Search results

  1. W

    Lower unit crack - any tip to fix it?

    Hello<br />I’d like to ask for input on methods of repairing the lower unit crack, which exists on one side of the exhaust escape. The crack opens less than 1/16’’ wide on the exhaust edge, is about 2 inches long, it’s horizontal and logically gets narrower further from the edge. I suppose the...
  2. W

    Lower unit crack - any tip to fix it?

    EDIT - wrong forum, sorry :o
  3. W

    Max RPM tuning questions.

    Hello,<br />I have been to some max RPM tuning recently (motor tuning, motor transom height, new prop) and generally I’m OK with the results. To start with, I was getting 4600rpm with 21’’ pitch aluminum prop (25’ panga style boat, 140 HP). After adjusting the WOT (was not getting a 100%...
  4. W

    What year the Yamaha 140HP is?

    Hello,<br />Does anybody know the year of the 140HP Yamaha, number 140 BET 6F3 521088? The problem is that US Yamaha couldn’t tell, because… this model was not sold in the USA :( . Well, shouldn’t they know, anyway?! I hope some of knowledgeable people here will! Thanks.
  5. W

    How to check for WOT on Yamaha V4?

    Hello,<br />My question about proper pitch problem on the General Discussion List, leads to another technical Yamaha doubt. Since 2 inches less pitch on the prop did not rise the max RPM, the chances are I don’t get to the wot. So, how do I check if the throttle is wide opened on my Yamaha 140HP...
  6. W

    Lower pitch didn'd rise the max RPM. What's wrong?!

    Hello,<br />I have a custom fiberglass 25 foot panga, Eduardono style, beefed up, with double floor and some additional fiberglass lockers, ankle locker, live well. Additional weight to this would be some 1300lbs between people, fuel and equipment.<br />The engine is Yamaha V4 140HP two stroke...
  7. W

    Yamaha 140HP overheat buzz while engine cold

    Hello, I am new to the forum and to the powerboating. I’ve been thinking about buying a panga, but the water test showed some engine problems. The engine (Yamaha 140HP V4 2stroke, from early 90’s – my local Panama dealer was not able to check the year from the serial number…) seems to work just...
Top