Thank's a lot,this really clears things up for me on a Dellorto carb I was having trouble adjusting,just wasn't sure why the idle wouldn't come down after a rev,now i get it.

Nice video buddy. Very clear and simple instruction.

Mate love this video tuning my 172 zip been a bloomin headache this video made it much much easier

Thanks. Great video. Crystal clear. Gets it drummed into the noggin easier.

Best vid on this subject to date, big thanks Sticky!! I'd be keen to learn more about that powerjet set up too...

most excellent vid - less is more comes to mind, a 2 smoker can tell you whats wrong if you just listen :)

great video mate

Cheers,best vid,and I’m a dirt biker !...

good video, good explanation

Thank you and Well done

Brill thanks bud 👍👍👌

Hello, I have a problem, I have a Peugeot Speedfight 1 100cc that recently seized up/heat seized. It was not tuned. I then changed the cylinder, piston etc. It now starts up right away, but after a while it dies all of a sudden (as if you had turned off the key) and then I can start it right up again, this usually happens when I go over 60 km/h or uphill. When I changed the cylinder etc, I also cleaned everything thoroughly, such as the carburettor, intake, new air filter, new fuel filter (there was no fuel filter before) new spark plug. I also removed the oil pump and put a metalplate with a gasket over the hole instead, I now mix the oil directly into the gasoline. Some other info that might be important. - When I drive over 60 km/h, it starts to make a noise from the variator (CVT), it´s sounds quite a lot. - When it died, I tried to start it again while it was rolling and then it started right away, but it made a noise from the variator, like something "let go" that had been seized up, like a rubber sound, maybe from the belt. - The variator belt touches the variator cover on the inside and has grinded a cut in the metal. - In the variator, where the weights are, the belt does not go down to the bottom of the wheel. - The clutch bell had turned blue from the heat. - The place where the connecting rod attaches to the crankshaft had turned blue from heat. - There was no fuel filter on it before. But i now saw there is an internal fuel filter in the gastank, can it affect the vacuum if you now have 2 fuel filters. Please help me. Regards Andree.

excellent thank you. I'm actually trying to tune my Dell'Orto VHSB34 on Rotax senior evo kart.

Perfect...cheers buddy ":0)

Awesome, thanks

I have a 2010 Aprilia RS 125. Can you do a video showing what the jets look like and their names please

Hi on my gurtner carb you turn it right towards fuel and left for air nor the other way round

Got bike runninging much better 👍😁👍

What jet sizes are you running ? What type of engine? cheers from across the pond!

Good description of this. Does that screw ever come loose with vibrations? It seems very easy to turn?

Hello, at idle the trottle let a little bit air through? and the needle let fuel through?

Is that a power jet ?

Thank you so much for this ! amazing. All this has to be done with the engine fully warm right? maybe after a ride?

what is tick over?

2 strokes are so annoying to set up I have the idle perfect when it’s hot but it’s hard to keep running when cold as the idle is lower I can’t seem to get a perfect balance on it unfortunately guess I’ll just stick to blipping throttle when cold

when u turn out the air screw u make the mixture leaner not richer.if cant adjust it properly then try different angle needles.

I have this problem and don't know how to adjust them properly. Atm mine goes grear up to 10/h but when I give gas it goes slower and if I gave more gas it dies... please help😢

Dude that sounds pretty off par all the way through my thoughts you need to learn it up by 1 quarter to on half turn then play with idle screw sounds much cleaner there's also a differance when under throttle been ridden just my opinion I think your a bit of par there decelerating you should always have a slight slowness to to deceleration not bam straight down I believe your happy medium is slight,y ascew just my opinion mind you what size engine are you working with for a start

Any response on this video still guys need some tips here

Don't listen to this guy at all.. he's got them backwards... Your idle screw (witch u can tell easily when it's off by screwing it all the way in or out and seeing that it moves your needle in the center.. this screw will always located center of needle) and your mixer screw will always be on the outer side.. this will control air mixer all the way in will shut off air, all the way out will increase air flow.. mixer screw will never move the needle in any way.. also.. if u notice that your mixer screw runs best all the way out and is alittle loose then u need to replace your pilot jet by one step down.. same vise versa.. if it's all the way and runs best with no air you need to move to a bigger pilot jet... Your welcome...

On 2 stroke its regulate air Flow. On 4 stroke it regulate fuel.

too much talking too fast and crapy pronunciation but thanks anyway

Think i have an issue with the idle screw... I can screw it out all the way... does nothing... if I screw clockwise all the way then it starts to increase rpm.. it's a phb21 ... think it's not ok calibrated. Thank you for your answer.