Looking for tech tips to read and equp ment to have. 130 hrs on the ski and been a couple years since it's been on the water. Last i remember it wasn't able to reach full throttle or above 5000rpm. The carbs were rebuilt a couple of times at " a pro shop" and would run ok for almost a season. Cranks in drive way and I plan on doing carbs and fuel lines and filters. I inherited the ski last year and can work on it now. I'll check compression and change rave valve bellows and orings as I see a leak. The pics of the plug is before cranking. Not sure if this looks bad. Any help in direction greatly appreciated. I don't plan on taking to a shop yet as I've been had for around 1500 green ones between the 2 shops and the ski ain't worth another 800 unless I'm buying parts and doing the work.