Simple Method Of Shift Shaft Setup For Mercury Outboards Verified

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merc850

Commander
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Jul 7, 2010
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2,022
This is how I do it in about 60 sec.: Turn the LU shift shaft by hand counter-clockwise until it
stops, then with Vise Grips tight on the bottom of the shaft turn it a
few more degrees CCW until it clicks into a stop, this
should be neutral - check by turning propshaft --
prop should spin freely.
Put control in N and go ahead and attach LU to driveshaft housing some turning of the flywheel will help the DS splines align.
Do not shift into reverse unless you turn the prop at the same time.
 

Texasmark

Supreme Mariner
Joined
Dec 20, 2005
Messages
14,544
This is how I do it in about 60 sec.: Turn the LU shift shaft by hand counter-clockwise until it
stops, then with Vise Grips tight on the bottom of the shaft turn it a
few more degrees CCW until it clicks into a stop, this
should be neutral - check by turning propshaft --
prop should spin freely.
Put control in N and go ahead and attach LU to driveshaft housing some turning of the flywheel will help the DS splines align.
Do not shift into reverse unless you turn the prop at the same time.

Well said!
 

Maclin

Admiral
Joined
May 27, 2007
Messages
6,761
Just went thru that on my 1979 Mariner 90. Had to move the lever slightly to Forward while "pushing" up on the lower to get the coupling splines from the upper coupling to align. I like this method better than "the book" version of leaving lever in Forward now :)
 

c webster

Recruit
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Sep 7, 2016
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I had been running the motor with the throttle only button depressed help will be greatly appreciated this motor has less than 10 hours been in the barn for last two years
 
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