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Mercury 250 Pro XS OptiMax

Mercury 250 Pro XS OptiMax
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MAINTENANCE
84 eng
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
Battery Inspection
The battery should be inspected at periodic intervals to ensure
proper engine starting capability.
IMPORTANT: Read the safety and maintenance instructions
which accompany your battery.
1. Turn off the engine before servicing the battery.
2. Ensure the battery is secure against movement.
3. Battery cable terminals should be clean, tight, and correctly
installed. Positive to positive and negative to negative.
4. Ensure the battery is equipped with a nonconductive shield
to prevent accidental shorting of battery terminals.

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