Check/Adjust Valve Clearance; Check Valve Clearance - Generac Power Systems 15 kW EcoGen Owner's Manual

Clean spark plugs using a wire brush and commercial solvent. Do not blast spark plugs. Use new spark plugs if
6.
necessary.
See Figure 4-11. Check spark plug gap using a wire feeler gauge. Adjust gap by carefully bending ground elec-
7.
trode to 1.02 mm (0.040 in).
Finger tighten spark plugs into cylinder head, and then using a spark plug socket, tighten to 15-18 ft-lbs (20-25
8.
Nm).
Install spark plug cables onto spark plug terminals.
9.
Install AVR filter housing. Install screw to fasten AVR filter housing to back panel and torque to 50-96 in-lbs (6-11
10.
Nm).
4.7.3— Check/Adjust Valve Clearance
IMPORTANT: If uncomfortable performing this procedure or the proper tools are not available, contact the
nearest independent Authorized Service Dealer for assistance. This procedure is a very important to ensure
maximum engine service life.
4.7.3.1— Check Valve Clearance
Verify that engine is at ambient air temperature.
1.
+
The AVR remains charged for up to three minutes after power down. To avoid potential electric shock,
allow five minutes to elapse before removing AVR filter housing.
Remove screw to release AVR filter housing from back panel. Remove AVR filter housing. See A of Figure 4-2.
2.
Depress external latch to disconnect 20-pin connector from AVR.
3.
Remove two screws to release AVR brackets from back panel. See Figure 4-12.
4.
NOTE: AVR wires are long enough to allow unit to be placed on muffler cover panel.
Left
Remove spark plug cables from spark plug terminals.
5.
NOTE: When disconnecting spark plug cable from spark plug terminal, always grasp and pull on the boot at
the terminal end of the cable. Pulling on cable portion can result in parts damage.
Thoroughly clean area around spark plugs.
6.
EcoGen Automatic Standby Generator Owner's Manual
Figure 4-12. Remove AVR Bracket Screws
Maintenance
Right
20-Pin
Connector
27