Check/Adjust Valve Clearance; Check Valve Clearance - Generac Power Systems 6055 Owner's Manual

Maintenance
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.
3.
Remove spark plugs from cylinder head using a 5/8 inch spark plug socket.
4.
Check condition of threads in cylinder head and on spark plugs. If necessary, soften deposits with penetrating oil
5.
and clean out with a thread chaser.
Clean spark plugs using a wire brush and commercial solvent. Do not blast spark plugs. Use new spark plugs if
6.
necessary.
See Figure 4-5. Check spark plug gap using a wire feeler gauge. Adjust gap by carefully bending ground elec-
7.
trode to the dimensions in Section 2.5.2 - ENGINE.
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 4-pin connector from AVR.
3.
Remove three screws to release AVR fan from AVR. See Figure 4-6.
4.
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.
Remove spark plugs from cylinder head using a 5/8 inch spark plug socket.
7.
Remove four screws to release valve cover.
8.
30
Figure 4-5. Adjust Spark Plug Gap
Synergy Automatic Standby Generator Owner's Manual