hey guys | Personal Water Craft Forum in this thread in this sub-forum in the entire site Advanced Search Cancel Login / Join What's New Forum Listing Marketplace Showcase Gallery Advanced Search Members FAQ Dark Mode Menu Log in Register Home Forums PWC Jetski Specific Forums Yamaha Jetski hey guys Jump to Latest Follow JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding. 1 - 3 of 3 Posts B badfish88 · Registered Joined Jan 29, 2010 · 2 Posts Discussion Starter · #1 · Jan 30, 2010 Only show this user ok ive searched ths forum and found a bunch of usefull info but id like to here it all at onece just to be sure. ive never owned a wave runner. but i have ridden them alot and rented. im also quite mechanicly inclined when it comes to boats and cars. not so much these. and deff not 2 strokes. Any way i was on craigslist a week ago and am now inthe process of buyn' a 2000 yami xl800. with 58 hrs on it. the guy is the second owner and claimes he babied it. no scratched scuffs, and never had to take it in for service. From what ive read so far these models need "power valves"?? replaved with the wave eater ones?? Ive also read on here that the oil injection systems often fail and it is a better idea too run pre mix wich the majority of you guys say 32:1 Question is-- are these mods very necessary or just a reliability thing. im not looking for a dragster just something reliable to take my wife out on. Do they come with flush kits on them already? as it will be primarily a sallt water ski. What other maintenance do these require? pump oil or other fluids or that nature. And last. if i take care of this thing will it last a while or am i S.O.L with a 2 stroke? Thanks for all the info and thios looks like a great forum Save Share Reply Quote D D.Fox · Registered Joined Feb 2, 2010 · 4 Posts #2 · Feb 3, 2010 Only show this user Personal opinion ski is great my buddy rides salt water creeks with us same ski never any probs as far as 2 stroke and being mech, inclined best and easyest way to go cheaper to fix and less probs. if u have a manual and a decent mech a brease to work on and yamaha skis do good in salt if you clean them after every ride golden and ya they come with a flush kit. go ahead and put a restricter plate on it and pre mix the gas plate is like 15 bucks and easy to install not for race purpose saves the motor if injector fails if oil stops for 2 secs time for a rebuild good luck man any ? reply back and ill help Save Share Reply Quote L ltlehman · Registered Joined Jan 30, 2010 · 33 Posts #3 · Feb 4, 2010 Only show this user Nothing wrong with 2 strokes Yamaha uses power valves (YPVS) on water cooled 2-stroke engines to control the exhaust ports on the cylinders for maximum power and torque. The valve are located on the exhaust side of the cylinder towards the top of the cylinders. The look like small square boxes and have rods running through them for control by the servo motor. These Yamaha units are very reliable when used sensibly: warm it up before going full throttle; vary your speed and do not run full throttle for long periods at a time. Don't be afraid of the oil injection system but verify that all the oil lines are securely fastened. These oil systems are usually very reliable - I use the oils injection on mine. Spark plugs tend foul a little easier on 2-stroke so don't be afraid to change them often. Hope this information helps! Save Share Reply Quote 1 - 3 of 3 Posts This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread. Insert Quotes Quotes Post Reply About this Discussion 2 Replies 3 Participants Last post: ltlehman Feb 4, 2010 Personal Water Craft Forum A forum community dedicated to PWC owners and enthusiasts. Come join the discussion about performance, modifications, troubleshooting, maintenance, for all SeaDoos, Waverunners, and Jet Skis. Full Forum Listing Explore Our Forums Yamaha Jetski General PWC & Jetski Discussion Kawasaki Jetski Sea-Doo Jetski PWC Jetski Classifieds Recommended Communities Raptor Forum 74K+ members Yamaha R6 Forums 120K+ members The Chevy Equnoix EV 80+ members Join now to ask and comment! Continue with Facebook Continue with Google or sign up with email Home Forums PWC Jetski Specific Forums Yamaha Jetski Home About Us Terms of Use Privacy Policy Help Business Directory Contact Us Grow Your Business NEW RSS VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada The Fora platform includes forum software by XenForo Forum software by XenForo® © 2010-2019 XenForo Ltd. Top