SECTION 3
Owner’s Manual
Maintenance Requirements
45
C
ARBURETOR
T
UNING
The Raider Outboards 50 HP is delivered with the carburetor pre-
tuned from the factory. However, additional fine adjustment may
be required to achieve optimum motor performance based on
environmental factors, fuel supply, or Operator preference.
The Idle Mixture Set Screw is set from the factory to 2 ¾ turns ‘out’
and should not be adjusted further. Over time or through various
operational cycles this setting may be changed. Adhere to a
scheduled service interval as recommended in this section. More
stringent intervals may be required based on multiple submersions,
heavy fuel use, operating conditions or personal experience.
Idle Mix Set Screw Reset
To reset the Idle Mixture Set Screws to the factory
position, follow these steps for each carburetor,
beginning with the top carburetor:
Slowly turn the set screw clockwise. Stop as soon
as resistance is met. Tightening the set screw will
result in damage to the carburetor.
Slowly turn the set screw 2 ¾ turns counter-
clockwise.
T
he Idle Speed Adjustment Screw is set from the
factory so that the engine idles between 950 and
1050 RPM in neutral. Differences in atmospheric
conditions, such as temperature, humidity, or
altitude, will cause the engine to idle at different
speeds.
(Idle Mix Set Screw shown in red)
Running the motor with the idle mixture set higher (more fuel) will cause the motor to burn too
much fuel, resulting in loss of power, worsened fuel economy, and internal carbon buildup which
can lead to further loss of power, increased maintenance, and eventual motor damage.
Running the motor with the idle mixture set too lean (less fuel) will result in insufficient
lubrication of the motor’s internal components and will cause damage to the motor.
Содержание NSN 3HD 2805-01-652-3076
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