Don't forget to remove the "fin" behind the prop to get to that bolt too. Remove the rubber plug to get to that bolt to remove the fin, then you can get to the bolt that goes up into the exhaust housing "mid section". That's frequently forgotten and some folks have destroyed a lower unit by...
Running fine at WOT, but poor idle and trouble starting is usually caused by an issue with idle circuit in carbs. I've attached a diagram of our carbs. You'll need to remove carbs and take off the top cover #10 and clean out the small passages under that cover. Also,take out the adjustment...
Before getting too worried, I'd go to a national auto parts store and rent a good compression tester and test again. All of those numbers seem high. Let us know how the retest goes.
You do have a little cleaning to do there! It's a little crusty in there! I'm sure you'll have it clean as a new one soon. If it's running well, then cleaing is all that's left to do, right?!
Now, I don't have fuel injection on my 1999 115 Yamaha, but it does have electronic ignition. 4 stroke fuel injected motors might be different. It would seem odd to me to have a charging system that keeps your battery charged while the motor is running , but that same charging system can't...
Battery voltage is about 14 when running. That's because it's being charged by the charging system. The starting system that powers the motor once it's been started by the battery. When my trolling motor battery is completely dead, I crank up my motor, disconnect the battery cables and...
I've attached a link to a video of a rebuild of the carb I think you have. I've also attached a parts diagram where you can order parts needed. I'm guessing you're talking about the spring that's in the primer. There's a small spring and also a small steel ball. It's a check valve, I assume...
And don't throw it away once you get the parts you need now. That parts motor will pay for itself over and over again!! Smart purchase!
I bet Racerone has 20 or 30 "parts motors" on hand. He's constantly got the parts that folks here need for older outboards!
i worked at a service station almost 50 years ago. We used to be able to buy a solenoid rebuild kit! It cost about $3 at the time. The solenoid was actually held together by long screws and you opened it up, replaced the disc that made contact, the spring and you used a little sandpaper to...