Table of Contents
Advertisement
Servicing the Spark Plug
Service Interval: Every 100 hours—Check the spark
plug.
Use an NGK BPR5ES spark plug or equivalent.
1. Stop the engine and wait for all moving parts to stop.
2. Disconnect the wire from the spark plug (Figure 12).
3. Clean around the spark plug.
4. Remove the spark plug from the cylinder head.
Important: Replace a cracked, fouled, or
dirty spark plug. Do not clean the electrodes
because grit entering the cylinder can damage
the engine.
5. Set the gap on the plug to 0.030 in. (0.76 mm)
(Figure 24).
Figure 24
1. Center electrode insulator
2. Side electrode
3. Air gap (not to scale)
6. Install the spark plug and the gasket seal.
7. Torque the plug to 17 ft-lb (23 N⋅m).
8. Connect the wire to the spark plug.
Fuel System
Maintenance
Emptying the Fuel Tank and
Cleaning the Fuel Filter
Service Interval: Every 50 hours—Check the fuel hose
and replace it if necessary.
Every 100 hours—Clean the fuel
filter.
Yearly or before storage—Empty the
fuel tank.
The fuel filter (screen) element is located inside the fuel
tank.
1. Stop the engine and wait for it to cool down.
Important: Drain gasoline from a cold engine
only.
2. Disconnect the wire from the spark plug (Figure 12).
3. Disconnect the fuel line by loosening the tube clamp
at the carburetor.
4. Drain the gasoline completely from the tank and fuel
line into an approved fuel container.
5. Remove the fuel tank from the mower.
6. Pour a small amount of fuel in the fuel tank, move
the fuel around in the tank, and pour it out into an
approved fuel container.
7. Install the fuel tank and fuel line; refer to Installing
the Fuel Tank and the Fuel Line.
20
Advertisement
Table of Contents
