Fuel System Maintenance. Toro Mid-Size ProLine Pistol Grip Hydro, 15 HP

spark plug. Use a spark plug 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® RC12YC or Champion®

Premium Gold 2071 (or equivalent)

Air Gap: 0.040 in. (1.02 mm)

Removing the Spark Plug(s)

1. Disengage the power take off (PTO), set the parking brake, and turn the ignition key to off.

Remove the key.

2. Pull the wire(s) off the spark plug(s) (Figure 40).

Now clean around the spark plug(s) to prevent dirt from falling into the engine and potentially causing damage.

3. Remove the spark plug(s) and metal washer.

1. Spark plug wire

Figure 40

2. Spark plug

Figure 41

1. Center electrode insulator 3. Air gap (not to scale)

2. Side electrode

2. Check the gap between the center and side electrodes (Figure 41). Bend the side electrode if the gap is not correct.

Installing the Spark Plug(s)

1. Install the spark plug(s) and metal washer.

Make sure the air gap is set correctly.

2. Tighten the spark plug(s) to 30 ft-lb (41 N·m).

3. Push the wire(s) onto the spark plug(s)

(Figure 40).

Fuel System

Maintenance

Servicing the Fuel Tank

Checking the Spark Plug

1. Look at the center of the spark plug(s)

(Figure 41). 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.

Important:

Never clean the spark plug(s). Always replace the spark plug(s) when it has: a black coating, worn electrodes, an oily film, or cracks.

In certain conditions, gasoline is extremely flammable and highly explosive. A fire or explosion from gasoline can burn you and others and can damage property.

• Drain gasoline from the fuel tank when the engine is cold. Do this outdoors in an open area. Wipe up any gasoline that spills.

• Never smoke when draining gasoline, and stay away from an open flame or where a spark may ignite the gasoline fumes.

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