hello guys, sorry for my bad english, i found this awesome forum and i hope maybe some one here can help me. so right now i rebuild my Runner 200 ST, the problem is on fast acceleration the engine is moving forward and back, but if i run on 30 kph and accelerate everything is ok, so i change number 15 part and 16 on the swing arm and number 11 on engine case after that my scooter felt better on accelerations but still not perfect, now after i did some upgrades on engine and the acceleration is more fast this problem is back, some one told me to change the whole swing arm, from youtube videos i didn't see other Runners engine move forward and back, any ideas what is my scooter problem? its not like the engine jump forward but move and almost touch the fuel tank because the engine now is long by 1 centimeter, the whole frame and engine block are original if you guys dont understand my problem i will try to make video of it, thank you very much! Vadim
If the engine moves sideways a little it is normally the swingarm bushes that are worn. Change parts 3, 4, 5 and 6 in the first diagram
