Pyro

Hey! Richard from Australia been into motorbikes all my life but new to quads ..just picked up a kawasaki klf300 98 or i think you guys call it a bayou ? Any ways it an older model so needs a bit of tlc and looking to spending a bit of time on it doing it up a bit and looking for a service manual for it if anyone could help out where i might be able to download one or even buy it. Thanks

How often should you do this...every couple of years say?