Greasing The Traction Unit; Changing The Fuel Filter - Toro TX 420 Operator's Manual

Installing the Spark Plug
1. Thread the spark plugs into the spark plug holes.
2. Tighten the spark plugs to 20 ft-lb (27 N.m).
3. Push the wires onto the spark plugs (Fig. 41).
4. Close the hood.

Greasing the Traction Unit

Grease all pivot joints every 8 operating hours and
immediately after every washing.
Grease Type: General-purpose grease.
1. Lower the loader arms and stop the engine. Remove
the key.
2. Clean the grease fittings with a rag.
3. Connect a grease gun to each fitting (Fig 43 and 44).
m-4732
Figure 43
Figure 44
4. Pump grease into the fittings until grease begins to
ooze out of the bearings (approximately 3 pumps).
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m–4056
34
5. Wipe up any excess grease.

Changing the Fuel Filter

Change the fuel filter after every 200 operating hours or
yearly, whichever occurs first.
1. Lower the loader arms, stop the engine, and remove
the key.
2. Open the hood and remove the left side screen; refer to
Accessing the Engine and Internal Components, page
24.
3. Loosen the tank cap to relieve pressure.
4. Clamp the fuel lines on both sides of the fuel filter
(Fig. 45).
5. Squeeze the ends of the hose clamps together and slide
them away from the filter (Fig. 45).
2
Figure 45
1. Filter
6. Place a drain pan under the fuel lines to catch any
leaks, then remove the filter from the fuel lines.
7. Slide the fuel lines on the new fuel filter fittings,
ensuring that the arrow on the filter points away from
the fuel line coming from the fuel tank and toward the
line going to the fuel pump.
Important
Never install a dirty filter.
8. Move the hose clamps close to the filter.
9. Remove the clamp blocking fuel flow and open the
fuel valves.
10. Secure the tank cap.
11. Replace the side screen and close the hood.
1
m–7673
2. Hose clamp