Search results

  1. M

    How to remove powerhead on a 8hp?

    Hi all, Anyone has tips on how to remove the powerhead on a 8hp yamaha? (Yamaha 8B 677 1981) I removed all the screws below i could find and checked from above that there isn't anything that seems to be holding it there. Do i have to yank it side to side? Push it up with a pry bar? I tried by...
  2. M

    Yamaha 8B 677 Will not start- How to adjust and finetune? (Pics attached)

    Hi all, So.... same engine new topic.... I went thru and cleaned the - breaker points - carburetor - fuel filter and pretty much everything i could find When cleaning the breaker points i checked for the timing using the static method at WOT and it was around 25 BTDC, so that looked good...
  3. M

    Yamaha 8B Flywheel removal

    Hi all, anybody has any idea on how to remove the flywheel on a 1980 Yamaha 8B? I tried with a harmonic balancer puller applied on the 3 inner bolts (and the central one) but I couldn't get it to nudge which made me think I was doing something wrong. and then at one point I find bolts at the...
  4. M

    Yamaha 8B 677 1982(?) - Parts catalogue and service manual impossible to find

    Hi all! I'm helping out a relative on mine to get going an old boat he has at the cottage. It's a Yamaha 8B 677 that i got told has never run right, so i'm planning to give it a general overhaul .. BUT No matter how much i search i can't find the service manual for it and not even the parts...
  5. M

    Backlash measurement - Getting no lash.. measurement error or wrong shim?

    Thanks @AllDodge! Although a little confused and lost now... I have been checking the manual also and you were right, it says to install the prop shaft back on. But if i reinstall it, how should i do with the gear? Should it be engaged in forward or rear? and how can i check the backlash, i...
  6. M

    Backlash measurement - Getting no lash.. measurement error or wrong shim?

    Hi all, I've never done a backlash measurement before so i thought to give it a go now while rebuilding a lower unit for a F15. Looking at the service manual, i ..: 1. Removed the lower unit from the outboard 2. Removed the water pump assembly 3. Opened up the gearcase and pulled out the axle...
  7. M

    Backlash indicator tool diy and measurement

    Since i'm sort of in a hurry and shipping over seas would take too long (plus it would cost around 40 USD shipping included for a 19 $ part) i went the DIY way and asked nicely at some folks at a workshop and got this, may not be so pretty but it's functional! :) So what i will do is: 1...
  8. M

    Backlash indicator tool diy and measurement

    Hi all, I have a F15AMH outboard which i replaced gears in that is giving some issues with gears out of adjustment (not where they are supposed to be compared from the switch) that i figured out needs shimming. Following the procedure in the manual i see i need the following tool, backlash...
  9. M

    Yamaha 40V '03 (2-Stroke) misfiring on cyl #3 and too rich

    Hi all, So i've been scratching my head for a while now and thought to ask for help: I have a Yamaha 40V from 2003 that started to running roughly this summer when the boating season began. I didn't pay so much attention to that then and thought it was obvious that it needed a carb cleaning, to...
Top