Frustrated Yamaha Aerox 2013

[pink9]

Hi Im pretty new to this sort of thing but would welcome any feedback.  I was given a water cooled Aerox 2013 which had seized on the owner and then basically left to rot outside . I thought it would be an interesting project and it has been a learning curve because although I am a biker and decent with mechanical knowledge I had never worked on these 'twist snd go' bikes. So as you can imagine massive strip down, panels off, stuff cleaned, painted resprayed etc etc. Took the engine out and yes it was well and truly seized solid and I mean solid. 
So basically, I stripped it all down, new crank, bearings and seals all done beautifully in freezer and oven, new cylinder, piston, variator, clutch, belts, oil pump, carburettor, inlet manifold, reed valve, starter motor, new exhaust, basically replaced everything for new.  Original cylinder head seemed fine so put it back on. Got new battery everything ready for grand starting....and not a peep out of her.  Turns over beautifully with plenty compression, fat wonderful spark that jumps 20mm on the tester, fuel going into carb but therein Im a bit lost. Could the fuel be the problem? Where would you go from here. Is it the carb, the reed valve........... What do you do with a brand new carb? Ive read the manuals watched the vids on Utube, have I just missed something really stupid?  But there is not a glimmer of this engine wanting to kick into life.  Im lost as Ive chucked some money at it, resprayed panels, brand new brakes, tyres etc, it will look mint when put back together, but the engine just wont have it. Grateful for any hints or tips which I will try deffo!

just checked flywheel for TDC centre today and found that the woodruff key has sheared so will let you know how i get on after fixing this!!!

[aeroxbud]

Welcome to the forum.
I had an Aerox. And even riding bikes it was still fun. You will like it.
As you have so many new parts I would do a leak test first. This will tell you if the engine is sealing correctly. Two strokes hate leaks.
A few different ways to make one here 49ccscoot.proboards.com/thread/506

[geoffh]

Just from my own cock ups ,the arrow on the piston points to the exhaust (not up) always use fresh fuel,put the air filter on and complete the build before you try it,try some easy start after leaving the plug out overnight,keep asking.

Geoff

[pinkscoot]

I know how frustrating this can be. As Aerox and Geoff said this are 2 mistakes that happen with rebuild that will stop the scoot in its tracks. Here is a no start trouble shooting guide that Brent did that walks you through the common things to look for: 49ccscoot.proboards.com/thread/647?page=1. Don't be afraid to ask questions there are a lot of smart 2t guys here.

[pink9]

Thanks so much for your quick and really spot on advice, I decided to check the flywheel today and found the woodruff key sheared !! I will let you know how I get on when I replace it. I will run through all your advice in the meantime. Its great to have expert help really grateful thanks!!

[aeroxbud]

There shouldn't be any real force applied to the woodruff key. It's only for getting the timing lined up. So something is wrong there.
Glad you found the problem though. 👍

[pinkscoot]

No matter how big the problem is it's always a relief finding it.