Mercury 2.5 Manual

90-10100R30
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MAINTENANCE
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PROPELLER REPLACEMENT (CONTINUED)
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Coat the propeller shaft with Quicksilver or Mercury Precision Lubricants
Anti-Corrosion Grease or 2-4-C Marine Lubricant with Teflon.
IMPORTANT: To prevent the propeller hub from corroding and seizing to the
propeller shaft, especially in salt water, always apply a coat of the
recommended lubricant to the entire propeller shaft at the recommended
maintenance intervals and also each time the propeller is removed.
6 If removed, insert drive pin (b) into propeller shaft.
7 Slide propeller (a) onto shaft, making sure the slot in propeller engages with
the drive pin.
8 Install the cotter pin (c) through hole in propeller and bend to hold in place.
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CORROSION CONTROL ANODE
Your outboard has a corrosion control anode installed to the gear case. An anode
helps protect the outboard against galvanic corrosion by sacrificing its metal to be
slowly eroded instead of the outboard metals.
9 The anode (a) requires periodic inspection especially in salt water which will
accelerate the erosion. To maintain this corrosion protection, always replace
the anode before it is completely eroded. Never paint or apply a protective
coating on the anode as this will reduce effectiveness of the anode.
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SPARK PLUG INSPECTION AND REPLACEMENT
WARNING
Avoid serious injury or death from fire or explosion caused by a dam-
aged spark plug boot (a). A damaged spark plug boot can emit sparks.
Sparks can ignite fuel vapors under the engine cowl. To avoid damag-
ing the spark plug boot, do not use any sharp object or metal tool
such as pliers, screwdriver, etc. to remove the spark plug boot.
1 Open the spark plug access door.
2 Remove the spark plug boot (a) by twisting the rubber boot slightly and pull off.
3 Remove the spark plug to inspect and clean. Replace spark plug if electrode
is worn or the insulator is rough, cracked, broken, blistered or fouled.
4 Set the spark plug gap. See Specification Chart in General Information Section.
5 Before reinstalling spark plug, clean away dirt on the spark plug seat. Install
plug finger tight, and tighten 1/4 turn or torque to 20 lb. ft. (27 N·m).
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ENGINE IDLE SPEED ADJUSTMENT
1 With boat tied securely to dock, start engine and allow it to warm up.
2 With outboard in forward gear, reduce engine speed to idle.
3 Adjust the idle speed screw (a) to obtain the recommended engine idle speed.
(Refer to Specification Chart in General Information Section).
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LUBRICATION POINTS
Lubricate Points 1 thru 4 with Quicksilver or Mercury Precision
Lubricants 2-4-C Marine Lubricant with Teflon or Special
Lubricate 101.
1 Co-Pilot – Lubricate threads.
2 Swivel Bracket – Remove 4 bolts and rear cover and lubricate the inner nylon
bushings.
3 Tilt Lock Pin.
4 Transom Clamp Screws – Lubricate threads.
Lubricate Points 5 and 6 with light Weight Oil
5 Tilt Pivot.
6 Throttle Linkage – Lubricate pivot point.
Lubricate point 7 with Quicksilver or Mercury Precision
Lubricants Anti-Corrosion Grease or 2-4-C Marine Lubricant with
Teflon
7 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 to the shaft.

Mercury 2.5 Specifications

General

Brand	Mercury
Model	2.5
Category	Outboard Motor
Language	English