Johnson J10RSUR

58
MAINTENANCE
FUEL SYSTEM
FUEL SYSTEM
Visual inspection of fuel system components
reduces the possibility of undetected fuel system
leaks. Inspect fuel system components regularly.
Fuel Filter
Johnson outboards are equipped with a service-
able fuel filter element. Clean or replace the ele-
ment as needed. Refer to FUEL PUMP SERVICE
on p. 106.
Air Silencer
The air silencer on Johnson outboards minimizes
audible noise related to air flow into the engine.
Routine cleaning of the air silencer is recom-
mended to remove any accumulation of fluid.
Hoses and Connections
Check condition of all hoses and connections
related to the fuel system.
• Visually inspect all components.
• Observe all clamps, hoses, and connections
while outboard is running.
• Replace all damaged components.
• Repair all leaks.
SPARK PLUGS
Spark plugs should be removed and examined
periodically. Replace worn, fouled or damaged
spark plugs.
• Remove spark plugs and inspect condition.
• Set spark plug gap on new, replacement spark
plugs.
• Apply Electrical Grease to the ribbed portion of
the spark plug ceramic and to the opening of
the spark plug cover to prevent corrosion.
See table below for recommended spark plug
data and gap setting.
WARNING
Failure to check for fuel leakage could
allow a leak to go undetected, resulting in
fire or explosion.
1. Fuel Pump
2. Filter element
DR3000
1
2
Models Recommended Spark Plug
9.9/15
Champion QL82C @
0.030 in. (0.8 mm)