Engine Oil Replacement:
MRH-800DS—MAINTENANCE
CAUTION:
1.Replace engine oil in the first 25 hours of operation and every 50 to 100 hours afterwards.
2.Oil may be drained more easily when it is warm after operation (For more details, see separate engine Owner's Manual).
Air Filter
1.The air filter element should be cleaned because a clogged air cleaner can cause poor engine starting, lack of power and shorten engine life substantially.
NEVER attempt to check the
CLUTCH
PULLEY
Figure 24. Engine Air Filter and Element
2.To clean or replace air filter loosen the wing nut on the air filter housing (Figure 24) remove the cover and take out air filter cartridge. If only cleaning of the air filter is desired blow through the air filter cartridge from the inside, moving a jet of dry compressed air up and down until all dust is removed.
VIBRATION CLUTCH ADJUSTMENT
1.Move vibration lever to the OFF position.
2.Loosen the front and rear nuts at the end of vibration clutch cable (Figure 25).
3.Turn in the nut on the front side again and at the position that release fork starts to move, turn in the nut by one or two threads. Lock it a this position together with the rear nut.
Rear Nut
Fork
Front Nut
Figure 25. Vibration Clutch Adjustment
VIBRATOR
PULLEY
Figure 26. V-Belt Hazard
CAUTION :
Excessive turning of front nut may cause the sliding engagement of clutch to take place or no vibration takes place even when vibration lever is engaged.
On the other hand, insufficient turn may cause sliding engagement of clutch even when the vibration lever is placed in the OFF position or for vibration to remain engaged.
HYDRAULIC SYSTEM INSPECTION AND SERVICE
1.Check motor and pump for any damage.
2.Check hoses and pipes for proper tightness and make sure there are no leaks.
3.Check nylon tubes for hydraulic oil intake and drain. Retighten brass nut if loose and if a leak is detected. If leak continues after retightening, replace nylon tube, nut and sleeve.
4.Check oil tank for proper oil level using the hydraulic system oil level gauge (See Figure 7). Make sure hydraulic oil has not whitened or emulsified.Whitish color means aeration in pump.Retighten pipe and correct level of oil.Emulsification means water in the hydraulic oil. Replace the oil.
ROLLER INSPECTION AND ADJUSTMENT
1.Refer to Table 8 for oil and grease requirements.
2.Check oil tank level daily.
3.Check the machine for oil leak and proper function of lever, cables, and links daily.
