Checking The Spark Arrester (If Equipped) - Toro 74534 Operator's Manual

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 0.75 mm (0.03 inch).
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Figure 47
Installing the Spark Plug
Tighten the spark plug(s) to 22 N-m (16 ft-lb).
Figure 48
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G008794
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 refuel or run the engine unless the spark
arrester is installed.
1. Stop the engine, wait for all moving parts to stop,
engage the parking brake, and remove the key.
2. Wait for the muffler to cool.
3. If any breaks in the screen or welds are observed,
replace the arrester.
4. If plugging of the screen is observed, remove the
arrester, shake loose particles out of the arrester, and
clean the screen with a wire brush (soak in solvent if
necessary).
5. Install arrester on exhaust outlet.
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