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Old    Ron T (Laker1234)      Join Date: Mar 2010       05-07-2010, 6:07 AM Reply   
Anyone know the oil/gas mixture ratio for a 1995 Yahama 650 Waverunner? I am guessing 50 to 1.
Old    Pete (petrey10)      Join Date: Apr 2010       05-07-2010, 7:12 AM Reply   
well i don't know if it is just straight premixed, if the engine was just rebuilt, or if there is a pump on the engine also.... 50 to 1 would be as light as you would want to go and 32 to 1 will be as heavy as you will want to go.... I would do 40 to 1 but if its a new engine i would do 32 to 1 for awhile
Old    Landon (l_b)      Join Date: Aug 2009       05-07-2010, 8:13 AM Reply   
50:1 are for most chainsaws/weedeaters. I would go 32:1 to 40:1 like Pete said. I run 32:1 in my dirtbike.
Old    Derek (camassanger)      Join Date: Oct 2009       05-07-2010, 8:15 AM Reply   
I usually run 40:1 in anythiing 2 cycle. And I make sure to go full throttle periodically for some duration to keep everything working well. Otherwise, you can get gunk buildup and plugs will foul, etc. My 2 cents.
Old    Ron T (Laker1234)      Join Date: Mar 2010       05-07-2010, 5:58 PM Reply   
Thanks! My buddy runs 12 ozs. to 6 gallons and that seemed a little thin to me.
Old    Hate N Pain (hatepain)      Join Date: Aug 2006       05-08-2010, 8:12 AM Reply   
Just straight gas should burn that thing to the ground just fine
Old    Jeremy (wake77)      Join Date: Jan 2009       05-08-2010, 8:15 AM Reply   
Yeah I was thinking 32:1. One part gas, 32 parts of concrete.
Old    JUST-IN-TIME (justintime)      Join Date: Mar 2009       05-11-2010, 1:30 AM Reply   
yes 50 to 1 is good

i run 42 to 1 in all my ski's

also if you do that, you need to go 1 size up in jets, because your pre-mixing
Old    Pete (petrey10)      Join Date: Apr 2010       05-11-2010, 8:02 AM Reply   
at 32 to 1 you will start to see significant smoke at lower speeds (which is kinda annoying and prolly not good for you)... 40 to 1 will be about as close to perfect as you can get.... also at 32 to 1 some jetskis start to foul plugs.... 50 to 1 is way too light in my eyes so I use 40 to 1as a starting point and if I don't mind the exhaust smoke level there I might try adding a tiny bit more till the smoke gets annoying and intolerable... hope this helps

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