Carburetor Adjustments; Lubrication Points - Mercury 6 Manual

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MAINTENANCE
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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 the boat tied securely to dock, start engine and allow it to warm up.
3
Shift the outboard to forward gear and reduce engine speed to idle.
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.
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.
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High Speed Mixture Adjustment
The carburetor is equipped with a standard size high speed fixed jet that is
replaceable for operation at higher elevations.
Engine Idle Speed Adjustment
Engines Equipped With An Adjustable Idle Speed Screw
7
With boat tied securely to dock, start engine and allow it to warm up.
8
Shift outboard to forward gear and reduce engine speed to idle. Make sure the
Primer/Fast Idle Knob is pushed all the way in and turned to the slowest idle
speed.
9
Adjust the idle speed screw to obtain the recommended engine idle speed.
(Refer to Specification Chart in General Information Section.)
Engines Not Equipped With An Adjustable Idle Speed Screw
The carburetor has been calibrated for the engine to run at the recommended idle
speed. The engine idle speed is not adjustable.
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LUBRICATION POINTS

Lubricate Points 1 thru 8 with Quicksilver or Mercury Precision Lubricants
2-4-C Marine Lubricant with Teflon or Special Lubricate 101.
1
Tilt Tube - Lubricate fittings.
2
Transom Clamp Screws - Lubricate threads.
3
Swivel Bracket - Lubricate fitting.
4
Steering Friction Adjustment Shaft (Tiller Handle Models) - Lubricate fitting.
5
Tilt Lock Pins - Apply lubricant to pins. Pin (a) is spring loaded. Make sure this
pin is free to push in and out.
6
Lubricate along the entire tilt pin track on both transom brackets.
7
Lubricate the throttle and shaft cables, moving components and pivot
locations.
8-b
9
The end of the steering cable must be fully retracted into the outboard tilt
tube before adding lubricant. Adding lubricant to steering cable when ful-
ly extended could cause steering cable to become hydraulically locked.
An hydraulically locked steering cable will cause loss of steering control,
possibly resulting in serious injury or death.
8
Steering Cable Grease Fitting (If Equipped) - Rotate steering wheel to fully
retract the steering cable end (a) into the outboard tilt tube. Lubricate through
fitting (b).
Lubricate Points 9 With Light Weight Oil
9
Steering Link Rod Pivot Points - Lubricate points.
Lubricate Point 10 with Quicksilver or Mercury Precision Lubricants
Anti-Corrosion Grease or 2-4-C Marine Lubricant with Teflon
10
Propeller Shaft - Refer to Propeller Replacement for removal and installation
of the propeller. Coat the entire propeller shaft with lubricant to prevent the
propeller hub from corroding to the shaft.
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WARNING
90-10104R40