Mercury 4 TwoStroke, Operation, Maintenance And Installation Manual

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2. Remove the spark plug to inspect. Replace spark plug if electrode is worn
or the insulator is rough, cracked, broken, blistered or fouled.
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3. Set the spark plug gap to specification.
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Spark Plug
Spark plug gap
1.0 mm (0.040 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
Lubrication Points
1. Lubricate the following with Quicksilver or Mercury Precision Lubricants
2‑4‑C with PTFE.
Tube Ref
No.
Description Where Used Part No.
95
2-4-C with PTFE
Co-pilot threads, swivel bracket,
transom clamp screws, tiller handle
bushing, shift handle detent
92-802859A 1
• Co‑Pilot ‑ Lubricate threads.
MAINTENANCE
44
eng