OUTBOARD INSTALLATION
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maximum speed is the only objective. 56.0 cm (22 in.), a propeller that is designed
for surfacing operation is usually preferred.
f - Maximum boat speed (MPH) anticipated
NOTICE
1. The outboard should be mounted high enough on the transom so the exhaust
relief hole will stay at least 25.4 mm (1 in.) above the waterline when the engine
is running at idle speed. Having the exhaust relief hole above the waterline will
prevent exhaust restrictions. Exhaust restrictions will result in poor performance
at idle.
2. Add 12.7 cm (5 in.) for XL models to the listed outboard mounting heights.
3. The mounting height of the outboard must not exceed 63.5 cm (25 in.) for L
models, 76 cm (30 in.) for XL models. Mounting the outboard higher may cause
damage to the gearcase components.
Increasing the mounting height will usually:
• Reduce steering torque
• Increase top speed
• Increase boat stability
• Cause propeller to break loose during planing
Drilling Outboard Mounting Holes
IMPORTANT: Before drilling any mounting holes, carefully read Determining Recommended Outboard Mounting
Height and install outboard to the nearest recommended mounting height.
1. Mark four mounting holes on the transom using the transom drilling fixture.
or69-1
a
a
b
c
a - Drill guide holes
b - Transom drilling fixture
c - Transom centerline
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