TRRANGER Posted October 2 Posted October 2 Got another Optimax Motor question for you kind Sir. Serial Number 1B-722025 or IB-722025 2009 250 Pro XS. I am trying to locate the correct max RPM for running this engine. I am hearing 5500 to as high as 6000 but am not being able to get a definite answer on the exact RPM. I am going to be putting plugs in it and have always run NGK in my Mercury Engines is this a good plug for this motor. Thanks for the help.
fishinwrench Posted October 3 Posted October 3 NGK's are correct for the Mercs. 6000 RPM is what Mercury recommends..... because their hole shot is typically lacking......(and ONLY because of that)...But I prop for 5500 if the hole shot is good. 6000 is SCREAMING and I'd rather not hear my motor wind up that tight. TRRANGER, nomolites and tho1mas 2 1
TRRANGER Posted October 3 Author Posted October 3 2 hours ago, fishinwrench said: NGK's are correct for the Mercs. 6000 RPM is what Mercury recommends..... because their hole shot is typically lacking......(and ONLY because of that)...But I prop for 5500 if the hole shot is good. 6000 is SCREAMING and I'd rather not hear my motor wind up that tight. So 5500 it is and a new set of NGK plugs. Thank You Sir fishinwrench 1
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