Generac Power Systems GTV-990 Manual page 22

SECTION 3: CARBURETION
CARBURETOR INSTALLATION - VERTICAL SHAFT
(Models EVT-04629-0, EVT-04629-1, 04629-2, EVT-04717-0,
04717-1, EVT-04797-0, 04806-0, 04857-0, 04858-0, 04862-0,
04861-0)
1. Slide new carburetor gasket onto the studs.
2. Slide the carburetor onto the studs.
3. Slide new plenum gasket onto the studs.
4. Slide the plenum onto the studs.
5. Install the nuts on the four studs, and torque to 5.4 Nm
(4 ft. lbs.).
6. Connect the fuel line.
7. Using a pliers, reassemble the balljoint on the carburetor.
8. Connect the breather tube.
9. Connect the fuel-shutoff solenoid.
MANIFOLD
PLENUM
PLENUM
GASKET
Figure 3-3.
10. Reinstall choke link in carburetor and clip the link into the
bellcrank.
11. Perform a static governor adjustment.
12. Start engine and allow to warm up for 5 minutes.
13. Move speed control lever to slow speed position and hold
throttle lever against idle stop screw.
14. Adjust stop screw to maintain ~1200 RPM idle.
15. 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.
16. With the speed control in the high speed position, adjust
CLINCHING
CARBURETOR
GASKET
1. Loosen the clinching screw on the governor lever.
2. Hold governor lever in WOT position and rotate the gov-
3. While holding this position, re-torque the clinching screw
4. Check to make sure that the throttle travels from WOT to
3-2
Figure 3-4.
the high speed screw to obtain the desired engine speed.
SCREW
Figure 3.5.
STATIC GOVERNOR ADJUSTMENT
ernor arm clockwise.
to 11.3 Nm (100 in-lbs.).
IDLE. If it doesn't, the governor needs to be reset again.