Clear things up for me *confused*

[RS2MATRIX]

What affect does moving the needle clip notch up and down have?
On NGK plugs, i know low numbers are hot and high cold, so does a colder plug make the engine cooler or other way round?
How do you test the mixture when the plug is only showing a dark brown colour?
I have two screws on the carb, one idle, one mixture, which way is leaner and which way is richer?
What could cause hard starting and cutting out?

I have a Reiju RS2

Nick.

[hmmmnz]

on thats a bit of a mouth full but we'll start with

1. needle clip position..... if you lift the clip, it lowers the needle, making it leaner in the mid throttle, if you lower the clip position it lifts the needle, richening the mixture in the mids
https://justkdx.dirtrider.net/images/graph.jpg


https://justkdx.dirtrider.net/images/Smaller_PWK_highlow_speed_animation.gif


2. a hotter plug will burn hotter and burn the fuel better, but you face the risk of burning holes in things if you go too hot though, chances are if you think you need to change the plug from what the factory has set, then there is something else wrong... over oiling???
putting a hotter plug in will just mask another problem


3.. carb screws, all the way in is lean, all the way out is rich

4. could be caused by any number of things...... dodgy coils, dodgy cdi, dodgy plug, dodgy mixture, valve clearances, timing, and a million other things..
have fun
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Wiring Diagrams BIDNIP it bitches

[stirlinggaz]

hi,
thats a lot of questions!
i presume your bikes a 2 stroke?
anyway if it is here what i remember :
1 : needle controls mixture at mid-throttle .
moving the clip on the needle up will make you run leaner
moving the clip down will make it richer
2: stick to the plug recommended in the handbook,unless someone can come up with a good guide to plugs?
3 : test your plug/mixture with a new plug. do a plug chop.
4 :where is your air or mixture screw?
if its at airbox side its an AIR adjustment screw & clockwise = richer.
if its closer to engine, it a MIXTURE screw, clockwise (seen some on the underside, so tightening it ) = leaner
5 : if its hard to start & cutting out, find out what the stock settings are for your carb & start from there.
when is it cutting out, ie at what revs?
is it idling too low? & running too lean?
im sure others will be able to help you further.
cheers,
GAZ

[garyd]

Thats the important bit .....whether the screw is engine side or air box side ones for fuel, other is air get it wrong and new piston time
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[RS2MATRIX]

[ms51ves3]

[RS2MATRIX]

Just an exhaust and kn style pod filter, What size would you recommend, as im without a bike at the moment awaiting top end parts so once i get them, ideally i dont want to mess with it anymore. thanks for your help.
Nick

[ms51ves3]

I'm really not sure as I've never really looked into it. Maybe try something in the middle of the 2 sizes. An 81?

I've heard that pod filters are very hard to set up though.

[RS2MATRIX]

[ms51ves3]

Jets aren't that expensive. Just buy a few going up in sizes of 5 and then once you get it running close to of them buy 2 sizes in the middle of them and then experiemnt with them. Eventually you will wittle it down so that it is running on the perfect jet.

[RS2MATRIX]

[ms51ves3]

Plug chops only really work for top end though so when you are doing the mixture screw and needle position it is all guesswork really.

[RS2MATRIX]