Remove the wing nut from
the air cleaner cover, and
remove the cover.
Remove the wing nut from
the air filter, and remove the
Remove the foam filter from
the paper filter.
Inspect both air filter
elements, and replace them if
they are damaged. Always
replace the paper air filter
element at the scheduled
interval (see page ).
CYCLONE DUAL-FILTER-ELEMENT TYPE
SPECIAL PAN SCREW (3)
Clean the air filter elements if they are to be reused.
Paper air filter element: Tap the filter element several times on a
hard surface to remove dirt, or blow compressed air [not
exceeding 207 kPa (2.1 kgf/cm , 30 psi)] through the filter
element from the inside. Never try to brush off dirt; brushing will
force dirt into the fibers.
Foam air filter element: Clean in warm soapy water, rinse, and
allow to dry thoroughly. Or clean in nonflammable solvent and
allow to dry. Dip the filter element in clean engine oil, then
squeeze out all excess oil. The engine will smoke when started if
too much oil is left in the foam.
CYCLONE TYPE ONLY: Remove the three pan-head screws from
the precleaner cap, then remove the cyclone housing and air
guide. Wash the parts with water, dry them thoroughly, and
Be sure to install the air guide as shown in the illustration.
Install the cyclone housing so the air intake tab fits into the
groove in the precleaner cap.
AIR CLEANER COVER
PAPER FILTER ELEMENT
FOAM FILTER ELEMENT
Wipe dirt from the inside of the air cleaner case and cover, using
a moist rag. Be careful to prevent dirt from entering the air duct
that leads to the carburetor.
Place the foam air filter element over the paper element, and
reinstall the assembled air filter. Be sure the gasket is in place
beneath the air filter. Tighten the air filter wing nut securely.
Install the air cleaner cover, and tighten the wing nut securely.
Remove the wing nut, and remove the air cleaner cap and cover.
Remove the air filter element from the cover. Wash the cover
and filter element in warm soapy water, rinse, and allow to dry
thoroughly. Or clean in nonflammable solvent and allow to dry.
Dip the filter element in clean engine oil, then squeeze out all
excess oil. The engine will smoke if too much oil is left in the
Empty the used oil from the air cleaner case, wash out any
accumulated dirt with nonflammable solvent, and dry the case.
Fill the air cleaner case to the OIL LEVEL mark with the same oil
that is recommended for the engine (see page ).
60 cm (2.0 US oz , 2.1 Imp oz)
Reassemble the air cleaner, and tighten the wing nut securely.