Its 19 to 22 newton meters on a torque wrench. It should say in the manual under section 'torques'.
to answer your question my sons derbi senda r does 55mph with me on it and im 14stone but remember it is unrestricted and if you upgrade to a 70 or 80cc kit it will go even faster
there is a restrictor in the carb try tht
Should be just after the postive output from the battery, fuse is a 4amp and should be just a couplr of inches from the battery
It may be your stator, coil or even your spark plug give these a go if your stator isn't giving enough power it won't give the electrical charge to your coil Try this it may be the problem
Mitsuo Senda was born in 1940.
Senda prohibida was created in 1957.
Sadaaki Senda died in 1908.
Kakou Senda was born in 1924.
Kakou Senda died in 2000.
Senda Berenson Abbott was born in 1868.
Senda Berenson Abbott was born in 1868.
Senda Berenson Abbott died in 1954.