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Mercury 45 Service Manual

Mercury 45
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NON-BIGFOOT GEAR HOUSING
Page 6A-2590-828631R3 MARCH 1999
Pinion Gear Bearing
1. Inspect bearing for rust, roughness or discoloration from lack of lubricant.
2. If bearing is damaged, bearing and race must be replaced as an assembly.
3. If race appears to have spun in drive shaft bore, gear case housing must be replaced.
52823
b
a
a-Bearing
b-Race
Pinion Gear
1. Inspect pinion gear teeth for rust, pits, chipping, excessive wear (teeth are sharp edged)
or broken.
2. If pinion gear teeth are damaged, also inspect forward and reverse gear teeth for dam-
age.
3. Replace gears as required.
52839
Forward Gear
1. Inspect forward gear teeth for rust, pits, chipping, excessive wear (teeth are sharped
edged), or broken teeth.
2. Inspect forward gear clutch jaws for wear. Rounded jaws indicate the following:
• Improper shift cable adjustment.
• Engine idle speed too high.
• Shifting too slowly.
52874

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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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