HI guys not really-related but it's Chinese engine-related which i have found some similarities.

I have good compression, good spark, and the carburetor works (its brand new).
Following videos on YouTube, it seems that with chinse motors ditching all the unnecessary wires fixes these Chinese engines. But i am finding with that ATVS in the videos dont have a rectifier and a little more simple.
I have a Raider mini - 90cc motor with the following wiring diagram, can anyone give me a diagram to follow so i can straight wire the thing so i can cut out all the unnecessary stuff that might be causing an issue of not starting.

 

That diagram shows the simplest starter set up you could possibly have so leave it, and fix whatever fault it has. Thick red, direct from battery pos to solenoid, thick red/white from solenoid to starter motor, when solenoid operates it connects these together. To make solenoid work, green from solenoid goes to earth and red/yellow comes from start button, presumably in the "electric control switch." Only oddity is the red/white shown going from ignition switch to join with that red/yellow, I can't see why that is there.

 

Okay, thanks for that information, i wont go messing with the wiring like youtube was telling me.

I am super confused about what is wrong with it.

I replaced the carbonator (because the jets were buggered), there is good flow of fuel, good spark, (seemingly good compression sucks my hand).

I can spend 60 minutes trying to get it running.... it randomly runs and when it runs it runs perfectly. After running it for 5 minutes and trying to restart it..... it just doesnt want to turn back on.

No idea what is wrong with it..... maybe i should compression test it ?

Any help guys.

 

Sorry, but your initial post saying "I have good compression, good spark" led me to assume you had a starter problem, as good spark indicates ignition is fine. Good compression means at least 90psi, any less and bikes get bad to start. Change the plug, it could be that simple, but it may well be an ignition fault is causing the problem, so do the help diagnose stator tests, preferably just after it has failed to restart. Check your carb is fitted correctly, no air leaks to manifold, and engines need just the right air/fuel ratio, if your carb is set well out, it will be bad to start.