Upper seal can be removed by drilling 2 small holes on opposite sides of the seal, screwing 2 sheet metal screws and prying the seal out, If screws pull out drill 2 more holes and repeat,
Mercury part # for seal is 26-21642
C/R seal 7415 will work
Be sure to lube seal and crankshaft when installing new seal to avoid
damage to seal lip.’
It isa good practice to have 7/16″x20 fine thread nut on
crankshaft when working on powerhead to prevent damaged thread.
Before using a nut for this purpose, run a tap thru the nut to be sure
the thread us good, As a part of preparing a powerhed for assembly
it is an excellent practice to run die over all threads and a tap thru
all nuts and threaded holes. Picky Picky, but very often needed,
Louis
