1975 merc 850 water pump

merc75

Cadet
Joined
Feb 24, 2014
Messages
7
i have never encountered a mercury like this do not know how to disconnect shift linkage it is not like other mercs i have with screw offs. can anyone shed some light for me?
 

racerone

Supreme Mariner
Joined
Dec 28, 2013
Messages
38,166
Re: 1975 merc 850 water pump

There is no shift linkage to disconnect !------Put control in forward and remove lower unit.-----Do not forget hidden screw under the trim tab.
 

Chris1956

Supreme Mariner
Joined
Mar 25, 2004
Messages
27,997
Re: 1975 merc 850 water pump

Racerone is correct, there is a slip splined connection between upper and lower shift shafts. I prefer to drop the gearcase when it and the control are in neutral. That makes it much easier to synchronize the shift shafts, when reassembling.
 

racerone

Supreme Mariner
Joined
Dec 28, 2013
Messages
38,166
Re: 1975 merc 850 water pump

Forward works just fine.-----Often the lower unit will jump to forward ( spring loaded ) when folks are not looking.----Then problems start on re-assembly.--------------Forward worked just fine 30 years ago.
 
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