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Mercury 45 Service Manual

Mercury 45
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BIGFOOT GEAR HOUSING
Page 6B-58 90-828631R3 MARCH 1999
6. Replace this lubricant “Vent” screw and gasket only and continue filling until excess
starts to flow out of second lubricant “Vent” screw hole.
7. Let gearcase sit for at least on minute to allow lube to settle out, then top off.
53922
a
b
c
a-Vent Screw - Torque to 60 lb-in. (6.8 Nm)
b-Fill/Drain Screw - Torque to 60 lb-in. (6.8 Nm)
c-Oil Level Vent Screw - Torque to 60 lb-in. (6.8 Nm)
8. Replace second lubricant “Vent” screw and gasket.
IMPORTANT: Do not lose more than one fluid ounce (30cc) of gear lubricant while re-
installing “FILL” screw.
9. Remove lubricant tube from “Fill” hole; install “Fill” screw and gasket.
Gearcase Installation
WARNING
Disconnect (and isolate) spark plug leads from spark plugs before installing gear
housing onto driveshaft housing. Failure to follow this warning could result in acci-
dental engine starting and possible injury.
1. Position outboard shift linkage into forward gear position.
Models 40/50 Bigfoot (4-Stroke)
a
Remote Control Model Shown
a-Shift Lever

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Mercury 45 Specifications

General IconGeneral
Horsepower45 HP
Cylinders3
StartingElectric
Full Throttle RPM Range5000-6000 RPM
SteeringRemote
ExhaustThrough Prop
Shaft Length20 in

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