ys624t poor performance under load

[teddy]

My 624 breaks down under heavy load at any distance. If it's working hard for only a short spurt it's fine but for any distance it's starts to spudder enough that I have to stop and let it clear. The air temp. seems to affect this behaviour, the colder it is the better it runs. I thought it was water but now I'm not so sure.
Any ideas ???

[Benny771]

I believe you have to start at the basics.
 Compression, carb(fuel), weak spark, Make sure the govener arm is moving when you load the machine.
Also, for a "cheat test" try an ounce of 2 stroke oil in the fuel tank. Note any changes.
 Then report back here.....

Cool !

[Northern...er]

Yes, start w/ the basics; it's always worth cleaning the carb bowl/ take the carb off & do a complete cln-up if nec AND ALWAYS use clean, fresh gas...