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    Flushing procedures for 40hp 4-stoke EFI

    I have a late-model 40hp 4-stoke EFI 3-cylinder. The manual clearly states that you can flush the motor in either the down or the tilted position. Does this imply that you can run the motor when it is tilted all the way up? I would have thought that the VST would not work properly in that...
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    Merc/Evinrude prop compatibility

    Anyone know if I can put a prop from a late-model Johnson/Evinrude onto a late model Merc outboard? They are both 40-hp 4-strokes with 13-spline hubs. Thanks, Don
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    Who makes Mecury 40Hp+ engines now?

    I understand that Merc was using a Yamaha powerhead in the past and now uses Tohatsu for their smaller engines. Who makes the power head for their 40 Hp+ engines these days? Thanks, Don
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    Does I/O prop fit outboards?

    I just inherited a couple of 17-inch pitch props from a Mercruiser I/O. They do not fit my 1975 Merc 850 OB. The outer hub diameter is a bit too large and it hits the lower housing.<br /><br />Does anyone know if these will fit other Merc Outboards?<br /><br />Thanks,<br /><br />Skooks
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    Low compression on 9.9

    Hi all:<br /><br />I have a 1975 9.9 merc. Both cylinders measure 75 lbs on an accurate gauge. The engines starts and runs very well. Does the low compression indicate that I may need a ring job in the near future?<br /><br />Thanks,<br /><br />Don
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    engine misses badly at part-throttle

    I have a mid-70's 85 HP merc outboard. It runs great at WOT but really stumbles and runs rough at part-throttle. It feels like one of the carbs is kicking in intermittently and the other carb is working OK. When I open er up everthing runs smooth.<br /><br />I'm thinking a carb R&R. Anyone else...
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    Where to connect cooling water to 9.9?

    I just bought a '70s vintage 9.9 and I have a stupid question:<br /><br />Where/how do I connect a hose to supply cooling water when I am running this thing in my driveway?<br /><br />There is no obvious port or fitting. Is the water intake that small grill just above the prop?<br /><br />Thanks!
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    9.9 throttle locked out in neutral and reverse

    I just bought an old (1970's vintage) merc 9.9 HP outboard. It is impossible to move the throttle unless the shift selector is in Forward. is this a design "feature" or is something Kaput?<br /><br />Thanks,<br /><br />Don
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