Search results

  1. P

    Surging-surging

    Yam 60, 3CYL surges under power (above 3000RPM).<br />I've had them serviced ($400!) and she's fine for about 2 trips and then progressivly gets worse.<br />It has Water seperator, and new fuel tank with new hoses and connectors.<br />Fuel pump was replaced and Carbs completely stripped down and...
  2. P

    Yamaha 60, down on power

    Have a pair of Yamaha 60s.<br />One seems to be running smooth. Starts great and runs smooth, but seems to be down on power.<br /><br />It's sister motor can get the boat on a plane but this one can't (although it was ok last most of last year).<br /><br />I cleaned the carbs, added a new fuel...
  3. P

    Yamama Surging

    95 Yam 60.<br />When I take throttle to about 90% all seems fine, but when I open it to Fully open, it seems to get a few more revs but then surges (like it's misfiring). <br />When I drop the throttle back a small bit it stops happening.<br /><br />I've just stripped and cleaned the carbs. Just...
  4. P

    New Props - Too high?

    I tried some new props over the weekend.<br />Have Twin 60's on a 5.8m RIB.<br />Originally came with 15" - Could probably pull the titanic and would throw the passangers off the back when I gave it gas, but not top speed.<br />Changed to 17" and seemed a good change. Less acceleration and...
  5. P

    Yamaha 60 - Down on Power

    Have a pair pr Yam 60's (1996).<br />Both run and start well. Both identical props.<br />Left motor down on power, so did rebuild with OS pistons. Got compression up to 125/125/110 but it's still not getting as much power as the other motor.<br />"Good" motor will get over 5700RPM (will always...
  6. P

    Yamaha 60 Overheating?

    Have a pair of 1996 Yam 60’s with strange problem on one.<br />Ran for about 2 hours perfect, and kept revs to no more than 5500-5600. Stopped fine and ran fine on all revs. Came back in to harbour and backed off throttle to idle for a few mins and then moved off again. Power seemed to be right...
  7. P

    No power, but idle good (after rebuild)

    I did a full rebuild of my Yam 60. Rebored and replaced pistons rings etc.<br />Motor started great and idles good and can rev to 3000+ in neutral, but has no power when I put it in forward. Will not get any more than 1600rpm.<br />Heres what I have tried (and no improvement)<br />Just rebored...
  8. P

    Proceedure after rebore?

    One of my YAM 60's was down oc compression on bottom (of 3) cylinders.<br />Stripped down and discovered ring must have broken and smashed around so I ordered 3 oversize pistons, gaskets etc and got engine machine shop to rebore block. This is the first time I've rebuilt a motor. (just like...
  9. P

    Lower Unit problem

    Engine wouldnt go into gear, so I dismantled the lower unit. The lower shift rod is bent at the bottom. <br />I also noticed the pinion gear is worn, but the forward and reverse seem good apart from a few small chips.<br />Clutch dog is good on forward side, but has very slightly rounded edges...
  10. P

    Yamaha 60 Shift Problem

    Yamaha 60 (1995 3-cyl) won't go into gear.<br />It was a big stiff getting in and out over the last few times and not wont go into forward or reverse.<br />Cable is OK and I disconnected it and tried to manually move it. It won't click into gear and feels "springy" as if it's not moving at the...
  11. P

    YAMAHA 60 Power (HELP!)

    I have a 5.7meter (19ft) Rib with a pair of 1995 3CYL Yamaha 60’s. Originally had 15” Pitch props and the right motor could reach 5700 Full throttle where the left would only reach 5400. They seemed to run at about 5300 with no problems at about 90% throttle although the left motor seemed to bog...
Top