Spark Plug
1.Remove and clean the spark plug (Figure 21).
2.Adjust the spark gap to 0.028 ~0.031 inch (0.6~0.7 mm).This unit has electronic ignition, which requires no adjustments.
Figure 21. Spark Plug Gap
Engine Oil Replacement
1.Replace engine oil, first in 25 hours of operation and every 50 to 100 hours afterwards.
2.Drain the engine oil when the oil is warm as shown in Figure 22.
3.Remove the oil drain bolt and sealing washer and allow the oil to drain into a suitable container.
4.Replace engine oil with recommended type oil as listed in Table 3. Engine oil capacity is 1.16 quarts (1.1 liters). DO NOT overfill.
5.Install drain bolt with sealing washer and tighten se- curely.
MVH-402GHB — MAINTENANCE
Air Filter
1.Remove the air cleaner cover and foam filter element as shown in Figure 23.
2.Tap the paper filter element (Figure 23) several times on a hard surface to remove dirt, or blow compressed air [not exceeding 30 psi (207 kPa, 2.1 kgf/cm2)] through the filter elementfromtheaircleanercaseside.NEVER brushoffdirt. Brushingwillforcedirtintothefibers.Replacethepaperfilter element if it is excessively dirty.
3.Clean foam element in warm, soapy water or nonflammable solvent. Rinse and dry thoroughly. Dip the element in clean engineoilandcompletelysqueezeouttheexcessoilfromthe element before installing.
Figure 23. Engine Air Filter
CAUTION :
NEVER attempt to check the
CLUTCH
PULLEY
Figure 22. Engine Oil (Draining)
VIBRATOR
PULLEY
