[alanpolhoatzin]

Hello,

My crf250r 2004 was just rebuilt, almost all the motor, $2000 USD was the cost of the repair. I did the break in drive, it has now about 2 hours since the rebuilt, I changed oil and oil filter. My only concern is that I am not completely sure the mechanic did the rebuilt correctly. (I don´t have experience on 4-stroke bikes). The mechanic took 4 months for the rebuilt and had a few problems, he had to buy new valves twice. How can I know if the motor is adjusted and built correctly, in my opinion it ran great the 2 hours. If it was a bad built would I had noticed a problem already? It is very difficult to start when it is cold, when it is warm it starts first kick.

Thank you!

[staffy24]

lol full rebuild if you have the parts 3 hours if you don't have parts about 1 week $2000 sounds cheep but here in aus you would pay as much as $6000 but your parts are cheep like your dollar lol if it runs well then all you can do is wait and see did you receive a parts list ? and run down on the work done ? next time do it your self and then you will be sure

[riddler9]

No reason to need another set of valves unless he pooched the first. I take it he either did not do any machine work, maybe he cut the seats by hand at best?

$2k gets you a quality build with parts from a machine shop. If I had to guess, i would say you are not in good shape. Hard starts are almost always valve problems unless the carb is way out.

[staffy24]

your prices are so good for that alone i would like to live state side

[crfsonly]

check the valve clearances just to eliminate movement after break in. if set correctly, check your hot start cable and nut. check air boot leaks at head. report back.