New Engine Won't Start

[GoKartNarc]

I have a brand new never started Predator engine 212cc. I took out the stock valve springs and installed the 18lb. ones. I used a feeler gauge to set the throttle at 5000th of an inch and the exaust at 7000th at an inch. The engine is going on a Coleman BT200X minibike. It has a torque converter too. After everything was together I tried pulling the cord to start it and it wouldn't pull. It went a bit than it stopped. It felt really tight and would not turn. What am I doing wrong?

Thanx
GoKartNarc

 

[Karts of Kaos]

I think that your valve is to lose it needs a tighter clearance, like 2-4 thou. so your compression release is not working.

 

[GoKartNarc]

I was doing some research and they said before you swap out the springs to make sure the piston is center and I never did that. Do you think that could be the problem? And how do I fix that?

 

[itsid]

well turn the engine over to TDC on compression stroke
and reset the valve lash

there should be a small mark on the flywheel that lines up with a mark on the air shroud (at least that's what Honda and some clones do)
Or, remove the spark plug and the head cover
use a dowel to see the piston going up and down while observing the valves moving
at the highest point of piston when the valves haven't move before nor after you're on compression stroke
rotate back to find the highest point of the piston and then set the cvalve lash again

'sid

 

[GoKartNarc]

Thanx alot Sid! I will try that!