your mixture is not right or sumthin, my MDS 40 was lke that on take off one day, i took off and got a deadstick, she was only like 4 ft off the ground. I brought it back, a guy came over, helped me out. We ended up changing the glow plug and reset the mixture because the heat change compared to last year.


also if i dont let my mds warm up enough, it will sputter and evertually die when i give it full throttle