Oil Filter; Spark Plug - Exmark Metro 21 Operator's Manual

2
Figure 19
1. Side oil drain plug
9. Fill the crankcase to the FULL line on the dipstick
with fresh oil. Refer to the Oil section, page 6, for
specifications.
10. Wipe up any spilled oil.

Oil Filter

Change the oil filter every 200 hours of operation.
1. Run the engine to warm the oil.
WARNING
POTENTIAL HAZARD
Oil may be hot after engine has been run.
WHAT CAN HAPPEN
Contact with hot oil can cause severe personal
injury.
HOW TO AVOID THE HAZARD
Avoid contact with oil while draining oil.
2. Stop the engine and pull the wire off of the spark plug
(Fig. 6).
3. Drain the engine oil as specified in Engine Oil section,
page 14.
4. Place a suitable drain pan under the oil filter
connection (Fig. 20).
5. Rotate the oil filter counterclockwise to remove it.
6. Coat a film of clean engine oil onto seal of new filter.
7. Install new filter by rotating it clockwise until seal
contacts mounting surface. Then rotate filter 3/4 turn
more by hand.
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m-4354
2. Oil drain tube
1. Oil filter
8. Fill the crankcase to the FULL line on the dipstick
with fresh oil. Refer to the Oil section, page 6, for
specifications.
9. Reinstall the spark plug wire.
10. Run the engine for about 3 minutes. Stop engine and
check oil leakage around the filter.
11. Add oil to compensate for oil level reduction due to oil
filter capacity. Refer to the Oil section, page 6, for oil
level check.

Spark Plug

Use an NGK BPR5ES spark plug or equivalent. The
correct air gap is 0.030" (0.76 mm). Remove the plug
after every 100 operating hours and check its condition.
1. Stop the engine and pull the wire off the spark plug
(Fig. 6).
2. Clean around the spark plug and remove it from the
cylinder head.
IMPORTANT: Replace a cracked, fouled, or dirty
spark plug. Do not clean the electrodes because engine
damage could result from grit entering the cylinder.
3. Set the gap on the new plug to 0.030" (0.76 mm)
(Fig. 21).
.030 in.
(.76 mm)
15
2
1
Figure 20
2. Mounting surface
Figure 21
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