BTS 630, 635 9 Use and operation
Operator's manual 43
9.2 Starting up
9.2.1 Starting the engine
Performing preparations
1. Set down the machine such that the cutting blade can rotate freely.
2. Set the multifunction lever to the appropriate position.
Cold engine: Position "choke".
Warm engine: Position "I".
3. Press the fuel pump bellows repeatedly until the bellows is completely filled
with fuel.
4. Actuate the decompression valve.
If you detect resistance when pressing, move the decompression valve back
and forth a bit.
When the engine is running, the decompression valve returns to its original
position.
Item Designation
1 Fuel pump
2 Decompression valve
9 Use and operation BTS 630, 635
44 Operator's manual
Bringing the throttle lever into the start position
1. Press and hold the throttle lever lock and the throttle lever.
2. Press the lock button.
3. Release the throttle lever.
The throttle lever is locked in the half-gas position.
4. Release the lock button.
Item Designation Item Designation
1 Throttle lever lock 3 Lock button
2 Throttle lever 4
BTS 630, 635 9 Use and operation
Operator's manual 45
Starting the engine
Note: When starting the engine, move to a position at least 3 m from the fueling
area.
1. Grasp the front handle with one hand.
2. Place your foot in the rear handle to stabilize the machine.
3. Pull out the starter rope slowly until compression resistance can be felt and
then let it slowly roll back in again.
NOTICE
Improper handling can damage the machine.
f Do not pull the starter rope as far as it can go.
f Let starter rope slowly roll back in.
CAUTION
Incorrect handling during starting can result in minor injuries.
f Do not pull the starter rope until sufficient space is available and nobody is in
the immediate vicinity.
Item Designation Item Designation
1 Starter rope 3 Rear handle
2 Front handle
9 Use and operation BTS 630, 635
46 Operator's manual
4. Pull the starter rope with force, but not suddenly.
When you first hear the engine ignite, move the multifunction switch from the
"Choke" position to the "I" position.
If necessary, actuate the decompression valve once again.
5. Pull the starter rope with force, but not suddenly (several times, if necessary)
until the engine starts.
6. Let starter rope slowly roll back in.
7. Press the throttle lever to release the lock in the half-gas position.
8. Allow the engine to warm up.
BTS 630, 635 9 Use and operation
Operator's manual 47
9.3 Operating the machine
Note: When cutting, lightly pressing the cutting blade against the cutting
material produces a very pleasant vibration response as well as a
particularly narrow cut.
Holding and guiding the machine
1. Stand in a fixed position.
2. Always hold the machine with both hands, using both handles.
Setting the protective cover
f Use the adjustment handle to set the protective hood such that its lower
section is almost in contact with the workpiece.
WARNING
Injuries from insufficiently guided or uncontrolled machine.
f Always hold machine with both hands and stand firmly.
Item Designation
1 Adjustment handle
9 Use and operation BTS 630, 635
48 Operator's manual
9.4 Decommissioning
Switching off the machine
1. Release the throttle lever.
2. Set down the machine in such a way that it cannot tilt, fall or slip.
3. Set the multifunction switch to "Stop".
4. Detach the cutting blade and store in a dry place.
Item Designation
1 Multifunction switch
2 Throttle lever
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