• Always use original accessories and spare parts.
Accessories and spare parts that are not approved
by the manufacturer, can cause serious injury or
death.
• Replace damaged, worn or broken parts.
• Only do the maintenance as given in this operator's
manual. Let an approved service center do all other
servicing.
• Remove all tools from the product before you start
the engine after maintenance. Loose tools or tools
attached to rotating parts can eject and cause injury.
• After maintenance, do a check of the vibration level
in the product. If it is not correct, speak to an
approved service center.
• Let an approved service center do servicing on the
product regularly.
Assembly
Introduction
WARNING: Read and understand the safety
chapter before you assemble the product.
To adjust the centrifugal force (BE 20)
WARNING: Disconnect the power source
before you adjust the centrifugal force.
1. Remove the screws from the covers for the eccentric
weights. There is 1 cover on each side of the drive
unit.
2. Remove the covers for the eccentric weights.
3. Remove the nuts that hold the eccentric weights.
The available positions are identified in the table and
on the covers.
4. Turn the eccentric weights 180° to adjust the
centrifugal force.
CAUTION: Do the same adjustment at
each end of the drive unit.
5. Attach the eccentric weights.
6. Install the covers. Make sure that the cover seals are
in good condition.
Note: The centrifugal force is set at position 4 at the
factory.
5
4
3
2
1
Number
of
weights
1
2
3
4
5
Centrifu-
gal
force, N
920
1850
2770
3690
4620
To adjust the centrifugal force (BE 30)
WARNING: To prevent accidental start, stop
the engine and remove the spark plug cap
before you adjust the centrifugal force.
1. Remove the cap.
C
B
A
2. Loosen the screws that hold the eccentric weights
(A) and (B).
3. Turn the eccentric weights (A) and (B) 180° to adjust
the centrifugal force.
4. Tighten the screws that hold the eccentric weights
(A) and (B).
5. Install the cap. Make sure that the O-rings are
installed correctly.
Weights
C
A+C
B+C
A+B+C
Centrifugal
force, N
@3600
min
-1
1920
2140
2400
2620
To install the drive unit on the beam
(BE 20)
It is recommended to adjust the centrifugal force before
you install the drive unit on the beam. Refer to
the centrifugal force (BE 20) on page 8
.
1. Put the beam on level ground.
2. Put the drive unit at the center of the beam.
8
1299 - 001 - 14.04.2020