Timing Belt Inspection; Changing Engine Oil - Mercury 15 FourStroke Manual

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
Spark plug

Timing Belt Inspection

Inspect the timing belt and have it replaced by an authorized dealer
if any of the following conditions are found.
• Cracks in the back of the belt or in the base of the belt teeth
• Excessive wear at the roots of the cogs
• Rubber portion swollen by oil
• Belt surfaces roughened
• Signs of wear on edges or outer surfaces of belt

Changing Engine Oil

ENGINE OIL CAPACITY
Engine oil capacity is approximately 1.0 liter (1.1 U.S. quart).
OIL CHANGING PROCEDURE
1. Lock the outboard in the full tilt up position.
2. Position the outboard so the drain hole is facing downward.
3. Remove the drain plug and drain the engine oil into an
appropriate container.
IMPORTANT: Do not use a crankcase oil pump when changing
the oil or engine damage may occur.
MAINTENANCE
89
Nm lb. in.
20
31931
lb. ft.
14