Valve Lash Adjustment; Battery Maintenance - Generac GT-530 El Manual Del Propietario

Maintenance
Clean the plug(s) by scraping or washing with a
4.
wire brush and commercial solvent. Do not blast
the plug(s) to clean.
Check the spark plug gap using a wire feeler
5.
gauge. See Figure 4-3. Adjust the gap by carefully
bending the ground electrode to the specification in
Section 2.4.2 — Engine.
Figure 4-3. Spark Plug Gap Adjustment
4.7 — Valve Lash Adjustment
Check the valve clearance after the first 25 hours of oper-
ation, then after 400 hour intervals. Adjust if necessary.
Important: Please contact a dealer for service assis-
tance. This is a very important step to ensure longest life
for the engine.
B
A
Figure 4-4. Valve Clearance Adjustment
To check valve clearance:
• The engine should be cool before checking.
Adjustment is not needed if valve clearance is
within the specification in Section 2.4.2 — Engine.
• Remove spark plug wires and position wires away
from plugs.
• Remove spark plugs.
18
To adjust valve clearance (see Figure 4-4.):
000211
NOTE: Hold the rocker arm jam nut in place as the pivot
ball stud is turned.
C
D
NOTE: Start all four screws before tightening or it will
not be possible to get all the screws in place. Make sure
the valve cover gasket is in place.
000602
4.8 — Battery Maintenance
The battery should be regularly inspected per the Service
Schedule:
• Make sure the piston is at top dead center (TDC) of
its compression stroke (both valves closed). To get
the piston at TDC, remove the intake screen at the
front of the engine to gain access to the flywheel
nut. Use a large socket and socket wrench to
rotate the nut and hence the engine in a clockwise
direction. While watching the piston through the
spark plug hole. The piston should move up and
down. The piston is at TDC when it is at its highest
point of travel.
•
The engine should be cool before adjustment.
• Remove spark plug wires and position wires away
from plugs.
• Remove spark plugs.
•
Remove the four screws attaching the valve cover.
Remove and discard gasket.
• Loosen the rocker jam nut (A). Using a 10mm Allen
wrench (530 cc engine) or a 13mm Allen wrench
(990 cc engines),
• Turn the pivot ball stud (B) while checking clear-
ance between the rocker arm (C) and the valve
stem (D) with a feeler gauge. Correct clearance is
in the specification in Section 2.4.2 — Engine.
• When valve clearance is correct, hold the pivot ball
stud in place with the Allen wrench and tighten the
rocker arm jam nut. Tighten the jam nut to 19.68
Nm (174 in-lbs) torque. After tightening the jam
nut, recheck valve clearance to make sure it did
not change.
• Install new valve cover gasket.
• Install the valve cover. Tighten fasteners in a cross
pattern, torquing to 5.4 Nm (48 in-lbs).
• Install spark plugs.
• Re-attach the spark plug wire to the spark plug.
•
Repeat the process for the other cylinder, if neces-
sary.
With the generator shut down, lift the lid and
1.
remove the front panel.
Inspect the battery posts and cables for tightness
2.
and corrosion. Tighten and clean as necessary.
Owner's Manual for 50 Hz Air-cooled Generators