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I have 2 1975 Merc 850's, one is generally for parts. I wanted to swap lower units because the vent screw was not removeable on the active 850. I pulled both lower units and discovered that the active Merc had a pre-load pin on the top of the drive shaft and the other lower unit did not. Are...
I have a 1975 Johnson 9.9 in good shape. It starts right up, runs all day, great motor.
I recently had it out and was running it at wide open throttle and the power significantly cut back for a short amount of time (5 seconds or so) and then returned to normal.
I have replaced the fuel pump...
Hello,
I have improved the "pull harder" impulse in most cases in my life but this past weekend I reverted to the old ways.
I was slowly but firmly pulling the plug wire from the distributor on my 1975 850 after it quit having spark and I pulled a plug wire loose from the cap. To my shame I...
Hello,
I am new to the Mercury family and have enjoyed trying to get this motor serviceable again. My budget is quite tight due to having a young family but here is what I know about my problem. Your help and advice is very much appreciated. I bought an older boat with the 850 on it. It did...
