I'am almost 99% sure on is down and reserve is up, it is marked on mine, i just checked my service manual and it does not say...but it is a service man not an operators manual. One way to find out is to fill the tank and ride it for a while if you are still running after like 5 miles you are prob on on not reserve. ALWAYS close petcock when not riding bike, I run my carb dry every time but this is anal behavior, but I have not had to rebuild my carb again ever, a good hint is to use "stabil" fuell stabilizer in every tank of premix, again overkill but it has worked well for me. The manual is availl on MRA website. I can check any specs for you in mine if you ned it. I use 25:1 mix per factory specs, many will sugest a leaner mix but I go with stock. I use Honda brand two stroke oil and brand name gasoline.