I am going to see one of these bikes today, However dont much about bikes. What do i need to look for when i see it, to check if it is a good bike? . He says it is in excellent condition and for 3500dollars

-Look at the wheel alignement at the back and see if front and back wheel are in a straight line.
-Check the steering and look for any sign of bent on the forks.
-Start the bike and observe how it idles.
-Revs the bike and look for any sign of misfire or engine cut off.
-Apply brakes to front and rear and observe if it goes down more than necessary,which could be either signs of brake pads or air in the brake the fluid system.
-Check all road legals issues, like tyres,horn, indicators,horn etc.
-Check the mileage and work out if it is genuine.
-Test the bike and observe if there is any sign that the steering pulls to one side and also when braking.
-If you could, then do a compression test to see if there is any sign of damage to barrel or piston or rings.
Hope these helps.

Normal 0 false false false MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman"; mso-ansi-language:#0400; mso-fareast-language:#0400; mso-bidi-language:#0400;} Know that most shops will probably refuse to do repairs on your bike if it is more than 10 years old. Most all shops use this same standard. Parts availability is the main problem. In any event, below are things to look for if getting a used bike.

Does the engine start easy and idle smoothly? Does it accelerate without hesitation?
Any smoke when it starts or when pulling away from stop light? (Bad valve guides).
Any smoke when riding at 30mph? (Piston rings worn or possible previous seize up).
Does the clutch engage and disengage smoothly? Clutch lever easy to pull?
Any oil or coolant fluids leaking after a ride?
Do all gages work? Lights, horn and flashers?
Any red lights on the gages lit up? Any computer codes flashing?
Do front and back brakes operate and stop smoothly?
Is the motor oil pretty clean or really dirty? (Sign of how well the owner has cared for the bike).
Is the oil "white-ish"? ( water in the oil. If motor is water cooled it's usually bad seals on the water ).
Any funny sounds from the gear box? Anywhere else?
Does it shift smoothly up and down the full gear range? Neutral light come on properly?
Sprockets still have rounded tips not pointed? Well lubricated chain?
Good tires? How old is the battery? All lights work properly?
Is the upholstery good? Plastics cracked or broken?
Gas tank badly rusted inside? Do the wheels run true or weave?
Do the forks look bent from a side view or front view?
Does it drive nice or is the bike squirrely to drive? How about around curves and corners?
Ever been wrecked? What service work has been done in the past?
With the handlebars driving straight ahead, is the front wheel pointing a slightly different direction?
Do all accessories work properly?
Ask what doesn't work on the bike. What known problems do exist?
.
These are things to look for. I hope this helps.
A “very helpful” rating for this answer? Thanks!

Put a gravy bar in on the inside of the part of the gascket

That is a lot of $ for a 20 year old motorcycle. I would expect it to be in near show room condition and a very few miles. If it is and you purchase it, you MUST replace the rubber and get it professionally tuned up.

I paid 8K for a 2008 model Honda loaded