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MAINTENANCE
10-HOUR INSPECTION
10-HOUR INSPECTION
IMPORTANT: All Johnson outboard owners are
encouraged to return their new engines to an
authorized dealer for a mechanical check.
This check should be performed after approxi-
mately 10 operating hours. The cost of this check
should be figured at local dealer labor rates and
paid for by the engine owner.
The 10-hour inspection should check:
• Anticorrosion anodes functionality
• Water intake screens
• Overboard water pump indicator
• Steering operation
• Throttle and shift operation
• Emergency stop circuit and lanyard functionality
• Fuel system components, repair any leaks
• Fuel filter, eliminate any contamination
• Fasteners, tighten loose components
• Thermostat operation
• Engine to transom mounting hardware
• Electrical and ignition wires and connections
ANTI-CORROSION
PROTECTION
Sacrificial Anodes
Galvanic corrosion occurs in fresh or salt water.
Salt, brackish, and polluted water can accelerate
corrosion. “Sacrificial” anodes are intended to pro-
tect the underwater metal components of the out-
board from galvanic corrosion.
Outboards are equipped with sacrificial anodes.
Visually inspect anodes and metal components
below water level. Erosion of anodes is normal
and indicates the anodes are functioning properly.
IMPORTANT: Anodes that are not eroding may
indicate that the anodes are not properly
grounded. Anodes and the mounting screws must
be clean and tight for effective corrosion protec-
tion.
1. Gearcase housing anode 005882
Powerhead Anode 005883
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