longtime coming said:First, look at the general condition of the bike. Is it clean? Does it look well cared for? Does it seem to be missing parts, have broken off bolts or signs of obvious abuse or neglect. Get it on the stand (box) so you can get the wheels off the ground. Spin the wheels slowly, feeling for smoothness in the bearings. Grasp the wheels top and bottom and push/pull to figure out what kind of shape the wheel bearings are in. While you are there, check the spokes, are any loose, missing, or unattached to the rim. Turn the handlebars slowly side to side with the front wheel off the ground to feel for roughness in the steering head bearings. Push and pull the forks front to back to check for slop in the steering stem. Get the back wheel off the ground and lift the swingarm up and down to check for slop in the linkage and shock mounts. Push the end of the swingarm side to side to check for slop at the swingarm pivot. Look at the chain and sprocket condition (both sprockets). Look at the shifter and shifter shaft and kickstart and kickstart shaft. Apply side loads to the shaft. They may move in and out a little but should not move side to side. Look for cracks in the frame at the steering head and down low behind the engine and below the swingarm, also under the seat both sides. Does the pipe have dents? Small dents don't matter, lets say as big as an egg or so. Pipes with large dents or cracks will have to be repaired or replaced. Sit on the bike, hold the front brake, compress the front suspension. Is it smooth and quiet? Jump on the seat. Is the rear suspension smooth and quiet. Does it have dampening, or does it just bounce? Does it look like there is any brake pad material left? Are the rotors smooth or scored? Are the rotors bent? You wlll feel bent rotors while braking lightly, and will see them if you look at the edges carefully while spinning the wheels. If you can, take off the left engine magneto cover and grab the flywheel. Try to move it side to side. There should be no play. You are checking the crank bearing. This is important. Hopefully the owner will take the cover off for you to show you how tight the bottom end is. Look for oil in there, behind the flywheel. It should be dry and clean. If it is oily looking, a crank seal is gone. I may have missed something important. But anyway, if you are now satisfied that this is not a piece of crap, then start the bike. If you don't want to start it, then ask the owner too. He should be able to start his bike with 1 to 3 kicks cold. A KDX will make a rattling sound from the right side. This should just about disappear with the clutch pulled in. Don't worry about it, it is normal. Piston slap sound different, and says the top end needs to be done (not too hard or expensive as long as the crank bearings are not shot, and that has been checked already). The bike should accelerate smoothly and with some authority. Shifting should be positive up and down. It should not make funny metalic crunchy noises down there. It should not fall out of gear. The clutch should engage smoothly without shuddering. Be patient, look around, there are lots of good bikes out there, and dirt bikes are surprisingly tough. I may have missed something important. Someone needs to proof this. Hope this helps. Regards.
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?