Engine Oil; Recommended Oil; Oil Level Check; Oil Change - Honda GX25 Owner's Manual

32Z3V6000.book Page 5 Monday, June 11, 2018 1:59 PM

ENGINE OIL

Oil is a major factor affecting performance and service life.
Use 4-stroke automotive detergent oil.

Recommended Oil

See Figure 3, page A-2.
Use 4-stroke motor oil that meets or exceeds the requirements
for API service classification SE or later (or equivalent). Always
check the API service label on the oil container to be sure it
includes the letters SE or later (or equivalent).
SAE 10W-30 is recommended for general use. Other viscosities
shown in the chart may be used when the average temperature
in your area is within the indicated range.

Oil Level Check

See Figure 4, page A-2.
Check the engine oil level before each use, or every 10 hours if
operated continuously.
Check the engine oil level with the engine stopped and in a level
position.
1. Remove the oil filler cap/dipstick [1] and wipe it clean.
2. Insert and remove the oil filler cap/dipstick without screwing
it into the oil filler neck, then remove it to check the oil level
shown on the dipstick.
3. If the oil level is near or below the lower limit mark on the
dipstick, fill to the bottom edge of the oil fill hole [2] with the
recommended oil. To avoid overfilling or underfilling, be
sure the engine is in a level position, as shown, while adding
oil.
4. Reinstall the oil filler cap/dipstick and tighten securely.
Running the engine with a low oil level can cause engine
damage. This type of damage is not covered by the Warranty.

Oil Change

See Figure 5, page A-2.
Drain the used oil when the engine is warm. Warm oil drains
quickly and completely.
1. Check that the fuel filler cap [1] is tightened securely.
2. Place a suitable container below the engine to catch the used
oil.
3. Remove the oil filler cap/dipstick and drain the oil into the
container by tipping the engine toward the oil filler neck [2].
Please dispose of used motor oil in a manner that is compatible
with the environment. We suggest you take used oil in a sealed
container to your local recycling center or service station for
reclamation. Do not throw it in the trash, pour it on the ground,
or pour it down a drain.
4. With the engine in a level position, fill to the bottom edge of
the oil fill hole with the recommended oil.
Some oil will remain in the engine after draining. When
refilling with fresh oil, start with less than engine oil capacity.
Slowly add enough oil to fill to the bottom edge of the oil fill
hole.
Engine oil capacity: GX25: 0.08 L
GX35: 0.10 L
GX50: 0.13 L
Running the engine with a low or excessive oil level can
cause engine damage. This type of damage is not covered by
the Warranty.
5. Reinstall the oil filler cap/dipstick securely.
If any oil is spilled, make sure to wipe it up.

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 element more often than
specified in the MAINTENANCE SCHEDULE (see page 4).
Operating the engine without an air filter element, or with a
damaged air filter element, will allow dirt to enter the engine,
causing rapid engine wear. This type of damage is not covered
by the Warranty.
Inspection (foam air filter element type)
See Figure 6, page A-2.
Press the latch tab [1] on the top of the air cleaner cover, and
remove the cover [2]. Inspect the air filter element [3]. Clean or
replace dirty air filter element. Always replace damaged air filter
element.
Reinstall the air filter element and air cleaner cover securely.
Refer to the cleaning instruction for air cleaner and filter as
following.
Cleaning (foam air filter element type)
See Figures 7, page A-3.
1. Clean the filter element in warm soapy water, rinse, and
allow to dry thoroughly. Or clean in 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.
4. Reinstall the filter element and air cleaner cover securely.
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