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I've done that and I can look up parts and stuff, but I don't think I ever got an actual year of the motor. Thanks though and I'll try again.

Idle speed is not set by timing. Idle speed is set by the idle adjusting screw. If you follow the link and sync correctly, you set the timing and carb adjustments separately. Yes, the timing and the opening of the carbs are syncronized together, but timing does not determine idle speed. I...

Google the specs for link and sync for your motor. You should find simple steps that won't require a tach. Basically, it's making the carburetors open when they are supposed to and the timing advance when it's supposed. Contrary to another response, it will also explain how to set idle timing...

He initially stated that his max RPM's were 4200. It wasn't until later that he told us about his "magic ears" being able to tell the RPM's by sound alone. I will have to admit, I've wasted a lot of money on props that didn't do what I was looking for. When I give prop advice, I'm trying to...

I'm sure you can find the specs for your motor and the testing procedures for each one of those items online As fas as reading resistance in ohms, your setting will depend on what you're looking for. If the spec says your reading should be between 1 and 6, put the setting on a low setting. If...

Switching to an aluminum prop, even with the same pitch, would get your RPM's up and - in my experience - would actually get you a little increas in speed. I'm guessing a 17 pitch same size aluminum prop would get you to about 4600 RPM's and probably get that tube going 22 MPH. It's amazing to...

That's a great trick, but how did you get there. I have the same probem with an old 9.9 mercury. If you google Mercury and the model number, you get no results. How did you get to that page?

Here's a video to help you out.

At the back of the motor there is a rubber plug on top of the cavitation plate directly above the Fin behind the prop. Remove that cap, remove the bolt that holds that fin on and there's another bolt that goes up from the bottom. But, on some models there's a bolt directly above the prop that...

His prop guy is pretty sharp!! Went with the same sugestion I made.

#15 in this diagram is your idle mixture screw, have you adjusted that? What are your RPM's at idle? Are you trying to idle it down too low? 90 psi compression is a bit low.

My bad. I went from a 21 pitch stainless prop to a 17 pitch aluminum prop. And.......You're kidding me, right? Do composite and aluminum props flex? Ace Propeller https://acepropeller.com › Prop Talk Of course! All propellers flex. What is often missed is that flex is a good...

I'm guessing you went from a 15 pitch aluminum to a 17 pitch Stainless prop. That's the only thing I can think of that would make that much difference. I'd try a 19 pitch aluminum prop.

I can't understand most of this, but sounds like plugs would be a good place to start.

Sounds like a fuel delivery problem to me. Check filters, kinks in lines, fuel pump diaphram and/or try squeezing the primer bulb when this happens.

I have a 1999 Sailfish with a Yamah 115 and the stock digital gauges provide me with gauges for fuel, tilt, tack, speedometer. I've purchased a small in dash digital Humminbird depth gauge and sounder that I use when cruising and don't really need to turn on the Humminbird Helix 7 that I have...

It's much more complicated than that on a lot of vehicles. With most newer vehicles, the blinkers are amber colored and the brake lights are red. So, the brake lights are wired together. Trailers don't have separate lights for blinkers and brakes. So, on the trailer, one bulb with two...

Clipper circuit?????

My Google search says NGK BP8H-N, which is a "standart" lookin plug. Those plugs that are flat were used a lot in outboards also. I've never tried them. What's wrong with the motor?

On my Yamaha, I have a small tank under the cowling and a larger aux tank thats stored under a seat. Both have large rubber caps on the top that are attached to a float that goes down into the tank. Basically with the key in the "on" position, I loosen and start lifting those floats and when I...