Mercury 4-STROKE User Manual

3. Set the spark plug gap to specification.
26947
Spark Plug
Spark plug gap 0.9 mm (0.035 in.)
4. Before installing spark plug, clean off any dirt on the spark plug seat.
Install plug finger‑tight, and then tighten 1/4 turn or torque to
specifications.
Description
Nm lb‑in. lb‑ft
Spark plug 27 20
Timing Belt Inspection
1. Inspect the timing belt and have it replaced by an authorized dealer if any
of the following conditions are found.
a. Cracks in the back of the belt or in the base of the belt teeth.
b. Excessive wear at the roots of the cogs.
c. Rubber portion swollen by oil.
d. Belt surfaces roughened.
e. Signs of wear on edges or outer surfaces of belt.
27578
Changing Engine Oil
ENGINE OIL CAPACITY
Engine oil capacity is approximately 800 ml (27 fl. oz.).
MAINTENANCE
eng 89

Mercury 4-STROKE Specifications

General

Brand	Mercury
Model	4-STROKE
Category	Outboard Motor
Language	English