Multiquip Whiteman Plaster/Mortar Mixers WM-120PM - Manual (Page 19)

WHITEMAN WM-120P/S — PARTS & OPERATION MANUAL — REV. #6 (07/20/05) — PAGE 19
WM-120P/S — MAINTENANCE
Clutch Adjustment Mechanical 12 CF Mixer
If the rotating mixing paddles appear to be losing rotational speed,
it may be necessary to adjust the clutch. For optimum
performance Multiquip recommends 35-55 lbs. applied pressure
to the hand clutch lever. After the first initial operating hours (8)
check the clutch for proper ensasment pressure.
Clutch Adjustment Procedure
CAUTION:
Always stop the engine, disconnect the spark
plug or electrical power cord before attempting
this procedure.
1. To gain access to the " Gear Reduction Compartment"
remove the four 9/16-inch hex head bolts that secure the
hood to the engine and remove engine hood.
2. Drain the clutch compartment oil by removing the magnetic
3/8 plug located at the bottom of the Gear Reduction
Assembly.
3. To gain access to the " clutch Inspection door " remove
the six 1/2-inch capscrews and lockwashers that secure
the clutch inspection door. Remove door and gasket.
4. Check that the clutch is disengaged by pulling the shifter
lever towards the rear of the mixer.
5. Refer to Figure 12 for steps 5A through 5G:
NOTE
The Gear Reduction Compartment consist of two
compartments, a lower and upper.The
lower
compartment houses the clutch, the uppe r
compartment contains the actual gear reduction.
Remember each compartment requires a different type
of lubricating oil.
NOTE
If the clutch cannot be adjusted, it may be necessary to
inspect or replace the clutch.
C. When the clutch has been satisfactorly adjusted reinstall
the adjustment lock P/N EM 934040 and tighten lock bolt.
D. Reinstall the clutch Inspection door using the six 1/2-
inch capscrews and lockwashers, and also check that the
gasket is not worn or broken.
E. When the clutch has been satisfactorly adjusted reinstall
the adjustment lock P/N EM 934040 and tighten lock bolt.
F. Remove the 3/8-inch square head pipe plug located on
the lower clutch compartment. Refill the clutch
compartment with 2 1/4 quarts of SAE 30 motor oil to the
level of the plug. When done reinstall plug.
G. Reinstall spark plug wire or electric power cord. Start
engine, check for proper clutch engagement and inspect
for any oil leaks.
Figure 12. Clutch Adjustment Lock Location
NOTE
Any questions regarding the above procedure please
contact the Multiquip Service Dept. at 1-800 421-1244.
A. Rotate the clutch using the recoil starter until the
adjustment lock (Figure 12) P/N EM934040 is visible.
Using a flat blade screwdriver loosen the adjustment bolt
just enough to release the adjustment lock.
B. Using a punch, rotate the adjusting ring P/N EM 934045
one notch at a time in the counter-clockwise direction until
a firm 35 to 55 lbs. pressure is felt when engaging the
clutch lever (the lever should snap into the engaged
position).