Questions & Answers for: Yamaha WR 450 F down by sean paul

...the fuel/air mixture screw with no real results. screwed all the way in will not shut the bike down. I'm lost, please help sounds like a jetting issue. change the main jets starting from the ...

...it in the shop. YOUR COMPRESSION RINGS ARE WORN OUT AND NEED REPLACING OR YOUR PSSTON HAS MELTED DOWN THE SIDE 2009 wr450 riding home bike was running fine then slowly died nomally i would switch ...

...determine if it is on/ reserve/ or off Mate.When the tap is horizontal,it is off.When its pointing down,its on.When its pointing up,its on reserve.Time for fuel.Hope this ...

just bought 1990 big bear and I cant seem to get it in reverse. What is the sequence? down shift it into neutral then turn the reverse knob. while holding the reverse knob(still turned) down shift ...

...it up by the dip stick level before running it, you will overfill it. There is a drain in the frame down tube as well as the engine drain bolts and filter. Fully drained will take 1.1 ...

...rear for sprockets JD jet kits give you a few options I ended up using The red needle at 5 notches down up from 165 to 170 main. up from 45 pilot to 48 pilot You might just want to try a 170main ...

...abit of trail riding on the bike. any advice? in cases i've seen most people tie there bike down way too much. try tying down a lot lighter or get wheel tie down. if your hauling alone, cross ...

Put a new Yoshi pipe on my 05 WR450. Re-jet it but still bogs down in the low end and idles like it wants to die. issue with the needle valve? i cant figure out if it has too much air and not enough ...

down , but when warm will start on the button, thanks sean Hi mate have you checked valve clearances they may need adjusting on the intake side your describing a issue of either a leaking intake valve

...that delicate balance by changing air filters, camshafts or exhaust systems your performance may go down the and the engine may run poorly, you need to compensate the air-fuel mixture in the ...