Hey dude,
What i would do is change the oil and fuel from the carb for starters.
Once the fresh stuff is in, and i presume you have already checked for end float, is replace the spark plugs, or if they seem in good enough condition a good clean and check of gaps will suffice.
Then take out the rotor arm and turn the engine over a few times (with the ignition). This will allow you to listen for any orrible clunking or knocking noises before the engine fires and gets warm. Also allows the oil to flow around the engine and get the fuel pump working.
Once you have turned the engine a few times, clean up the rotar arm and put back in the dizzy, checking its condition as you do so.
The engine should now be safe to fire and tune up from there......
Chappers
