Jamesaelliott
Seaman Apprentice
- Joined
- May 10, 2021
- Messages
- 37
I’m sure somewhere around here is. Always been a DIYer. I’m always scared of them labor costs. But I may just have to bite the bullet on this one and find a mechanic.
I replied back to you on post 19. If the flywheel key was broke or sheared, my time marks wouldn’t line up when pistons are top dead center.See post #18 ?-----Your answer is ?----I have a 25 Yamaha that I got for a favor for a dealer.----Good looking motor with lower unit missing.----Have not done any work to it yet.
Everything on top end is moving like it should as far as I can see. Timing advances a litttle bit while In neutral, once shifted into gear obviously it has a much broader advancement and it stops maybe an 1/8th of inch before the stopper peg, “what ever it’s called”No fuel should be flowing thru the main jet into the motor during idle.
as I said check to make sure the timing is advanceing as the extra fuel starts hitting the motor
is the idle timing in spec and does it show as it advances when throttled up.Everything on top end is moving like it should as far as I can see. Timing advances a litttle bit while In neutral, once shifted into gear obviously it has a much broader advancement and it stops maybe an 1/8th of inch before the stopper peg, “what ever it’s called”
Just out of curiosity,, I’ve never messed with a timing light before so this may be an invalid question. Beings there’s timing marks on the the flywheel for “I think” 10, 20, and TDC probably wrong on the degrees without looking at it. Then the timing mark on motor. To my knowledge everything is in time by those marks and seen plain as day. If those marks were revelent to OEM specs, and seem to be visually correct, what would a timing light do? Where would you point a timing light? I’m dying to get back on the water to fish, not to mention duck season is 30 days away. That’s why ive dumped so much money in fuel related parts and carb cleaner. You would think from one great running tripS to a not running trip would be a clear sign of fuel relation. I can pull a motor apart all the way down to its core and put back to together, done it several times in my life. However timing, never bothered with it other than OEM time marks. You tell me to use a timing light and I’m lost, Genuinely asking.is the idle timing in spec and does it show as it advances when throttled up.
guessing does not help.
check with a timing light
I can do pretty much anything myself, if I don’t know from experience a simple google search is my friend. Finding nothing on this specific model Yamaha is now a concerning factor. Parts, specifically the carburetor, is apparently discontinued as well as rebuild kits. Haven’t done much research on it but as far as I’m concerned Yamaha dropped the ball on this model outboard. Sucks I ended up with it and will probably have hell getting rid of it, but it will for sure be in the worksis the idle timing in spec and does it show as it advances when throttled up.
guessing does not help.
check with a timing light
the light tells you when the spark is happening.Just out of curiosity,, I’ve never messed with a timing light before so this may be an invalid question. Beings there’s timing marks on the the flywheel for “I think” 10, 20, and TDC probably wrong on the degrees without looking at it. Then the timing mark on motor. To my knowledge everything is in time by those marks and seen plain as day. If those marks were revelent to OEM specs, and seem to be visually correct, what would a timing light do? Where would you point a timing light? I’m dying to get back on the water to fish, not to mention duck season is 30 days away. That’s why ive dumped so much money in fuel related parts and carb cleaner. You would think from one great running tripS to a not running trip would be a clear sign of fuel relation. I can pull a motor apart all the way down to its core and put back to together, done it several times in my life. However timing, never bothered with it other than OEM time marks. You tell me to use a timing light and I’m lost, Genuinely asking.