Exterior Care; Worn/Dull Impeller - Mercury 25 Jet 4-Stroke Manual

2. Lift rear of cowl and disengage front hook.
INSTALLATION
1. Lower the top cowl over the engine. Bring the front of the cowl
down first and engage the front hook, then lower the cowl into
its seated position with the bottom cowl.
2. Apply some downward pressure on the bottom cowl and then
lock the cowl in place by pushing in the cowl latch. Ensure the
top cowl is securely fastened by pulling up on the back of the
cowl.

Exterior Care

Your outboard is protected with a durable baked enamel finish.
Clean and wax often using marine cleaners and waxes.

Worn/Dull Impeller

The intake of gravel through the pump can round off and wear the
leading edges of the impeller. Some conditions that could be
experienced from a worn/dull impeller are as follows:
• Noticeable performance loss, especially on acceleration
• Difficulty getting the boat on plane
• An increase in engine RPM at wide open throttle
IMPORTANT: Do not sharpen or alter the top side lifting angle.
MAINTENANCE
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