Inspect the anodes on the shaft, outdrive, and trim tabs. Replace any that
are close to half-deteriorated.
Check to make sure the rudderstock
hasn’t been bent.
After the boat is launched, be sure
to inspect around the rudder and all
thru-hulls for leaks, and check the
stuffing box while underway to make
sure there is a steady drip.
Check outdrive bellows for cracks and
tears (look especially in the folds).
Check hydraulic trim fluid. If you didn’t
change it last fall, change it now.
Check lower-unit lube level. Creamy
oil indicates water (and a bad seal).
Many manufacturers recommend
changing the oil every year.
Flexible gasoline lines should say
“USCG Approved, J1527.” Replace any
Are fuel hoses supple, with no cracks,
bulges, or soft spots? Do the lines
smell like gasoline (wipe the lines with
a clean rag and then smell the rag)?
Did you also use a rag to detect odors
Cooling hoses should fit snugly and
be solidly clamped.
Replace any hose clamps that show
signs of corrosion.
Replace fuel filters.
Clean or replace the air filter.