Changing The Engine Oil; Servicing The Spark Plug - Toro 22168 Operator's Manual

10. Dip the foam element in clean engine oil, then
squeeze out the excess oil.
Note: Excess oil in the foam element restricts
the air flow through the element and may reach
the paper filter and clog it.
11. Wipe dirt from the base and the cover with a
moist rag.
Note: Be careful to prevent dirt and debris
from entering the air duct leading to the
carburetor.
12. Install the air cleaner elements and ensure that
they are properly positioned.
13. Securely install the cover with the 2 wing bolts.

Changing the Engine Oil

Change the oil after the first 8 operating hours
and than after every 100 operating hours or
every season (more frequently in dusty or dirty
conditions).
1. Run the engine to warm the engine oil.
Note: Warm oil flows better and carries more
contaminants.
Oil may be hot after engine has been run,
and contact with hot oil can cause severe
personal injury.
Avoid contacting the hot engine oil when
you drain it.
2. Stop the engine and wait for all moving parts
to stop.
3. Disconnect the wire from the spark plug.
4. Place a suitable drain pan under the dipstick/oil
drain.
5. Remove the dipstick by rotating the cap
counterclockwise and pulling it out.
6. Tip the mower onto its right side to drain the
oil into the drain pan.
Note: You can also remove the oil from the
crankcase using an oil extractor.
7. After draining the oil, return the mower to its
operating position.
8. Fill the crankcase to the upper limit mark on
the dipstick with fresh oil. Refer to the Filling
the Crankcase with Oil.
9. Insert the dipstick into the filler neck and
rotate the cap clockwise until it is tight.
10. Wipe up any spilled oil.
11. Connect the wire to the spark plug.
12. Recycle the used oil according to local codes.

Servicing the Spark Plug

Use an NGK BPR5ES® or Nippondenso®)
W16EPR-U spark plug or equivalent.
1. Stop the engine and wait for all moving parts
to stop.
2. Disconnect the wire from the spark plug.
3. Clean around the spark plug.
4. Remove the spark plug from the cylinder head.
Important: Replace a cracked, fouled,
or dirty spark plug. Do not clean the
electrodes because grit entering the
cylinder can damage the engine.
5. Set the gap on the plug to 0.030 inch (0.76 mm)
(Figure 25).
Figure 25
1. Center electrode insulator
2. Side electrode
3. Air gap (not to scale)
6. Carefully install the spark plug by hand (to
avoid cross threading) until it is hand tight.
7. Tighten the spark plug an additional 1/2 turn
if it is new; otherwise, tighten it an additional
1/8 to 1/4 turn.
Important: A loose spark plug can
become very hot and can damage the
engine; overtightening a spark plug may
damage the threads in the cylinder head.
8. Connect the wire to the spark plug.
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