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MQ-MIKASA MRH800GS ROLLER — OPERATION AND PARTS MANUAL — REV. #5 (05/27/08) — PAGE 31
MRH800GS — MAINTENANCE
CLUTCH
PULLEY
VIBRATOR
PULLEY
Figure 33. V-Belt Hazard
FORWARD AND REVERSE TRAVEL ADJUSTMENT
1. If neutral position for forward and reverse travel has been
displaced, conduct the neutral adjustment.
2. If roller travels forward with the ball of ball plunger remaining
in V slot of the guide, loosen M8 bolt and slide the slide
plate slightly toward the engine. If the roller travels
backward, slide the plate towards side plate (Figure 31).
3. With M8 bolt tightened, start engine and check the neutral
for forward and reverse. If still displaced, repeat the
procedure.
4. If neutral position of forward/reverse lever has been
displaced, use the turn buckle located on the oil pump side
of forward/reverse cable.
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 32).
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.
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.
Figure 31. Adjustment of Neutral Position
Figure 32. Vibration Clutch Adjustment
Guide
Slide Plate
Plunger
M8 Bolt
Rear Nut
Front Nut
Fork
CAUTION:
NEVER attempt to check the V-belt with the en-
gine running. Severe injury can occur if your hand
gets caught between the V-belt and the clutch
(Figure 33). Always use safety gloves.
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.
CAUTION :