Generac Power Systems GTV-990 Manual page 65

ADJUST VALVE CLEARANCE
1. Set No. 1 cylinder at TDC (Top Dead Center), compression
stroke.
a. Adjust rocker arms and check clearance, Figure 13-15.
Valve Clearance (cold) IN and EX 0.076mm (.003")
b. Torque ball studs and jam nuts to 19 Nm (14 ft. Ibs.).
2. Repeat for No. 2 cylinder.
Figure 13-15. Adjust Valve Clearance
FINGER GUARD
1
ROTATING SCREEN
2
3 INTAKE MANIFOLD
ASSEMBLY
4 OIL COOLER
5 BLOWER HOUSING
6
UPPER WRAPPER
7
LOWER WRAPPER
8
VALVE COVER
3
4
Figure 13-17. Install Blower Housing
3. Install valve covers with new gaskets, Figure 13-16
a. Torque bolts to 6.8 Nm (5 ft. lbs.).
Figure 13-16. Install Valve Covers
GENERAL ASSEMBLY
1. Install cylinder shields (wrappers).
a. Torque M5 screws to 2.8 Nm (25 in. lbs.).
b. Torque M6 screws to 4.5 Nm (40 in. lbs.).
c. Connect ignition ground wire to ignition kill terminal in
backing plate.
6
8
7
13-5
SECTION 13: ENGINE ASSEMBLY
5
2
1