Lubrication Points; Checking Power Trim Fluid; Changing Engine Oil - Mercury 25 Manual

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MAINTENANCE
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LUBRICATION POINTS

Lubricate Point 1 with Quicksilver or Mercury Precision Lubricants
Anti-Corrosion Grease or 2-4-C Marine Lubricant with Teflon
1
Propeller Shaft – Refer to Propeller Replacement for removal and installation
of the propeller. Coat the entire propeller shaft with lubricant to prevent the
propeller hub from corroding and seizing to the shaft.
Lubricate Points 2 thru 6 with Quicksilver or Mercury Precision Lubricants
2-4-C Marine Lubricant with Teflon or Special Lubricant 101.
2
Swivel Bracket – Lubricate through fitting.
3
Tilt Tube – Lubricate through fittings.
4
Co-Pilot Shaft (Tiller Handle Models) – Lubricate through fitting. Move the
steering friction lever back and forth while lubricating.
5
Lubricate threads on transom clamp screws (if equipped).
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LUBRICATION POINTS (CONTINUED)
6
Steering Cable Grease Fitting (If equipped) – Rotate steering wheel to fully
retract the steering cable end (a) into the outboard tilt tube. Lubricate through
fitting (b).
WARNING
The end of the steering cable must be fully retracted into the outboard tilt
tube before adding lubricant. Adding lubricant to steering cable when ful-
ly extended could cause steering cable to become hydraulically locked.
An hydraulically locked steering cable will cause loss of steering control,
possibly resulting in serious injury or death.
Lubricate Point 7 with light weight oil.
7
Steering Link Rod Pivot Points – Lubricate points.
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CHECKING POWER TRIM FLUID

8
Tilt outboard to the full up position and engage the tilt support lock.
9
Remove fill cap and check fluid level. The fluid level should be even with the
bottom of the fill hole. Add Quicksilver or Mercury Precision Lubricants Power
Trim & Steering Fluid. If not available, use automotive (ATF) automatic
transmission fluid.
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CHANGING ENGINE OIL

Engine Oil Capacity
3 U.S. Quarts (3.0 Liter).
Oil Changing Procedure
1
Tilt the outboard up to the trailer position.
2
Turn the steering on the outboard so that the drain hole (a) is facing downward.
Remove drain plug and drain engine oil into an appropriate container. Lubricate
the seal on the drain plug with oil and reinstall.
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CHANGING ENGINE OIL
Changing Oil Filter
1
Place a rag or towel below the oil filter to absorb any spilled oil.
2
Unscrew old filter by turning the filter to the left (a).
3
Clean the mounting base. Apply film of clean oil to filter gasket. Do not use
grease. Screw new filter on until gasket contacts base, then tighten 3/4 to 1
turn.
Oil Filling
4
Remove the oil fill cap (c) and add oil to proper operating level.
5
Idle engine for five minutes and check for leaks. Stop engine and check oil level
on dipstick. Add oil if necessary.
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90-10183R30