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  1. Deus_Vult

    Merc 850 Inline 6 Piston Scoring

    Hello everyone. Lately I’ve been in the process of tearing down and rebuilding my 1964 Mercury 850 6 cylinder so it is fresh and ready to go for next year. Today I split the crankcase halves and pulled the crankshaft out and found that some of the pistons had some scoring on the sides. Although...
  2. Deus_Vult

    1998 Johnson 115 Prop Shaft Seal Replacement

    Hi guys, today I am asking a question regarding my dad's 1998 Johnson 115 Fast Strike on his 1999 Glastron Fish and Ski. For some background, he has had this boat since it was new off the showroom floor, and has always done a great job of maintaining the motor. As far as he can remember, it has...
  3. Deus_Vult

    1964 Mercury 850 Water Flow Issue

    Hi guys I am mostly a lurker here, but I have a problem that has stumped me. Sorry for the long post, I just want to make sure people have as much info as possible. Last summer I bought a 1964 Mercury 850 inline 6 outboard for $150, and the seller told me it had not run in many years. I have...
  4. Deus_Vult

    Motor only fires up when key is turned to off

    Hey guys, I'm really stumped on this one. My 1967 Mercury 500 will spin and spin and spin when the key is turned to crank, but it won't start. However, once I turn the key is turned to off, the motor fires up for a second then quits. Do you have any ideas on what the problem might be? Thanks.
  5. Deus_Vult

    Cracked mercury powerhead

    Hi guys, I'm new to the forum, although I have lurked here for awhile. Basically, I have been repairing and rebuilding the powerhead on my 1967 Mercury 500 Thunderbolt due to an unrelated issue. While doing this, I noticed that there is a 1.25 inch crack running along the outside cylinder wall...
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