Mercury 18 M User Manual

MAINTENANCE
93
4. Before installing spark plugs, 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
Lubrication Points
Only let an authorized Mercury service shop perform service or
maintenance on this product. Be sure to use genuine parts,
genuine lubricants, or recommended lubricants.
Changing gear oil
1. Place the outboard in a vertical operating position.
2. Place a drain pan below the outboard.
3. Remove the oil plugs (upper and lower) and drain the gear oil
completely.
40473
b
a
c
a - Upper oil plug
b - Lower oil plug
c - Water strainer

Mercury 18 M Specifications

General

Brand	Mercury
Model	18 M
Category	Outboard Motor
Language	English