Toro TITAN 74861, Руководство оператора

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Figure 40
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.
Note:
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 (0.030 inch).
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Figure 41
Installing the Spark Plug
Tighten the spark plug to 27 N-m (20 ft-lb).
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Figure 42
Cleaning the Blower
Housing
Every 100 hours/Yearly (whichever comes first)
To ensure proper cooling, make sure the grass screen,
cooling fins, and other external surfaces of the engine
are kept clean at all times.
Annually, or every 100 hours of operation (more often
under extremely dusty, dirty conditions), remove the
blower housing, and any other cooling shrouds. Clean
the cooling fins and external surfaces as necessary.
Make sure the cooling shrouds are installed.
Important:
Operating the engine with a blocked
grass screen, dirty or plugged cooling fins, and/or
cooling shrouds removed, will cause engine
damage due to overheating.
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