Cleaning The Cooling System - Toro 74760 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 0.76 mm (0.030 inch).
Figure 37
Installing the Spark Plug
Tighten the spark plug(s) to 25–30 N-m (18.5–22.1
ft-lb).
Figure 38
Cleaning the Cooling
System
Clean the air intake screen from grass and debris
before each use.
1. Disengage the blade-control switch and apply
the parking brake.
2. Stop the engine, remove the key, and wait
for all moving parts to stop before leaving the
operating position.
3. Remove the air filter from the engine.
4. Remove the engine shroud.
5. To prevent debris entering the air intake, install
the air filter to the filter base.
6. Clean debris and grass from the parts.
7. Remove the air filter and install the engine
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shroud.
8. Install the air filter.
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