Section III. OPERATOR'S MAINTENANCE
Instructions in this section are published for the
information and guidance of the operator to maintain the
3-7. Air Cleaner Element Service
a. Remove air cleaner element as shown in figure
b. Wash the element in clean solvent (not fuel
mix) and dry thoroughly before use. If cleaning with
solvent is not possible, clean the element by tapping
against a flat surface or by blowing out dust and dirt with
a low pressure air hose.
c. Replace the element after 100 hours of
operation or when it appears clogged and cleaning will
not restore engine power.
3-8. Muffler Service
a. Loosen lock nut and unscrew muffler from
clean out all of the perforations of the muffler by
inserting the tool into each end and picking out carbon
deposits. (fig. 34.)
Figure 3-3. Air cleaner element removal.
It is necessary to clean from both
ends because of the solid baffle in
chamfered edges of the cylinder exhaust port. Clean
the center of the muffler.
the cylinder fins and blow out all loose particles from the
exhaust manifold and cylinder exhaust port before
reinstalling the exhaust manifold and muffler.
3-10. Fuel Line Replacement
Cylinder Exhaust Port and Exhaust Manifold
If fuel line replacement is required, the method of
installing the new lines over the fittings is to heat the
a. Remove the two screws securing the exhaust
ends of the new fuel lines in a port of boiling water until
they are soft. While soft, the line can be stretched
b. Turn the generator rotor by hand until the piston
easily over the fitting as required. This softening is
is at bottom dead center position. This will prevent
required only on new fuel lines, since once they are
damage to piston and rings and permit removal of loose
stretched, they will retain their shape.
carbon particles after cleaning exhaust by cranking the
engine several times with manifold removed.
c. Using a wooden scraper, carefully remove the
carbon deposits from the cylinder exhaust port. Be
careful not to scratch the piston or damage the