Hayter Mowers RT380H - Manual (Page 28)

Figure 32
1. Spark-plug wire
6. Clean around the spark plug to prevent dirt from
falling into the engine and potentially causing
damage.
7. Remove the spark plug and metal washer.
Checking the Spark Plug
1. Look at the center of the spark plug (Figure 33).
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.
Figure 33
1. Center electrode insulator 3. Air gap (not to scale)
2. Side electrode
Important: Never clean the spark plug. Always
replace the spark plug when it has a black
coating, worn electrodes, an oily film, or cracks.
2. Check the gap between the center and side electrodes
(Figure 33). Bend the side electrode if the gap is not
correct.
Installing the Spark Plug
1. Install the spark plug and metal washer.
Note: Ensure that the air gap is set correctly.
2. Tighten the spark plug to 15 ft-lb (20 N⋅m).
3. Connect the wire to the spark plug (Figure 32).
4. Close the hood.
Fuel System
Maintenance
Draining the Fuel Tank
Service Interval: Before storage
In certain conditions, petrol is extremely
flammable and highly explosive. A fire or
explosion from petrol can burn you and others
and can damage property.
• Drain petrol from the fuel tank when the
engine is cold. Do this outdoors in an open
area. Wipe up any petrol that spills.
• Never smoke when draining petrol, and stay
away from an open flame or where a spark
may ignite the petrol fumes.
1. Park the tractor so that the left front side is slightly
lower than the right side to ensure that the fuel tank
drains completely.
2. Disengage the blade control (PTO).
3. Set the parking brake.
4. Stop the engine, wait for all moving parts to stop, and
remove the key before leaving the operating position.
5. Open the hood and locate the fuel filter (Figure 34).
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