I have a 2007 trx 450er, and it is having problems starting, the starter has never been real strong and it just cranks and cranks until it finally starts, is there anyone else that has had that problem or do you think I have a bad starter or something? I have checked the battery and it seems to be good.

Thanks

could be your valves, check the clearance they could be off

Nope I have checked the valves several times and that is not it.

i had the same problem and it was my valves. you might not be getting strong spark. i would also try a compression test and see if its your piston(not likely), and your decomp if they dont work there are many other possible answers