WycoTool WBP50 Backpack - Manual (Page 13)

User Manual
Page 13 March 2014
OTEE: N Running the engine with a low oil level can cause
engine damage . This type of damage is not covered
by the Distributor’s Limited Warranty .
4 . Reinstall the oil filler cap/dipstick securely .
Air Cleaner
A dirty air cleaner will restrict air flow to the carburetor,
reducing engine performance . If you operate the engine in
very dusty areas, clean the air filter more often than specified
in the “Maintenance Schedule” on page 11 .
OTEE: N Operating the engine without an air filter, or with a
damaged air filter, will allow dirt to enter the engine,
causing rapid engine wear . This type of damage is
not covered by the Distributor’s Limited Warranty .
Inspection
Remove the air cleaner cover and inspect the filter element .
Clean or replace a dirty filter element . Always replace a
damaged filter element .
Cleaning
1 . Clean the filter element in warm soapy water, rinse, and
allow to dry thoroughly . Or clean the filter element in a
non-flammable solvent and allow to dry .
2 . 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 element .
3 . Wipe dirt from the air cleaner body and cover, using
a moist rag . Be careful to prevent dirt from entering
the carburetor .
Spark Plug
Recommended Spark Plugs: CR5HSB (NGK) U16FSR-UB
(DENSO) SCHEDULE .
OTEE: N An incorrect spark plug can cause engine damage .
For good performance, the spark plug must be properly
gapped and free of deposits .
1 . Disconnect the spark plug cap and remove any dirt from
round the spark plug area .
2 . Remove the spark plug with a 5/8" spark plug wrench .
3 . Inspect the spark plug . Replace it if it is damaged or badly
fouled, if the sealing washer is in poor condition, or if the
electrode is worn .
4 . Measure the spark plug electrode gap with a wire-
type feeler gauge . Correct the gap, if necessary, by
carefully bending the side electrode . The gap should be
0 .024…0 .028" (0 .60…0 .70 mm) .
Side electrode
Sealing washer
0.60 . . . 0.70 mm
(0.024 . . . 0.028 in.)
5 . Install the spark plug carefully, by hand, to avoid
cross-threading .