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
Carburetor Adjustments
SLOW SPEED MIXTURE ADJUSTMENT
1. Before starting engine, turn the slow speed mixture screw in until it is lightly seated then back it out 1-1/2 turns.
2. With boat tied securely to dock, start engine and allow it to warm up.
3. Shift the outboard into forward gear while maintaining idle speed.
4. Turn the slow speed mixture screw slowly in until the engine starts to misfire or stall due to a lean mixture.
Note the position of the screw slot.
5. Turn the slow speed mixture screw slowly out until the engine starts to load up or fire unevenly due to a rich
mixture. Note the position of the screw slot.
6. Set the slow speed mixture screw midway between the rich and lean setting. When in doubt, set the mixture
slightly rich rather than too lean.
ENGINE IDLE SPEED ADJUSTMENT
1. With boat tied securely to dock, start engine and allow it to warm up.
2. Shift the outboard into forward gear while maintaining idle speed.
3. Adjust the idle speed screw to obtain the recommended engine idle speed. Refer to General Information -
Specifications.
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