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bum clutch? I think so. If I try without the cover, there is a piece that will fall loose and nothing will work

I just rode for about an hour and it is still not riding very well at all. It can get to 30 mph but it struggles to get there, especially at mid torque and high end torque and 20 mph struggling over a bridge. It has the 100cc big bore kit, performance carb, performance exhaust, performance CDI & Coil, performance variator and all and is slower than before. The idling is much better but not perfect yet as well as the take off speed is much better. Im quickly learning but new to 4 strokes from 2 stroke motorized bicycles. Overall, it feels rich during mid and high end torque and kinda boggs/sputters but not very badly. Included were 4 jets #80, 85, 90, 95 and I have #95 in it which is what the seller recommended. Does this have to do with the air mixture? Jet? Something else? Suggestions?

Thanks!

im waiting for it to stop raining

my battery has been giving me problems so I had to recharge it and have not tested it but will take it for a test ride shortly. I started it and fixed the idle issue its been having. I didn't realize it was the screw near the throttle cable because im new to scooters from 2 stroke motorized bicycles where those carbs dont have nearly as many tuning options. I thought it was the air mixture screw and now that one might be off. Please share any insight for that screw and how to know where it should be. Thanks

OK I am use to working with 2 stroke engines, not 4 stroke. Thanks

My first issue is it will not idle properly. Before I installed this big bore kit, it was having the same idling problem. Before the big bore kit, it also was very slow off the line and I literally have to push it like a skateboard until it has alittle momentum like if it starts in second gear or something. This is essentially why I got the big bore kit. I have not installed the new 8g rollers yet that came with the kit so hopefully that will fix it all of this. I tried all of the jets that were included in the kit #85, #90, #95 and they all seem to function the same. I asked the seller which jet I should use for South Florida and they said #95 so I tried it first and it could not stay on without giving alittle throttle even with the idle screw screwed all the way in and just about the same exact with both other jet sizes. I have not driven it but it starts up like a beast and revs properly and seems like it has proper compression and seems like it will drive good.  I cannot let go of the throttle or it will die with all 3 jets. I have the idle screw screwed all the way in with the needle setting at the very top.

Now, I did not have a feeler guage where .004 was suggested when mounting the rockers and I think mine might be off by quite a bit but it sounds fine when I rev but I don't know the difference. I didn't have the feeler guage and now that I think about it, they might be a bit loose. I apoligize and my instruction was from youtube and this is my first 4 stroke build so im wondering if that would even cause these idle symptoms? Or what symptoms would I get for the rockers in bad positions? Hopefully my timing is right but that too might be a tad bit off. 

My other concern is the kit included some kind of plastic gear with mount which I have no clue where it goes and also some of the extra gaskets I have no clue what they belong. 

all pictured below with picture of my scooter and kit I installed.  
On to rollers and that part.
Thanks

NE1?