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  1. J

    2010 Yamaha F115 whistle/ring at high speed

    Maybe someone out there can help me with this. Ive got a 2010 Yamaha F115 with 24 hrs on it. Under a load the engine develops a faint metallic ring or whistle above 5000 RPM. Initial diagnosis was the lower bushing on the driveshaft. greased bushing, greased again with volvo penta prop...
  2. J

    F115 2006 Yamaha, intermittent problem

    Initially noticed while running. Motor would lose power for a split second and come right back... Took it in to my shop. could nopt replicate on hose. Hooked to diagnostics. Also happens at startup. Engine loses communication with program. Checked ECU, Harness, and both main and starter...
  3. J

    prop for yamaha F115 on a MULLET SKIFF?

    I run several mullet skiffs. I know the boat is sluggish by nature, but the boats with the F115 on them are very sluggish (12-16 kts in deep water, 16-18 on the flats) Theyre 24 and 26 foot and we carry a large net (600' seine) and several smaller ones (70' seine and/or 20'trawl). We...
  4. J

    VZ150TLR 2007 - loss of power at high RPM

    The engine has 72 hours on it and was sunk briefly. Ive replaced almost the entire electronics suite on the engine and a few other parts. It runs and runs well... or it did. It ran fine, full RPM from idle to WOT for about 20 minutes. Then it lost power at the high end. Back the throttle...
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