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  1. #11
    TJBrad04's Avatar
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    The Yamaha outboards have a 500hr interval to check cam/bucket clearance.... Same design. I can count on one hand how many have needed to be re-shimmed over my last 15 years. Pretty rock solid for the most part!
    Quote Originally Posted by K447 View Post
    For those who have accumulated 200+ running hours, have you inspected/adjusted the engine valve clearances?
    If yes, did some of the valves need adjustment?

    Inspected the sacrificial anode in the cooling system?


    And these are listed for inspection after two years of ownership OR 200 hours, whichever comes first.

    Indentations in the rubber driveline coupler (aka the rubber spider)?

    Engine mount inspection?

  2. #12
    ocod's Avatar
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    Quote Originally Posted by K447 View Post
    Intermediate bearing?
    Are you referring to adding grease to the intermediate bearing housing?

    That photo is quite fuzzy. What problem is it showing?
    Yes, Intermediate bearing housing. You made a diy adding a line to make it easier to service.

    The anode in block by cyl#4.
    Mine was disintegrated and blocking cooling passage Here's picture of other half

    Attached Images Attached Images  

  3. #13
    Site Admin Green Hulk's Avatar
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    Very good thread Keith, thanks for taking the time to post this!

  4. #14
    Click avatar for tech links/info K447's Avatar
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    Quote Originally Posted by K447 View Post
    For those who have accumulated more than 200 running hours on SVHO, have you checked the engine valve train for correct tolerances?

    Did the valve clearances need adjustment? ...
    Quote Originally Posted by Green Hulk View Post
    Very good thread ...
    Jerry, do you have data on whether the SVHO engine actually needs the valve clearances adjusted?

    The service schedule says to check the clearance every 200 hours, but I have not seen much info on whether the factory shims typically need to be changed. Or typically are still just fine?

    Put another way, is there ‘normally’ so little wear that after the 200 hour inspection the same shims are still in place, since the measured clearances are still within factory spec?

    My own SVHO engines are approaching 300 running hours and the valve lifter clearances have not yet been checked.


  5. #15
    Site Admin Green Hulk's Avatar
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    Quote Originally Posted by K447 View Post
    Jerry, do you have data on whether the SVHO engine actually needs the valve clearances adjusted?

    The service schedule says to check the clearance every 200 hours, but I have not seen much info on whether the factory shims typically need to be changed. Or typically are still just fine?

    Put another way, is there ‘normally’ so little wear that after the 200 hour inspection the same shims are still in place, since the measured clearances are still within factory spec?

    My own SVHO engines are approaching 300 running hours and the valve lifter clearances have not yet been checked.
    I have never heard of any dealer doing this check and adjustment. I think it's just another way for them to make money. It would be interesting to see if yours are still in spec after 300 hours. It's easy to check. Keep us posted!

  6. #16
    Click avatar for tech links/info K447's Avatar
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    Quote Originally Posted by Green Hulk View Post
    I have never heard of any dealer doing this check and adjustment.

    I think it's just another way for them to make money...
    If the dealers are not actually doing this service interval check, how are they making money from it?

  7. #17
    Site Admin Green Hulk's Avatar
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    Quote Originally Posted by K447 View Post
    If the dealers are not actually doing this service interval check, how are they making money from it?
    They are probably pushing customers to do it.... Just because I have never heard of a dealer performing this service doesn't mean it's not happening. There's a lot of clueless people out there that don't know better and dealers are taking advantage of them.... these are the same guys paying $350 for oil changes at their dealer!

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