Ditto drglinski's post, I did the same thingsto my 105,and replaced the coil with a Bosch Blue from Kirk engines inc. What a difference, and was able to open the plug gap to .032" from .025". But what I also find helpfull is disengaging the hydro with the lever on the tunnel cover so the starter is'nt driving the hydro pump. Don't know if the 149 has the same feature or not. Good luck, Steve
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