Gixan will know more about what to look for on K4's. I'd look carefully inside the tank for rust as a new main fuel pump filter is $300. Next what mods does it have? This could be turn signal modification/removal, fender eliminator, aftermarket exhaust, rearsets, power commander, chain & sprocket, etc. etc. Is the bodywork original or has it been replaced, presumably because of a fall. Was it raced? Any road rash on engine covers that would happen in a fall. But these are things that apply to KTM's and Aprilia's so you ought to already know about them. It would be nice if you could measure the compression but, at 7000 miles, it ought to be fine. What's the general condition of the bike, i.e. has he kept the engine & radiator clean. Is the chain rusty? Is the air filter a Suzuki part? Does he have a maintenance log? Any strange sounds or warning lights when you start it?
"englisch is not my mother language" So you've snuck across the border from South America or Canada, eh? Just teasing!
"englisch is not my mother language" So you've snuck across the border from South America or Canada, eh? Just teasing!