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Mercury 40 Service Manual

Mercury 40
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BIGFOOT GEAR HOUSING
90-828631R3 MARCH 1999 Page 6B-21
Pinion Gear, Driveshaft, and Forward Gear
1. Hold driveshaft using Driveshaft Holding Tool; remove (and discard) pinion nut.
Model Driveshaft Holding Tool
40/50 Bigfoot (4-Stroke) 91-56775
60 Bigfoot 91-817070
75/90/100/115/125 91-56775
2. Remove driveshaft, pinion gear, bearing and forward gear.
3. Replace pinion gear if it is chipped or worn.
4. Replace bearing and race if either are rusted, pitted or damaged; or if bearing does not
roll freely. To remove race, refer to “Lower Driveshaft Bearing Race,” following.
5. Replace forward gear if gear teeth or clutch teeth are chipped or worn.
19175
a
b
c
d
e
f
a-Driveshaft Holding Tool
b-Pinion Nut
c-Driveshaft
d-Pinion Gear
e-Bearing
f-Forward Gear

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Mercury 40 Specifications

General IconGeneral
Horsepower40 hp
Starting SystemElectric
SteeringRemote
Fuel Induction SystemEFI (Electronic Fuel Injection)
Shaft Length20"
Full Throttle RPM Range6000

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