Checking The Spark Arrester (If Equipped) - Toro Z Master Professional 6000 Series Operator's Manual

4. Remove the spark plug.
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Figure 53
5. Install the left hand hydraulic-unit shroud (Figure 52).
Checking the Spark Plug
Important: Do not 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 0.76 mm (0.03 inches).
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Figure 54
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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
(if equipped)
Service Interval: Every 50 hours
WARNING
Hot exhaust system components may ignite
gasoline vapors even after the engine is stopped.
Hot particles exhausted during engine operation
may ignite flammable materials. Fire may result in
personal injury or property damage.
Do not fuel or run engine unless spark arrester is
installed.
1. Stop engine, wait for all moving parts to stop, remove
the key, and engage the parking brake.
2. Wait for muffler to cool.
3. If there are any breaks in the screen or welds are
observed, replace the arrester.
4. If plugging of the screen is observed, remove the
arrester and shake loose particles out of the arrester,
and clean screen it with a wire brush (soak in solvent
if necessary).
5. Install arrester on exhaust outlet.
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Figure 55