Servicing The Spark Plug - Toro TRX-20 Operator's Manual

2. Park the machine so that the drain side is slightly lower
than the opposite side to ensure that the oil drains
completely.
3. Lower the boom and set the parking brake.
4. Stop the engine, remove the key, and wait for all moving
parts to stop before leaving the operating position.
5. Place a pan below the drain hose. Rotate the oil drain
valve to allow oil to drain (Figure 35).
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1. Oil drain valve
6. When oil has drained completely, close the drain valve.
7. Dispose of the used oil at a recycling center
8. Slowly pour approximately 80% of the specified oil
into the filler tube (Figure 34).
9. Check the oil level; refer to Checking the Engine Oil
Level (page 16).
10. Slowly add the additional oil to bring it to the Full mark.
Changing the Oil Filter
1. Drain the oil from the engine; refer to Changing the
Oil (page 25).
2. Remove the old filter (Figure 36).
1. Oil filter
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Figure 35
2. Oil drain hose
Figure 36
2. Adapter
3. Apply a thin coat of new oil to the rubber gasket on
the replacement filter (Figure 36).
4. Install the replacement oil filter to the filter adapter,
turn the oil filter clockwise until the rubber gasket
contacts the filter adapter, then tighten the filter an
additional 3/4 turn (Figure 36).
5. Fill the crankcase with the proper type of new oil; refer
to Servicing the Engine Oil (page 25).
6. Run the engine for about 3 minutes, stop the engine,
and check for oil leaks around the oil filter and drain
valve.
7. Check the engine oil level and add oil if needed.
8. Wipe up any spilled oil.

Servicing the Spark Plug

Service Interval: Every 100 hours—Check the spark plugs.
Ensure that the air gap between the center and side electrodes
is correct before installing the spark plug. Use a spark plug
wrench for removing and installing the spark plug and a
gapping tool/feeler gauge to check and adjust the air gap.
Install a new spark plug if necessary.
Type: NGK BPR4Es or equivalent; Air Gap: 0.75 mm
(0.030 inch)
Removing the Spark Plug
1. Lower the boom and set the parking brake.
2. Stop the engine, remove the key, and wait for all moving
parts to stop before leaving the operating position.
3. Disconnect the wire from the spark plug (Figure 37).
1. Spark-plug wire/spark plug
4. Clean around the spark plug to prevent dirt from falling
into the engine and potentially causing damage.
Note: The heat shield may interfere on the right side;
remove it if necessary and replace it when finished.
5. Remove the spark plug and the metal washer.
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Figure 37
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