Section II. ENGINE ADJUSTMENTS

3.2.6

Discharge Nozzle Assembles.

The discharge

nozzle assembly may be readily attached to the outlet

end of the discharge hose assembly by means of quick-

connect fittings. The nozzle is non-automatic and the

lever must be hand depressed to deliver fuel to the air-

craft or vehicle. A grounding strap is securely attached

to the nozzle assembly and the free end of this ground

must be clamped to the aircraft or vehicle prior to in-

serting the nozzle into the fuel filler tube, to avoid the

possibility of static electrical discharge. Figure 12

Section II

ENGINE ADJUSTMENTS

CAUTION: NEVER ATTEMPT TO OPERATE

General.

3.3

THE ENGINE WITHOUT PLACING LIQUID IN THE PUMP

HOUSING.

This section contains instructions to accom-

plish minor engine adjustments, which may become

necessary for smooth operation of the engine.

3.4

Carburetor Adjustments.

N O T E : DO NOT MAKE ANY

A D J U S T M E N T S WITHOUT FIRST TESTING THE ENGINE

Each unit

O P E R A T I O N AT THE FACTORY SETTING.

has been factory tested to assure proper operation at full

load. If unusual atmospheric conditions exist or if vibra-

tion or tampering prevents smooth engine operation, ad-

justment may be accomplished as follows:

3.4.1

Close needle valve (turn clock-

Initial Adjustment.

wise) then open 1-1/2 turns (turn counter-clockwise).

This initial adjustment will permit the engine to be started

and warmed up before making the final adjustment.

With engine running at normal

Final Adjustment.

3.4.2

operating speed, close the needle valve (turn clockwise)

until engine starts to lose speed (lean mixture). T h e n

slowly open needle valve (turn counterclockwise) to the

point of smoothest operation. If the engine tends to stall

or die out, it usually indicates the mixture is slightly lean

and it may be necessary to open the needle valve to pro-

vide a richer mixture.

3.5

Governor Control. To increase engine speed, turn speed ad-

justing screw counterclockwise. To decrease engine speed,