1997 Yamaha 30HP Question

[9632587410]

Hi All<br />Ive got this 97 30HP Yamaha Oil Injected 2 stroke long shaft . It has hardly any hours on it . It runs really great but ( always a BUT) I use it for trolling in the river here and it seems to load up (rich) at low ( above idle to 1/8 ) throttle . Like its missing a bit and I can smell its getting to much oil or seems like it .<br />Is this something the dealer should undertake or can I mess with it ? It seems to run fine above the mentioned throttle range . Any ideas or comments are appreciated . Thanks <br /><br />Jeff

 

[Yepblaze]

Re: 1997 Yamaha 30HP Question

Don't think it is too rich in the oil department. <br /><br />Probably just running a bit rich "fuel wise" in the transition between the idle circuit and the main metering circuit.<br /><br />Maybe age is taking it's toll, albeit, what would seem too soon. If you use it for extended periods at low RPM's it may need a decarb treatment to loosen up the rings. <br /><br />Now for tuning..... You might take it in and they might suggest a tune up, decarb, and perhaps even a carb rebuild. Not sure they would even mention or do any rejetting for you.<br /><br />I might suggest you look to see if this motor has primary jet(s) in the carb(s) bump it (them) down a notch. (By Number) Couldn't hurt, at least, getting in there and giving the carb a tear down, wash out, and blow job, along with a fresh set of plugs.<br /><br />This, although is not your motor might help somewhat.<br /><br /> http://www.frontiernet.net/~bob_aloo/Carbclean/CarbClean.htm