After doing a little research the Factory jetting for your 97 RM 125 is a 172 main jet and a 50 pilot. Now after a little research on my part your highest elevations there in Ontario is 693 meters or roughly 2200 ft all the way down to sea level. So based off of that information the factory jetting should be spot on. The even the factory air screw setting of 1.5 should be pretty close but even then that should be adjusted per the day time temp to keep the bike running correctly. But its a good starting point. The factory jet needle position is the number 3 position and should be the right setting for where your at in elevation.
Now tell me what the bike is doing or not doing.
Does it run?
Does it start easy? (engine cold, fuel on, Choke on) it should start with in 1-4 kicks.
Does it idle on its own with out opening the throttle?
Now tell me what the bike is doing or not doing.
Does it run?
Does it start easy? (engine cold, fuel on, Choke on) it should start with in 1-4 kicks.
Does it idle on its own with out opening the throttle?