MBW MK8 90 - Manual (Page 11)

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Replacing The Belts
1. Changing the belts will be easier if the trowel blades
are off the ground. This can be done by lifting the
machine up and putting blocks under the guard ring
to stabilize the unit.
2. Loosen belt tensioner jam nut located by engine oil
filter.
3. Back out belt tensoiner bolt 1 to 2 inches.
4. Idler bracket should slide back and belts should be
loose. If not tap idler bracket back.
5. Remove belts by rolling them off the input sheave one
at a time.
Installing new belts
1. Install the replacement belts onto the clutch one at a
time and roll them into there respective groove on the
input sheave. Repeat this process for the remaining
two belts.
2. Tighten tensioner bolt against idler bracket until belts
have approximately ¼ to ½" deflection with moderate
pressure applied to the back side of belts.
3. Tighten jam nut.
4. After unit is run belt tension should be rechecked and
readjusted as needed.
Replacing The Floats
CAUTION
Be careful when installing the floats: one rotor
turns clockwise and the other counterclockwise,
therefore you need to check that the various com-
ponents have been properly arranged.
1. Before mounting the floats, check that the blades are
clean. The blades must be placed in horizontal
position using the pitch control.
2. Slightly lift the float machine off the ground (about 4”).
3. Mount the floats on the blades checking the correct
direction of rotation.
4. When the floats have been mounted, reposition the
float machine on the ground.