BEST MINIBIKE UPGRADE!!! Installing and Tuning a Mikuni Carburetor on a Coleman CT200

[@Bubbleuprubberdown]

5:42 slide and needle. The needle passes through the main jet that is actually in the carb. On some mikuni carbs you can access the main jet by removing the bolt at the bottom of the float bowl. Some mikiuni carbs like the VM 22 it’s real easy, bottom of the bowl and to the side. The needle is responsible for 1/4-3/4 throttle position. Best way to tune a carb is get the idle and main jets sorted then deal with the needle. After the needle is in a good spit you probably need to go over the pilot and main jet again to fine tune.

[@junkyardjedi7706]

That's not the main jet .that's the jet needle. The jet needle seats into the main jet. The jet needle controls fuel from 1/4 to 3/4 throttle.

[@Smegma_pirate]

came here to say this. some peoples kids eh?

[@cococouch]

Love the KOD soundtrack on it!

[@carlcolorado3549]

Not sure if you done this or not. Pop off the valve cover and take a look at your rocker arms. My buds mini were super loose! If you snug them down to where they move just a hair. Micro gap the motor will run better.

[@aintasgoodasioncewas5910]

Valve lash is .030 on the intake and the exhaust

[@randallvanpernis3614]

@@aintasgoodasioncewas5910 its .003 not .030 According to my CAM card. This is on a predator though but im assuming they are virtually the same engine.

[@aintasgoodasioncewas5910]

@@randallvanpernis3614 that's exactly what I meant just type it wrong appreciated though

[@ronwilliams2081]

can you tell me why i cant get my carb to choke start easily? i have to goos it to get it to start. what am i doin wrong????

[@tilvalhalla9343]

Does anywhere sell a Angled intake manifold adaptor that points the assembly back so when the bike falls the air filter and carb dont break on the ground?

[@nativejuicevapors]

More videos please

[@carlcolorado3549]

Rocker arm video would be good! Keep on riding bud!

[@mellostyx]

Yeah...maybe roller rockers, or ratio rockers! Definitely have to keep an eye on the valve lash, they run poorly when their all loosey-goosey

[@marcosborne4974]

Those carbs come with a 98 main jet. I just put a 130 in mine and it performs much better. The problem I'm having is with the pilot jet. Can't seem to get the idle right. It has a 15 in it.if anybody has any ideas I sure would appreciate it.

[@chriscollison933]

Where did you get the fork setup for your ct200U-c? I want that kit so bad! But anyways thanks fir the video cause I just installed with the 18lbs springs and pulse pump and top plate so I could move the tank to behind in the rack but only had a few minutes last night to try it and it started and was at like quarter throttle spinning the tire so I’m gonna try the jets I have with the kit! Thanks

[@Staysilly78]

What do you do with the linkage on top of motor

[@nashallison633]

What did you record this on a DVD player

[@hudsonmyers7404]

What size throttle cable cable should I get for a mini bike??cause I already have the Mikuni

[@henrymallett6847]

52 inch mini bike throttle cable. type that into amazon and you’ll find it it comes with the grips and throttle assembly too

[@madchanicsgarage2969]

Speaking through a CB radio lol

[@mellostyx]

Ha, yeah, I had some mic troubles...

[@ziggybammurphy1645]

I put a 22mm on mine and it goes straight to full throttle when started...im not sure if it has an airleak or what....

[@OFFCODEV2]

Adjust your throttle cable ..or your air mixture

[@ziggybammurphy1645]

@@OFFCODEV2 i think its something to do with the cable too...because when the cable isnt hooked to the throttle it idles ok...its a 40’ cable that looks to fit, but i was thinking the same thing....ill have to tinker with it. Thanks

[@marcosborne4974]

I'm sure that the slide was in backwards.

[@ianplaysbass]

Would this negate the internal governor removal?

[@Therealdacooter]

No. It's a good idea to remove the governor gear inside the engine when putting performance parts on them, because the gear has a nasty habit of coming apart at high rpms

[@deion601]

My minibike is going by itself with this carburetor on,why ?

[@user-rh4ul9sw9v]

Deion601 idle is too high.

[@ziggybammurphy1645]

I have the exact same issue...i was thinking airleak beyond the jets....did u figure it out?

[@flyinsohigh007]

I hear tuning these is a pain. What do you say and did it fire right up not messing with any jetting?

[@2002ZRX1200R]

These carbs are simple to tune. If you cant get the lag out via lifting the needle you need to raise the main jet size, and if you the idle mixture screw needs more than 2 turns you need a bigger pilot.

[@peytonthomas4506]

Please answer, where did you get the front suspension forks! I’ve been searching all over the web for something like that!

[@mellostyx]

I ordered them from Coleman. They weren’t cheap ($300) but they do make a big difference. Later this summer I plan on trying to mount some cheaper pitbike forks on my other Coleman. They are only $50-100 on eBay.

[@peytonthomas4506]

Unnecessary Upgrades awesome! Do you have any part numbers or links? I can’t find them anywhere!

[@mellostyx]

@@peytonthomas4506 Here is a link to the pieces needed to make the front suspension. I cant seem to find the full setup now either, but it looks like you can buy all the parts and put them together yourself. Or you could call Coleman and see if they will sell you a CT200U-EX front fork shopping.na3.netsuite.com/s.nl/c.3546502/sc.27/category.122618/ctype.SS/SS.122618/.f Or you could go with the Ebay Cheapo forks, but no guarantee they will fit on without heavy modification. Ill be doing a video on these in a few months. www.ebay.com/p/Front-Shock-Fork-Assembly-Honda-Xr50-Crf50-Dirt-Bike/1665856770?iid=122288743668&chn=ps Best of luck!

[@matthewdubay6409]

you know focus would be nice so we can see wtf is going on...