Buy Yamaha Outboard Parts

Announcement

Collapse
No announcement yet.

Low rpm wot 70hp

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • #16
    Preventive maintenance can save most of this...use fuel stabilizer in gas, install a fuel/water seperater, and drain each carb float chamber about twice a year....save all this pain/misery/expense...

    Comment


    • #17
      Originally posted by TownsendsFJR1300 View Post

      Yep, I know, and thanks. Finding the correct one is the key. And even if I find one, replace it, I don't know if the engines still going to run or not (as their may very well be other issues) and it's been sitting for at least a decade in the weather.


      If it was mine (my time is free to me), I would have dug deeper but he wouldn't spend the money with no guarantee..
      Yea, when they give you the unit because they do not want to spend money on it,
      it is easier to spend some extra time playing with it to see if it is worth putting your time and money into it

      Comment


      • #18
        Ok thanks for the info guys. Fixed the tacho and getting 4800 at wot. Prop size 13.5x15. Still below rpm
        Last edited by jaredluke; 12-28-2017, 12:05 AM.

        Comment


        • #19
          Originally posted by jaredluke View Post
          Ok thanks for the info guys. Fixed the tacho and getting 4800 at wot. Prop size 13.5x15. Still below rpm
          So the are carbs are clean? The fuel filters are clean? The plugs are good? Please tell us what you have done so far so its not a complete guessing ****.

          Do you have a manual for the engine? If not, here is a link to get one: https://www.vansoutboardparts.com/se...a-shop-manuals

          The timing advance/retard on this engine is done through the CDI is it not? That maybe off.

          Please provide all the information on the data plate found on the engine transom bracket. The gentlemen on here will try to help you but you have to tell us as much information about the engine as possible.

          Thanks

          Comment


          • #20
            Originally posted by 99yam40 View Post

            Yea, when they give you the unit because they do not want to spend money on it,
            it is easier to spend some extra time playing with it to see if it is worth putting your time and money into it
            Scott,

            For future reference. I was working on a fellows "old" John Deere Snow blower last year and the carb float had broken apart. So I go to order a float and carb kit...was about $40.00

            I plug the carb part number into Mr. Goggle and I see I can get a brand new carb for $19.99 plus shipping...$30.00 total on Amazon or EBay I cant remember now. Got the whole carb in less than a week.

            Compared the two and they were identical, put it on and adjusted the mixture by ear and she is running sweet. You can get a lot of these small engine carbs now for dirt cheap.

            John Deere wanted almost $200 for a new carb. Worst snow blower I ever laid my hands on though...they should have stuck to tractors.

            Comment


            • #21
              Originally posted by jaredluke View Post
              Ok thanks for the info guys. Fixed the tacho and getting 4800 at wot. Prop size 13.5x15. Still below rpm
              Sorry people here seemed to have gone off on a tangent. 15p is getting low, how heavy is your boat and what speed are you getting?
              Last edited by zenoahphobic; 12-28-2017, 03:22 AM. Reason: Reread thread

              Comment


              • #22
                Originally posted by panasonic View Post

                Scott,

                For future reference. I was working on a fellows "old" John Deere Snow blower last year and the carb float had broken apart. So I go to order a float and carb kit...was about $40.00

                I plug the carb part number into Mr. Goggle and I see I can get a brand new carb for $19.99 plus shipping...$30.00 total on Amazon or EBay I cant remember now. Got the whole carb in less than a week.

                Compared the two and they were identical, put it on and adjusted the mixture by ear and she is running sweet. You can get a lot of these small engine carbs now for dirt cheap.

                John Deere wanted almost $200 for a new carb. Worst snow blower I ever laid my hands on though...they should have stuck to tractors.
                Yep, a slight re-rail but, yes, I'm familiar with the E-bay, CHINESE knock off' carbs / parts.

                Their NOT OEM and much cheaper ($).

                Depending on the part (Yamaha OB's included), some knock off's are ok, some not.

                Knock off's for the MC, OFTEN have problems with fit and function.. 99% of the time, I buy OEM, just not worth potential headaches/later issues..


                IMO, for the extra $10, for your blower, I would have replaced the parts and kept the OEM carb..

                .
                Scott
                1997 Angler 204, Center Console powered by a 2006 Yamaha F150TXR

                Comment


                • #23
                  Originally posted by zenoahphobic View Post

                  Sorry people here seemed to have gone off on a tangent. 15p is getting low, how heavy is your boat and what speed are you getting?
                  You correct Z gone off the rails, but at least still on machines.Was waiting for the OP to provide some more information....back to topic at hand. Merry Christmas to ya.

                  Comment


                  • #24
                    Hey guys took off the airbox and looked the carbs. When throttle is in wot position the throttle plates arent exactly horizontal. Could this be the reason why wot cannot ve achieved? I have the service manual but cant find any info on how to adjust

                    Comment


                    • #25
                      Originally posted by jaredluke View Post
                      Hey guys took off the airbox and looked the carbs. When throttle is in wot position the throttle plates arent exactly horizontal.
                      The throttle plates SHOULD be horizontal @ WOT.

                      First, make sure the throttle cable from the control box is fully extending. If it isn't, adjust it so it does...

                      With the throttle cable disconnected, when you move the throttle linkage (at the engine-where the cable attaches), will the butterflys open fully?

                      If not, disconnect linkages, check each carb butterfly / shaft for correct function.

                      Then check your linkages for any binding.

                      In your manual should be a section for "link and sync" , follow that to the letter..
                      Last edited by TownsendsFJR1300; 12-31-2017, 07:28 AM.
                      Scott
                      1997 Angler 204, Center Console powered by a 2006 Yamaha F150TXR

                      Comment

                      Working...
                      X