I fix and sell Yamaha outboards. If they are within a few years, You will be able to plug and play with no problem. If you have any questions send me a PM and let me know!
I do it for a living. Change your gear oil! Grease ALL fittings! Grease prop shaft! Spray your power head with CRC (anti corrosion)! FOG your motor out.
Don't waste the tune-up until the spring time.