10
viewed from the bottom of the mower.
■ Remove the disc bolt, lock washer, flat washer, and
disc.
■ If any of the individual blades are dull, damaged, or
need replacing, they should be replaced using only
original equipment parts. If any single blade needs to
be replaced then the complete set of four (4) need to
be replaced as a set. Failure to replace the blades as
a set may result in an out of balance situation resulting
in damage to the engine.
■ Loosen the lock nuts on the old blades by turning then
counter clockwise.
■ Remove the nuts, washers, blades, wave washers and
bolts from the disc.
■ Reassemble the new blades as shown on the figure
page. Ensure the new blades raised edges face
towards the inside of the mower deck once the disk
is reinstalled to the mower. If the blades are not
assembled correctly the grass will not get directed to
the rear of the deck (for being caught in the catcher).
Ensure the wave washer is positioned between the
blade and the disc. Ensure the lock nuts are tightened
(clockwise) over the flat washer and disc properly
securing the blade to the disc.
■ Assemble the disc flat washer, lock washer, and blade
bolt on the shaft. Finger tighten the bolt by turning in a
clockwise direction as viewed from the bottom of the
mower. (See figure 12.)
NOTE:
Make certain all parts are replaced in the exact
order in which they were removed.
■ Torque the disc bolt using a torque wrench
(not provided) to ensure the bolt is properly tightened.
The recommended torque for the disc bolt is
48–55 Nm (35–40 ft. lb.).
NOTE:
It is not recommended to perform blade
sharpening by user.
REPLACING WHEELS
See figure 16.
■ Stop the engine and disconnect the spark plug wire.
Allow the blade to come to a complete stop.
■ Remove spat (hub cap).
■ Remove the nut from the wheel axle, then remove the
wheel.
■ Assemble with new wheel and reinstall nut to secure.
■ Assemble spat (hub cap).
CLEANING AIR FILTER
See figure 14.
The mower has a paper air filter, and it cannot be washed.
■ Remove the air filter element cover by pushing in on
the latch with your thumb while gently pulling on the
cover.
■ Remove the paper air filter element for inspection.
■ After removing the air filter element, most debris can
be removed by tapping it gently against a hard surface,
or brushing the surface lightly.
NOTE:
A dirty air filter element will restrict air flow and
may result in damage to the engine. Air filter element
life is dependant upon the environment in which the
mower is used, and it should be inspected & cleaned
regularly and replaced when dirty.
Replacement air filter elements can be ordered through
the Bunnings special orders desk: - 17150Z03011000.
(Ryobi part number for Australia and New Zealand)
■ Reinstall the cleaned or new air filter element into the
air filter base.
■ Replace and secure the air filter element cover.
NOTE:
The filter element should be replaced annually
for best performance or sooner, if necessary.
■ Replacement air filter elements can be purchased
from Ryobi through your local Bunnings Special
Orders desk.
FUEL CAP
WARNING
A leaking fuel cap is a fire hazard and must be replaced
immediately.
The fuel cap contains a non-serviceable filter and a
check valve. A clogged fuel cap will cause poor engine
performance. If performance improves when the fuel
cap is loosened, check valve may be faulty or clogged.
Replace the fuel cap if required.
CHANGING ENGINE OIL
See figure 15.
Engine oil should be changed after every 25 hours of use.
Change the oil while the engine oil is still warm, but not
hot. This allows the oil to drain quickly and completely.
NOTE:
Ensure the fuel tank is completely empty before
tipping the unit over otherwise fuel will leak out.
■ Remove the oil fill cap/dipstick.
■ Tip mower onto its side and allow oil to drain from the
oil fill hole into an approved container.
■ Place mower upright and refill with oil following the
instructions in the
Adding/Checking Oil
section.
NOTE:
Used oil should be disposed of at an approved
disposal site. See your local oil retailer for more
information.
