Ktm 50sx help

I'm assuming it has a good spark on the plug, they come pretty rich (the old ones were even worse) so they do foul plugs. First, make sure you're trying to start it on a stand, the clutch drag with the rear wheel on the ground will make it hard to start. Second, try starting with the choke on and don't give it any throttle. My grandsons won't start cold if you give it any throttle. One other problem these things have issues with the the carb vent lines getting plugged and preventing them from starting, so double check the vent lines.

As for the kickstarter, that has to be the return spring. Not much else would prevent it from coming back up.

You sure it had oil injection, if it's a SX it shouldn't have had it. The only ones that had oil injection would have been the minis.

Good luck.

They do not like heavy foot for starting
the gear breaks easy and no return

Ha, I just got what I believed to be a good deal on a 2013 mini. Ran nice, could tell the PO hated it. I could see it needed a little TLC. paid 1400. and extra 1700 later, my kid finally got to ride it. Deep breaths.

I have heard about the kickstart gears. Heard 2 guys talking about how they swear you can have the bad one and a new one in each hand and not be able to tell the difference.