I have spark, the float and needle are good but i cant find the settings for my late 70`s early 80`s suzuki rm 250 2 stroke. i dont know much bout it but i know turns from all the way in, i dont know what 186 and stuff is for the settings

hi mate i had a rm 250 with the same problem, have you done a compression test, as mine had poor compression

sounds like you have a lower rod bearing failure,and ya that would cause it not to be able to kick start

try changing gas . dont forget to empty out carb bowl also check for spark might have a fouled spark plug .

32:1
Use good two stroke oil and re-jet if your spark plug color is to white or black. Should be around a chocolate color.

Either the float is stuck or needle/seat need to be replaced, or there isn't a strong enough or hot enough spark to burn the fuel

you can have your mix off, your air filter is plugged up, or you jets can be off pending your elevation.its possible your float is not set right or even a piece of trash on the needle valve that is dumping to much fuel. its definitely not your RINGS on a 2 stroke if it were a 4 stroke I'd say do a wet and dry compression test.Be sure you are using a quality oil as well.

You need to ensure that your fuel/oil mixture is correct. Roughly between 40:1 and 32:1. Usually if you mix is off, it will foul plugs quickly. You can also get a compression test and if it fails look into getting a top end done. Any motorbike shop will be willing to do it and is generally inexpensive. It would be cheaper to do it yourself, assuming you are somewhat mechanically inclined and have the service manual. Good luck.22