Jerryjerry05
Outstanding Contributor
[FONT="]1995 Mercury 75 hp. 17ft.Ranger Alum. bass boat.[/FONT]
[FONT="]I don't know how to set the timing and don't have a manual for the motor.[/FONT]
[FONT="]The motor seem to runs good and hitting on all 3 cyl, The linkage/throttle is advanced as far as it can go.[/FONT]
[FONT="]Yet the most it gets is 4100 rpm's and 30mph. at wide open and trimmed up.[/FONT]
[FONT="]The load is minimal and no soaked foam.[/FONT]
[FONT="]The prop was changed 6 mo. ago and then it would run 5200 rpm's at wide open and 45[/FONT]
[FONT="]mph.[/FONT]
[FONT="]Checked the timing and it's 12d at idle.(like I said I don't know the specifications for this motor)[/FONT]
[FONT="]??? the owner said it slowly lost rpm's and slowed down to the present speed.??[/FONT]
[FONT="]ANY ideas on why it would slow down??[/FONT]
[FONT="]My first thought was the flotation was water logged but it's not.[/FONT]
[FONT="]My second is the prop 18p.SS was the problem as he said it was changed.[/FONT]
[FONT="]ANY thoughts??? THANKS!!![/FONT]
[FONT="]I don't know how to set the timing and don't have a manual for the motor.[/FONT]
[FONT="]The motor seem to runs good and hitting on all 3 cyl, The linkage/throttle is advanced as far as it can go.[/FONT]
[FONT="]Yet the most it gets is 4100 rpm's and 30mph. at wide open and trimmed up.[/FONT]
[FONT="]The load is minimal and no soaked foam.[/FONT]
[FONT="]The prop was changed 6 mo. ago and then it would run 5200 rpm's at wide open and 45[/FONT]
[FONT="]mph.[/FONT]
[FONT="]Checked the timing and it's 12d at idle.(like I said I don't know the specifications for this motor)[/FONT]
[FONT="]??? the owner said it slowly lost rpm's and slowed down to the present speed.??[/FONT]
[FONT="]ANY ideas on why it would slow down??[/FONT]
[FONT="]My first thought was the flotation was water logged but it's not.[/FONT]
[FONT="]My second is the prop 18p.SS was the problem as he said it was changed.[/FONT]
[FONT="]ANY thoughts??? THANKS!!![/FONT]