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.