SPARK PLUG

1.Remove and clean the spark plug (Figure 26).

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 26. 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 27.

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.

Figure 27. Engine Oil (Draining)

MDR-9GH — MAINTENANCE

AIR FILTER

1.Remove the air cleaner cover and foam filter element as shown in Figure 28.

2.Tap the paper filter element (Figure 28) 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 28. Engine Air Filter

MQ-MIKASA MDR-9GH VIBRATORY ROLLER — OPERATION AND PARTS MANUAL — REV. #0 (12/17/03) — PAGE 25

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Multiquip MDR-9GH manual Spark Plug, Engine OIL Replacement, AIR Filter