Spark Plug - Toro 70089 Operator's Manual

3. Place drain pan below drain plug (Fig. 11).
Remove drain cap. Allow all oil to flow into
drain pan. Reinstall drain cap after oil stops
flowing.
Note: Dispose of the used oil at a certified
recycling center.
1
Figure 11
1. Drain cap
4. Unscrew dipstick and add oil to crankcase. Refer
to Fill Crankcase With Oil, page 16. Crankcase
capacity is 48 oz. DO NOT OVERFILL or
engine damage may result.

Spark Plug

Service Interval/Specification
Since air gap between center and side electrodes of
the spark plug increases gradually during normal
operation of the engine, check condition of electrodes
after every 25 operating hours. Recommended air gap
is 0.030 of an inch (0.762 mm). Correct spark plug to
use is: Champion RJ -19LM.
Note: The spark plug usually lasts a long time;
however, the plug should be removed and checked
whenever the engine malfunctions.
Removing the Spark Plug
1. Disengage the power take off (PTO), set the
parking brake, and turn the ignition key to
"OFF" to stop the engine. Remove the key.
2. Pull the wire off the spark plug (Fig. 12).
3. Clean area around spark plug so foreign matter
cannot fall into cylinder when spark plug is
removed.
4. Remove the spark plug(s).
1
2
Figure 12
1. Spark plug wire
Checking the Spark Plug
1. Look at the center of the spark plug(s) (Fig. 13).
If you see light brown or gray on the insulator,
the engine is operating properly. A black coating
on the insulator usually means the air cleaner is
dirty.
IMPORTANT: Never clean the spark plug(s).
Always replace the spark plug(s) when it has:
a black coating, worn electrodes, an oily film,
or cracks.
2. Check the gap between the center and side
electrodes (Fig. 13). Bend the side electrode
(Fig. 13) if the gap is not correct.
Maintenance
2. Spark plug
31