Originally Posted by ad_astra
No. It's strange and hard to describe. The motor
is fairly lightly mounted so the whole motor mount twists up and down slightly (rotates perpendicular to the boat's beam). This amount decreases at higher rpm
and as I said, goes away if I turn by hand and leave it parked.
Only going by what you posted. A "whole motor mount that twists up and down
. . ." - usually indicates bad motor mounts. Movement of the motor will put the prop shaft out of alignment with the shaft log, cutlass bearings and other parts
in the line.
- - Remember the propeller
does not push the boat.
- - The propeller pushes the prop shaft that pushes the transmission
that pushes the engine that pushes the motor mounts and then they push the boat through the water
. (except if you have a thrust bearing system on the prop shaft.) Motor mounts are critical in the propulsion
line and do wear out which will cause misalignment and extra wear on the other parts