I got yamaha DT50 sm 53 plate, is there a manual for this and what are the gears(1down, 4up?)

SOURCE: '95 Yamaha YZ 125 clutch - stays in gear when clutch is pulled in

the plates will stick to each other because of oil
check the clutch lever at the motor and make sure it is moving the arm that pushes the pressure plate and make sure it is moving

SOURCE: dt50 2004 engine dies after a couple of miles.Will

you should check the cooling system if you don't have one then your gonna have to deal with it unless its something else its a different problem but that happens to my 3 wheeler that has no cooling system

SOURCE: Yamaha DT50 MX Kickstart doesn't work

i assume the MX is a 2 stroke engine ! Those can be tough at the best of times but let's get it going 1st...This is a tiny lite bike sooo,turn igntion on, shift into 2nd gear and push that little devil until she pops sputters and starts. Now only use premium gas, clean spark plug regularly and use a premium oil, don't overmix....run that baby out in the field for an hour to clean her out...good Luck to you friend...Tim

SOURCE: how do youfind a serial number on a yamaha 125 dirt bike 2004

Should be stamped on the neck of your motorcycle or on the left hand side lower rail. Look on the neck, right side, under the dirt.

Where is the neck? It is the place where the front wheel assembly is fastened to the rest of the motorcycle.

Thanks for your interest in FixYa.com

SOURCE: the only info I have is that it is a yamaha

5V1 is 1982 SR 250 J http://www.cmsnl.com/yamaha-sr250j-1982_model8871/partslist/.This link will give you specifications and complete bike in exploded view diagrams. Pic courtesy bikepics.com. Cheers.