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MRH800DS2 VIBRATORY ROLLER • OPERATION AND PARTS MANUAL — REV. #1 (04/12/11) — PAGE 29
MAINTENANCE
AIR FILTER
1. The air fi lter element should be cleaned because a
clogged air cleaner can cause poor engine starting,
lack of power and shorten engine life substantially.
2. To clean or replace air fi lter loosen the wing nut on the
air fi lter housing (Figure 21) remove the cover and take
out air fi lter cartridge. If only cleaning of the air fi lter
is desired blow through the air fi lter cartridge from the
inside, moving a jet of dry compressed air up and down
until all dust is removed.
Figure 21. Engine Air Filter and Element
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 22).
Figure 22. Vibration Clutch Adjustment
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
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 6). Make sure
hydraulic oil has not whitened or emulsifi ed. Whitish
color means aeration in pump. Retighten pipe and
correct level of oil. Emulsifi cation 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.
CAUTION
NEVER attempt to check the V-belt
with the engine running. Severe injury
can occur if your hand gets caught
between the V-belt and the clutch.
Always use safety gloves.
CLUTCH
PULLEY
VIBRATOR
PULLEY
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, insuffi cient turn may cause sliding
engagement of clutch even when the vibration lever is
placed in the OFF position or for vibration to remain
engaged.