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Max RPM on a Yamaha 9.9LPB

Discussion in 'Members Zone: Props and Power' started by brancky3, Aug 15, 2019 at 8:31 PM.

  1. brancky3

    brancky3 New Member

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    Our lake has weird boat restrictions. We bought the biggest we could - an 18' SLX with a Yamaha T9.9LPB engine. It's perfectly fine for us and it gets up to around 7mph (lol) but it never gets past 2200rpm. Reading online specs tells me this engine should be around 5000-6000RPM... Should I be worried? We only have around 9 hours on it so far.
     
  2. SEMPERFI8387

    SEMPERFI8387 Moderator

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    lakeliving likes this.
  3. brancky3

    brancky3 New Member

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    Right, but this is the prop the engine came with and I had no options to select a different one when I ordered the boat. I just wanted to make sure the engine isn't lugging in a danger zone.

    On second thought... my tachometer might not be calibrated properly. I'll check that this weekend.
     
    Last edited: Aug 16, 2019 at 7:16 AM
  4. SEMPERFI8387

    SEMPERFI8387 Moderator

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    Yeah, I’m not sure there’s many options for our motors ... I’ll have to see what’s on mine.
     
  5. brancky3

    brancky3 New Member

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    I checked the tach and it is set on '6p'. According to the Teleflex manual it should be set to '3p' instead. I'll set it tomorrow but it should be normal after that.
     
    SEMPERFI8387 likes this.

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