Figure 32
1.
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
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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