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  1. R

    3 blade prop, changing to 4 blade, change pitch?

    Situation: ventilation<br /><br />18 foot cat, yamaha 90, single engine application.<br /><br />current prop, 13 by 17, 3 blade ( solas ), WOT is right at 5500 rpm.<br /><br />New prop, 13 by ???, 4 blade ( solas )<br /><br />anyone that knows about 4 bladed props? ( solas makes a 13 by 13, 15...
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    Choke malfunction in yam 60 hp/ 4 stroke

    I have gone thru all of the stuff, plugs carbs, for hard starting on a 50 hour old motor. <br /><br />runs great, idles etc, but getting it started cold is a bear.<br /><br />Where is the choke on this thing?<br /><br />I believe it is automatic. help please :confused:
  3. R

    Yam 60, 4 stroke difficulty cold starting

    I have 50 hours on the motor, runs fine once started, when warm, it starts easily, and idles perfectly once started. ( It's getting it started! ) Tachs out @ 5500 rpm. The motor is carbed. This problem has been getting worse, little by little<br /><br />The fuel lines are clear and free of any...
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    Shift Int. Switch connected, all cylinders dead....

    2001, Johnson 150 V6<br /><br />After disconnecting the shift interupter switch, the motor runs on the 3 port cylinders. ( the switch should seemingly allow the starboard cylinders to run, as well as the port cylinders, if dissconnected, according to the schematics )<br /><br />When the shift...
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    Location of the shift interupter switch?

    Can someone tell us the exact location of the shift interupter switch on a 2001 johnson/ bombardier 150? thanyou!!!!!
  6. R

    Twin 2002 150 Johnson decreasing performance

    26 foot twin counter rotating 150 johnsons cat, that purrs at an idle, broken in by the book, and seemingly have no lulls or deadspots. Top speed has slowed down 10 mph in the last 5 hours of run time. ( on gps ) Can't get the boat to tach more than 4500 on each motor. Used to get 39 mph @ 4000...
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    metal fragments in carbs, help!

    After rigging a new T top, somehow small aluminum filings made their way to the Johnson 150 carbs. Obviously, thru the air intake/ cowling. After hours of figuring out what could be wrong, engine smoking excessively, could not hold an idle, and running rough. <br /><br />Why is there no air...
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    loud pinging noise, yam 4 stroke 50?

    when i dissconnect the fuel line to run out the carbs, i get a loud pinging sound. i realize that this is not related to gas/ oil mix. it is it a vacuum noise? i am afraid to dissconnect the fuel line as this noise may be damaging.<br /><br />i enjoy reading this forum every night i come home...
  9. R

    Where can I find TK7 fuel treatment?

    there was an excellent article posted which i saved, but the web site is no longer accessible. i have looked locally, but with no results. thankyou!
  10. R

    water pee hole on a 8 hp 99 johnson?

    while running the water seems to just drip from the black rubber pee hole, no matter what rpms, a steady drip. the water seems to come out of the hole next to the exaust port as a descent spray. ( it's not a thru hub exaust )is this normal?? :confused: thankyou
  11. R

    Kicker size?

    I have an 18 foot nautico cat, with a 60 4 stroke yam. I would like to know if anyone can tell me if one of the new 4 stroke nissan 6 hp would be enpough to push this boat 4 to 5 mph? Total weight with fuel and 2 adults is about 1600 pounds. I would really like the peace of mind of an auxillary...
  12. R

    yamaha 60 4 stroke low oil indicator blinking while running

    My previous post i failed to say that the blinking occurs while running as well. everything else seems normal.
  13. R

    Yamaha 4 stroke 60 low pressure indicator

    This is a 2002 motor with 22 hours on it, the low oil pressure bar on the yamaha indicator/ tach/ hour guage started blinking.<br />Not knowing more than the basic manual, I checked the oil, which was at the proper level.<br />I next changed the oil and filter for the second time, ( the first...
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