Generac Power Systems XP, Руководство пользователя

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14
Figure 14 - air Filter
BASE
FILTER
COVER
3.4.9 cLeaN sParK arresTor screeN
The engine exhaust muffler has a spark arrestor screen. Inspect
and clean the screen at least once each year (Figure 15). If unit is
used regularly, inspect and clean more often.
NOTE:
If using the generator on any forest-covered, brush-covered
or grass-covered unimproved land, it must equipped with a
spark arrestor. The spark arrestor must be maintained in good
condition by the owner/operator.
clean and inspect the spark arrestor when the engine is at
ambient temperature as follows:
1. Remove spark arrestor from muffler by removing the screw.
2. Inspect screen and replace if torn, perforated or otherwise
damaged. DO NOT USE a defective screen. If screen is not
damaged, clean it with commercial solvent.
3. Replace the spark arrestor and secure with the screw.
Figure 15 - spark arrestor
3.4.10 aDJUsTING VaLVe cLearaNce
After the first 50 hours of operation, check the valve clearance
in the engine and adjust if necessary.
Important:
If feeling uncomfortable about doing this procedure or
the proper tools are not available, please take the generator to the
nearest service center to have the valve clearance adjusted. This is
a very important step to insure longest life for the engine.
To check valve clearance:
1. Make sure the engine is at room temperature 16 Deg. to 27
Deg. C.
2. Make sure that the spark plug wire is removed from the spark
plug and out of the way. Remove spark plug.
3. Remove the four screws attaching the valve cover(s).
4. 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 up as high as it can go.
5. Insert a 0.05 - 0.1mm feeler gauge between the rocker arm
and valve stem. Correct clearance is when a slight drag is
felt when sliding the gauge back and forth. If the clearance
is either excessively loose or tight the rocker arms will need
adjusting.
To adjust valve clearance:
1. Loosen the rocker jam nut (Figure 16). Use a 10mm allen
wrench to turn the pivot ball stud, while checking clearance
between the rocker arm and the valve stem with a feeler
gauge. Correct clearance is 0.05-0.1 mm.
NOTE:
The rocker arm jam nut must be held in place as the pivot ball
stud is turned.
When valve clearance is correct, hold the pivot ball stud in place
with the allen wrench (13mm) and tighten the rocker arm jam nut.
Tighten the jam nut to 19.6 N*m torque. After tightening the jam
nut, recheck valve clearance to make sure it did not change.
2. Install new valve cover gasket.
3. Re-attach the valve cover.
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. replace spark plug.
4. Re-attach the spark plug wire to the spark plug.
Maintenance