ENGINE:
                 
                  Check 
                    the oil prior to starting, is it clean? or at least filled 
                    to the right level? Check the coolant (if applicable) is it 
                    filled properly? Check the air filter if possible. After all 
                    the checks, start the motor...does it run smooth? Any visible 
                    smoke coming out of the pipe(s)? Does the throttle rev smoothly? 
                    Any odd noises coming from the engine, like valve ticking 
                    or coughs, spits, or sputters? Does the clutch engage easily 
                    and does the shifter click naturally as you go into gear? 
                    (many bikes have a side stand safety feature that prevents 
                    the motor from going into gear while parked, raise the side 
                    stand before doing this...and then put it down while it's 
                    in gear/clutch in to see if the feature works). Check for 
                    oil leaks around the motor, any trails of dust/dirt build-up 
                    at any of the joining parts? 
                
                TIRES:
                 
                  Are they 
                    new?Decent? Worn? Look for any hairline cracks in the sidewalls, 
                    this is an indication of replacement time regardless of tread 
                    depth.
                
                BRAKES:
                 
                  Check 
                    the pads and look for the wear indicators, most pads have 
                    a groove carved into them and if this is gone the pads are 
                    thin, needing replacement. Also check the rotors, are they 
                    clean and smooth or filled with grooves? Drum brakes often 
                    have an indicator mark on them, when the pivot arm is aligned 
                    with the mark it's time for new pads.
                
                STEERING:
                 
                  Does the 
                    front end bind at any point during full motion, from left 
                    lock to right lock? Do any of the lines and cables pinch at 
                    any point? If possible, raise the front wheel off the ground 
                    (center stand/hold the rear down or a car jack) and grab the 
                    lower forks, yank forward and aft to check the steering head 
                    bearings. If there is any play they'll need some work.
                
                FORKS:
                 
                  Are the 
                    seals leaking? Telltale sign here is a grime ring above the 
                    lower, the seal pushes the dirt and leaking oil up and it 
                    collects at the end of the travel distance. If the bike is 
                    already clean compress the front down a few times and run 
                    your finger along the fork tube, it should be dry all the 
                    way around. Any slippery feeling or noticeable oil indicates 
                    new seals are needed. Also are the forks straight, no dings 
                    or dents or any other damage?
                
                SWINGARM:
                 
                  Is it 
                    on solid? Jack the rear up (center stand or car jack) and 
                    grab the swing arm by both sides and try to move it from side 
                    to side, if it moves new bearings are in order.
                
                ELECTRONICS:
                 
                  Test all 
                    the lights, bells, and whistles...high/low beam, directionals 
                    front and rear, tail light and brake light, horn, indicator 
                    lights (such as neutral, turn signal indicator, high beam 
                    on, etc).
                
                GAS 
                  TANK:
                 
                  Is it 
                    clean inside, no rust or other deposits? Does it smell like 
                    fresh fuel or is it dingy and toe curling? Does the gas cap 
                    pop off and on easily?
                
                DRIVE 
                  SYSTEM:
                 
                   Is the 
                    chain tight or loose? most bikes should have 1/2" to 
                    an inch of slack at the center point of the chain. Is it lubed 
                    or dry? Are the sprockets good? The teeth should be tapered 
                    to a squared point and even, if they are pointy or broken 
                    they need replacement ASAP. If the bike is a shaft, check 
                    the oil level in the transfer case. If it's a belt drive feel 
                    the snugness of the belt and examine the lugs in the pulleys.
                
                RIDER/BIKE 
                  FIT:
                 
                  Does the 
                    bike fit you when you're sitting on it? Can you stand the 
                    bike upright and plant both feet firmly on the ground, heels 
                    and all? Can you do the same with the bike on its side stand? 
                    Can you reach the pegs comfortably and work the controls? 
                    Do your elbows dig into your ribcage during full left to right 
                    turning motion? Can you pull yourself off the seat via the 
                    handlebars without having your feet slip off? All this can 
                    be modified later via the aftermarket, but it's always nice 
                    to be able to ride the bike right away...
                
                TEST 
                  RIDE:
                 
                  Don't 
                    expect this, many owners won't allow it. You may need to strike 
                    up a mutual bargain here, let the owner hold the cash and 
                    you hold the title while you ride it, if you dump it it's 
                    yours and if you like it you don't have to come back! Or you 
                    can ask the owner to take you for a ride as a passenger, at 
                    least you can feel how smoothly it works. You'll want to see 
                    how smoothly it accelerates, does it bog at certain revs? 
                    Do the gears change smoothly? Do the brakes work smoothly? 
                    Do the wheels/tires spin smoothly and straight?
                
                INSURANCE:
                 
                  Check 
                    on this before any bike (new or used), can you afford the 
                    rates? If you're 21 and single and looking to get a ZX-7 Ninja 
                    or a CBR 600 don't expect a fair rate, $3000+ per year (and 
                    that's for used bikes, new ones are even more) is a common 
                    rate for sport bikes in this age bracket, assuming the company 
                    will insure them at all. You can get better rates on bikes 
                    that are 7 model years old or older, the next break comes 
                    at 25 year old riders and again at 29. You don't want to bring 
                    a bike home and then find out you can't afford the insurance.