Mercury OptiMax 250 Service Manual

INSTALLATION
Page 1D-24 90-888438 JUNE 2002
4. After the location has been selected for the thru-hull fitting, drill a 9/16 in. (14.3 mm) di-
ameter hole.
5. Apply Marine Sealer to entire length of threads and under the head of the thru-hull fitting.
Fasten the fitting into the transom with the brass nut (provided).
c
a
b
a-Through-Hull Fitting
b-Brass Nut
c-Marine Sealer
6. Connect the water by-pass hose to the thru-hull fitting with the hose clamp (provided).
Make sure the hose slopes at a minimum rate of 1 in. (25 mm) drop per 12 inches (300
mm) of hose.
a
b
a-Hose Clamp
b-Water By-Pass Hose

Mercury OptiMax 250 Specifications

General

Engine Type	V6
Horsepower	250 hp
Gear Ratio	1.75:1
Starting System	Electric Start
Alternator	60 Amp
Shaft Length	20", 25"