to be pretty educated on these things.
Posted by: bassinms
I think you are trying to compare a speed of a 2 cycle to the speed of a 4 cycle. There is no comparison, the 2 cycle is always faster. A 80cc 2 cycle engine will out run a 90cc 4 cycle engine with no problem.
Posted by: bdewo
If i am right the new kawa 90 is made by kymco.
Just bought a kymco 90 for my son and one of the restrictions is in the CDI unit and the other is a ring on the clutch CVT. I unrestricted just today the one on the CDI. There are two connectors on the CDI ,one with 4 wires and one with 2 wires .Both connectors have a light green wire, you just cut the light green wire on the 4 wire connector . NOT ON THE 2 WIRE CONNECTOR .It drove alot faster, i still have to remove the one restriction on the CVT.
My friend have a paper with the instructions how to remove that and can post it here later.
Make sure the kawa is the same as the kymco, i think it is , i heard kymco is making some atv for kawa and other brands.Check there is on the kawa CDI are the light green wires on a 4 and 2 wire connector.
Hope this will help you.TextTextText
Posted by: bdewo
The kymco 50 and 90 have a limiter in the CDI for sure, don`t know how exact the same the kawa is.
Posted by: nuff
just trying to do the same thing for my son has anyone found if the wedding ring is the right thing to pull
Posted by: jchris
Just bought AC DVX 90 for kids. Made by Kymco as well. Is there any illustrtion available for removing these spacers. Also after restrictors have been removed, how much will the throttle limiting screw slow it down (mph)
Thanks
Posted by: jchris
I thought these topped out at 28-29mph?
Posted by: jchris
My dealer forgot to give me the owners manual (will get this week).
Jimmy, is that info about changing fluids first week in the manual. I know you should do it sooner than later on the first change but that sounds very quick. What else should I know out of the gate. Kids have been on it alot since Christmas day.
Posted by: Jday114
I'm having the same problem with the speed issue. I had a YFM 80 when I was in my younger years and it would blow this 90 away. I also need to increase the speed for my son as he has trouble keeping up with me when we're off the trails.
Posted by: Jday114
The YFM 80 was a 4-cycle engine and a damn good one. By the way this is jeff, the name doesn't look familiar
Posted by: Jday114
I just had purchased a 350 Raptor and I love it( well ,santa brought it on the 25th). Just like the old warrior
Posted by: Jday114
Good to here from you
