Servicing The Spark Plug - Toro Z master G3 Operator's Manual

Servicing the Spark Plug

Service Interval: Every 100 hours
Make sure the air gap between the center and side
electrodes is correct before installing the spark plug.
Use a spark plug wrench for removing and installing
the spark plug(s) and a gapping tool/feeler gauge to
check and adjust the air gap. Install a new spark plug(s)
if necessary.
Type of Spark Plug: NGK
Air Gap: 0.030 inch (0.75 mm)
Removing the Spark Plug
1. Stop the engine, remove the key, and wait for all
moving parts to stop before leaving the operating
position.
2. Disengage the PTO, move the motion control levers
to the neutral locked position and set the parking
brake.
3. Locate and remove the spark plugs (Figure 50).
Checking the Spark Plug
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.
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.
Set the gap to 0.030 inches (0.76 mm).
® BPR4ES or equivalent
g015124
Figure 50
1
Installing the Spark Plug
Tighten the spark plug(s) to 16 ft.-lb (22 N-m).
37
2
G008794
Figure 51
Figure 52