HONDA metro 21 - Manual (Page 36)

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0.030 in. (0.76 mm)
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.
4.13 Changing the Engine Oil:
Service Interval: Change the oil after the first 5 operating hours (or the first month)
Then after every 50 operating hours (or every 6 months)
1. Run the engine to warm the engine oil.
NOTE: Warm oil flows better and carries more contaminates.
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 contacting the hot engine oil when
you drain it.
2. Stop the engine and wait for all moving parts to stop.
3. Disconnect the wire from the spark plug (Fig 5 & 7).
4. Place a suitable drain pan under the dipstick/oil drain.
5. Clean around the dipstick.
6. Remove the dipstick by rotating the cap counterclockwise and pulling it out.
7. Raise the left side of the lawn mower to drain the oil form the dipstick fill tube into
the drain pan.
8. After draining the oil, return the lawn mower to the operating position.
9. Fill the crankcase with fresh oil to the upper limit mark on the dipstick.
10. Insert the dipstick into the filler neck and rotate the cap clockwise until it is tight.
11. Wipe up any spilled oil.
12. Connect the wire to the spark plug.
13. Recycle the used oil according to local codes.
4.14 Changing the Oil Filter (Kawasaki Units Only):
Service Interval: Replace the oil filter after every 100 operating hours.
Figure 27