Guardian Technologies 04760-2, 04758-2, 04759-2 Engine Governor Adjustment, ‹ 2.7.1 7 KW UNITS

Section 2 — Post Installation Start-up and Adjustments

Air-cooled 7 kW, 12 kW and 15 kW Generators

Do not make any unnecessary adjustments. Factory settings are correct for most applica- tions. However, when making adjustments, be careful to avoid overspeeding the engine.

If this procedure or equipment are not available, locate the nearest Authorized Dealer and they can perform the adjustments.

NOTE:

A service fee may be charged for this adjustment.

2.7ENGINE GOVERNOR ADJUSTMENT

If both AC frequency and voltage are correspondingly high or low, adjust the engine governor as follows:

‹2.7.1 7 KW UNITS

1.Loosen the governor clamp bolt (Figures 2.3 and 2.4).

2.Hold the governor lever at its wide open throttle position, and rotate the governor shaft clockwise as far as it will go. Then, tighten the governor lever clamp bolt to 70 inch-pounds (8 N-m).

3.Start the generator; let it stabilize and warm up at no-load.

4.Connect a frequency meter across the generators AC output leads.

Figure 2.3 — Single Cylinder Engine Governor

Adjustment

SECONDARY

ADJUST SCREW

GOVERNOR

SHAFT

GOVERNOR	PRIMARY
CLAMP
	ADJUST
BOLT
	SCREW

5.Turn the primary adjust screw to obtain a fre- quency reading of 61.5 Hz. Turn the secondary adjust screw to obtain a frequency reading of 62.5 Hz.

6.When frequency is correct at no load, check the AC voltage reading. If voltage is incorrect, the volt- age regulator may require adjustment.

‹2.7.2 12 KW AND 15 KW UNITS

1. Loosen governor clamp bolt (See Figure 2.4).

Figure 2.4 — V-twin Engine Governor

Adjustment

Idle Spring

Governor

Shaft

(Rotate

Clockwise)

Governor Clamp Bolt	No Load Idle
	Adjustment Screw

2.Completely remove the idle spring.

3.With governor arm at wide open throttle position, rotate governor shaft fully clockwise. Tighten clamp bolt to 84 inch-pounds.

4.Start unit and apply full load. Use full load speed adjust screw (Figure 2.5) to adjust frequency to 58 Hz.

Figure 2.5 — V-twin Full Load Speed Adjust

Screw

Full Load Speed Adjust Screw

13