Need help with my bike

i just got a 1988 Kawasaki ninja 600r.. the gear shifter sticks sometimes and i was thinking about changing the trans oil but not sure if thats gonna fix anything.. any suggestions? also, i wanna do an oil change on it but not sure how many quarts it takes.. anybody knows? please help... i'm new in the whole biking world but i like to learn everything i can and enjoy the ride!  

Nice thats considered vintage 20 years old. your motor oil and trans oil are one in the same just do an oil change on it. Buy a service manual...get the true factory one from kawi if you can but any is better than none. Since it's so old. change the oil then clean the shifter lever and all linkage going to it WD 40 works great. It's an old bike you may have some warm parts but it could also be a worn out ...bent... out of adjustment shift rod. after you clean it up and ride it again be real firm on the shifts even the newer kawasaki's dont like weak shifts. What exactly do mean sticks ?  

i am a new rider i bought this bike for 500 dollars and i cant get it to start it is a 91 yamaha fzr 600 the motor turns over easy by hand so it is not locked up i replaced the starter solinod and had the starter checked the start will not turn the motor over can anyone help me?    

A bike this old will have a history. Let's start at ground zero. Are you "hot" to the starter switch? Are you hot everywhere else you need juice? This sounds like a classic case of a old bike that needs love. Don't give up! The problem will be minor. Keep looking! Buy a decent voltmeter and chase the problem down.

Admittedly wiring or continuity issues are one of the hardest things in the trouble shooting world. It takes a little time and patience but, it can be fixed! Once you get the bike running, and you will, do yourself a favor and ohm the coils. They'll need it! YOU CAN DO THIS!!!!!  

ok thank u so i figured it out the gear in the starter was missing three teeth so it would bind up so i got the fix now i need to figure out how to time it i have it turning over but it wont start it just back fires so if u have any advise i would be very great full  

Make sure the plug wires are hooked up to the correct cylinders.