Checking The Spark Arrester - Toro Z Master Professional 6000 Series Operator's Manual

5. Install the left hydraulic-unit shroud
Checking the Spark Plug
(Figure 58).
Important:
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 0.76 mm (0.03 inch).
Installing the Spark Plug
Tighten the spark plug(s) to 24.4 to 29.8 N∙m (18 to
22 ft-lb).
Checking the Spark
Arrester
For Models with a Spark Arrester
Service Interval: Every 50 hours
46
Do not clean the spark plug(s).
Figure 60
Figure 61
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