Mercury 135 Optimax User Manual

MAINTENANCE
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2. Remove the spark plugs 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 0.80 mm (0.031 in.)
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
Compressor Air Intake Filter
The filter should be changed every 100 hours of operation, or once a season.
IMPORTANT: Never run the engine without the air filter.
REMOVAL
1. Remove flywheel cover from engine.

Mercury 135 Optimax Specifications

General

Starting	Electric
Exhaust	Through Prop
Horsepower	135 HP
Fuel Induction System	Direct Fuel Injection
Alternator Amp	60 Amp
Shaft Length	20", 25"
Full Throttle RPM	5250-5750
Steering	Hydraulic