Gear Housing; Filling The Gear Housing With Lubricant - Mercury FourStroke 2.5 Service Manual

Gear Housing

5. Secure the water pump cover to the gear housing with four bolts. Tighten the bolts to the specified torque.
6. Lubricate the I.D. of the water tube seal with a light coat of 2‑4‑C with PTFE.
a
Tube Ref No.
2-4-C with PTFE
95
Loctite 242 Threadlocker
66
Description
Pump cover bolts
Gear Housing

Filling the Gear Housing with Lubricant

NOTE: The gear housing lubricant capacity is approximately 180 mL (6.1 fl oz). Use Premium or High Performance Gear
Lubricant in the gear housing.
Rotating propellers can cause serious injury or death. Never operate the boat out of the water with a propeller installed.
Before installing or removing a propeller, place the drive unit in neutral and engage the lanyard stop switch to prevent the
engine from starting. Place a block of wood between the propeller blade and the anti‑ventilation plate.
1. Remove the oil fill screw and gasket.
IMPORTANT: Do not add lubricant without removing the oil level screw. The gear housing cannot be filled because of
trapped air. Fill the gear housing when the driveshaft is in the vertical position.
2. Remove any gasket material from the oil fill screw, oil level screw, and the gear housing. Install new gaskets on the oil fill
screw and the oil level screw.
Page 6A-28
b
a
a -
b -
25645
Description
!
Bolts
Seal
Where Used
Inside diameter of water tube seal
Water pump cover bolt threads
WARNING
Part No.
92-802859A 1
92-809821
Nm lb‑in.
5.6 50
90-8M0065421 NOVEMBER 2012
lb‑ft