Cleaning The Cooling System - Toro TimeCutter SW 4200 Operator's Manual

wrench for removing and installing the spark plug(s) and a
gapping tool/feeler gauge to check and adjust the air gap.
Install a new spark plug(s) if necessary.
Type: Champion RN9YC
Air gap: 0.76 mm (0.03 inch)
Removing the Spark Plug
1. Disengage the PTO and ensure the parking brake is
engaged.
2. Stop the engine, remove the key, and wait for all moving
parts to stop before leaving the operating position.
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Note: Due to the deep recess around the spark plug,
blowing out the cavity with compressed air is usually
the most effective method for cleaning. The spark plug
is most accessible when the blower housing is removed
for cleaning.
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).
A
Installing the Spark Plug
Tighten the spark plug(s) to 25–30 N-m (18.5–22.1 ft-lb).
B
Figure 40
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Figure 41
A
C
25-30 N-m
18.5-22.1 ft-lb

Cleaning the Cooling System

Clean the air-intake screen from grass and debris before each
use.
1. Disengage the blade-control switch and ensure the
parking brake is engaged.
2. Stop the engine, remove the key, and wait for all moving
parts to stop before leaving the operating position.
3. Remove the air-intake screen, the air-cleaner cover, and
the fan housing.
4. Clean debris and grass from the parts.
5. Install the air-intake screen, air-cleaner cover, and the
fan housing.
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B
D
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Figure 42