Mercury 2.5 Operation And Installation Manual

3. Remove the spark plug to inspect. Replace spark plug if electrode is worn
or the insulator is rough, cracked, broken, blistered or fouled.
28438
4. Set spark plug gap to specifications.
26947
Spark Plug
Spark plug gap 1.0 mm (0.040 in.)
5. Before installing spark plug, clean off any dirt on the spark plug seats.
Install plugs finger tight, and then tighten 1/4 turn or torque to
specifications.
Description
Nm lb. in. lb. ft.
Spark plug 27 20
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.
MAINTENANCE
46 eng

Mercury 2.5 Specifications

General

Brand	Mercury
Model	2.5
Category	Outboard Motor
Language	English