Generac Power Systems GTV-990 Manual page 27

CLINCHING
SCREW
Figure 4-4. Static Governor Adjustment
Figure 4-5. Dynamic Governor Adjustment
SECTION 4: GOVERNOR CONTROLS AND GOVERNOR
DYNAMIC GOVERNOR ADJUSTMENT
1. Start engine and allow to warm up for 5 minutes.
2. Move speed control lever to slow speed position and hold
throttle lever against idle stop screw.
3. Adjust stop screw to maintain 1200 RPM idle.
4. Slowly move speed control lever to high-speed position.
Do not exceed 4000 RPM.
Note: The high-speed screw may need adjusting to reach
the speed control stop without exceeding 4000 RPM.
5. With the speed control in the high-speed position, adjust
the high-speed screw to obtain the desired engine speed.
Figure 4-6. Dynamic Governor Adjustment
4-3