BDR-620
The wheel drive clutch lever does not adjust travelling speed!
Never reverse with the wheel drive clutch pressed!
2.4.2.3 Machine stopping
If you wish to stop the machine, release the left handlebar lever. The machine stops moving, but the cutting disk spins. The cutting disc drive is turned
off by releasing the right handlebar lever. The cutting disc is stopped by an automatic brake. Shift the accelerator lever into 'MIN’ or ‘STOP’ position.
Always switch off the engine and wait for the cutting disk to stop before starting any activity near the machine! Always switch the
engine off before leaving the machine!
Never leave the engine running at the maximum engine speed for a long time or running idle while the clutch of the cutting blade
drive and wheel drive are turned off! The machine drive parts could be damaged (V-belt, belt pulley, clutch pulley, etc.)!
2.4.2.4 Travel speed selection
The machine drive is equipped with two speeds. The slower one (turtle) for dense, wet or high stands, the faster one (hare) for sparse, dry or low
stands.
Always adjust the travel speed to the stand type!
The speed change is made by moving the V-belt on the belt pulleys between the gearbox and the wheel axle (see Fig. 12, 13, 14 and 15). There is a
sticker with a picture showing the positions of the V-belt in the belt pulleys on the gearbox and the axle on the upper gearbox cover (see Fig. 16).
Always change the speeds when the engine is off and the accelerator lever is in the STOP position!
1. Dismount the plastic nut and the upper gearbox cover. Put the lower gearbox cover foot out of the bolt in the frame and leave it lying on a pad.
2. Put the V-belt completely out of the gearbox pulley to the right into the groove in the frame between the belt pulley and the machine frame tube.
3. Move the V-belt forward for approx. 1,5 cm and then move it into the V-belt groove in the belt pulley on the wheel axle, corresponding to the
selected speed. Check with your sight and hand whether the V-belt is correctly seated in the groove of the selected belt pulley.
4. Put the V-belt into the gearbox pulley groove, corresponding to the selected speed. Check with your sight whether the V-belt is seated straight in
correct belt pulleys corresponding to the selected speed (see Fig. 14 and 15). The V-belt can’t be crossed!
5. Mount both covers back.
2.4.3 Work with the machine
2.4.3.1 Cutting width
Always adjust the cutting width to the stand density!
It is not recommended to use the maximum cutting width (Table 3) given by the disc construction. In a terrain, the user cannot operate the cutter
straight, and precisely enough to cut the brushes in complete cutting width. We recommend to use the cutter partially (approximately 5-10 cm from the
edge of the plastic front cover) in the cut stand (as shown in Pict.4 from the user’s point of view).
2.4.3.2 Methods of stand cutting
Remove any solid parts form the stand before cutting (such as stones, wires, loose construction leftovers, etc.), as these could be thrown
away or damage the machine. If these cannot be removed, avoid them.
It is necessary to keep the lower disc sliding across the land without bouncing off when cutting in uneven terrain. Disc bouncing causes low quality
stand cutting and uneven stubble.
Let the engine and cutting disc spin in their maximum rpm, and start moving against the stand you wish to cut. The cutting disc throws cut stand onto
the right side, where it is windrowed by the side screen.
➢ Always keep the cut brush on the left side form the machine when cutting (Pict.4).
➢ When cutting on slopes it is best to move along the slope contour line. Keep the safe climbing ability (Table 3)!
In case the cut stand is too dense, inter grown, rotten, or flattened, it is necessary to adjust the machine cutting width, so that the cutting disc rpm
would not be too low, and thus causing low cutting quality.
2.4.3.2.1 Cutting problems
Be especially careful when lifting and reversing the machine!
Always turn the engine off when cleaning the space under the top cover!
Always tip the machine backwards on its handlebars only. Always be especially careful when moving in the space under a lifted
machine. Secure the cutter from spontaneous movement!
Always be especially careful when cleaning the space under the top cover. The cutting blades are sharp. Use work gloves, or other
convenient objects, e.g. a piece of branch, for cleaning the machine.
Before continuing any activity on the machine or its surroundings, always wait until the cutting disc stops.
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