bigtime_mcalpine
Regular Contributor
Morning!
we upgraded my sons fishing boat to a 15hp this week. Thing has some serious umph vs the Mercury 9.8 we had on there. Most noticeable power increase with more than one person on boat! Only one little challenge. Motor will only idle with the idle knob on side of cowling fully extended arguably beyond its range. This severely limits the throw of the throttle. At the same time I’m chasing what I think may be a related issue: while motor runs beautifully at full throttle in mid range it almost sounds like timing is off (it sounds bumpy if that makes sense). Lastly if you roll the throttle smoothly there is a whole middle zone where it sounds like mix or timing is set wrong. At idle it’s smooth, at full throttle it’s also smooth. Motor looks like it’s had some real TLC but I’m still in honking maybe carb cleaning is up first. Thoughts? Anyone happen to have a screen shot of the set-up procedure for throttle roller handy?
we upgraded my sons fishing boat to a 15hp this week. Thing has some serious umph vs the Mercury 9.8 we had on there. Most noticeable power increase with more than one person on boat! Only one little challenge. Motor will only idle with the idle knob on side of cowling fully extended arguably beyond its range. This severely limits the throw of the throttle. At the same time I’m chasing what I think may be a related issue: while motor runs beautifully at full throttle in mid range it almost sounds like timing is off (it sounds bumpy if that makes sense). Lastly if you roll the throttle smoothly there is a whole middle zone where it sounds like mix or timing is set wrong. At idle it’s smooth, at full throttle it’s also smooth. Motor looks like it’s had some real TLC but I’m still in honking maybe carb cleaning is up first. Thoughts? Anyone happen to have a screen shot of the set-up procedure for throttle roller handy?