Vari BDR-620, Руководство пользователя, Страница: 18 / 59

2.3.2 Description of the machine and its parts
Drum mower BDR-620 , BDR-620B ( Pict.2 ) is built on a steel frame, to which all important parts of the machine are attached. All controls (1,2 and 4) are
placed on the handlebars. Handlebars are attached to the frame with a bolted connection (3) and their height is adjustable into 3 positions. Handles (12) secure a
firm grip and machine handling during work. On the left side of the handlebars, there is the wheel drive clutch lever (2) which controls the movement of the
machine in forward direction. On the right side, there is lever (1) of the disc drive clutch for turning the cutting disk drive on (off). Both control levers return to
their original position when the handlebars are released in a critical situation and disconnect the engine power transfer. The cutting disk is equipped with an
automatic brake 45 which stops the disk. Engine speed is controlled with an accelerator lever (4). The wheel drive is controlled by worm-gear unit with a belt
clutch which provides fluent power transfer onto the wheels (15) (the machine does not start with a jump). The gearbox and clutch are covered by a plastic
gearbox cover (16). There is the cutting disk (7) with four steel blades (8) in the front part. The attendant is protected against flying parts of the cut stand by
plastic cover (10 and 9). A detachable side screen (6), which is attached with a bolted connection (5), controls the line spacing.
2.4 User guide
2.4.1 Assembling the machine
 As part of the pre-sale servicing, ask your dealer to unwrap the machine and give you a brief training on how to use it!
Places for holding the cutter while removing it from the box (see Pict.1 ): by the cutting disc in the front (4), by the machine frame tube in the back (1).
 Never attempt to lift the assembled machine by its front plastic cover. The cover will not support the machine’s weight.
2.4.1.1 Assembling procedure
Use the following procedure for assembling the machine: (It is advised to assemble the machine with a second person’s assistance)
1) According Pict.1 - take the disc cover (3), bag (6) and a side screen (2) out of the box. Pick the machine up by its lift points in front (4) and
back (1) and take it out of the box.
2) According Pict.2 - dismount the bolted connection (3) on both sides of the frame, take off the handlebars, turn them around and put them on the
frame as shown in the picture (choose one of the 3 holes in the handlebars to set their height). Re-tighten the bolted connection firmly with your hand.
Control lever cables must not be crossed - this shortens their lifetime !
3) Take the draw bands out of the bag and tighten brake cables to the handlebars where the upper bending of the handlebars tube ends. Two pieces of
draw bands are sufficient for cable tightening.
4) Dismount the self-locking nuts 46 M5 (2 pieces) and washers, mounted by the manufacturer, off the frame and set the disc cover on the machine so
that the holes fit in the screws in the frame, and the narrowed part of the cover is pushed in under the engine plate. Put the washers and self-locking nuts
M5 back on the screws and tighten them.
5) According Pict.1 -put the rear (shorter) screen (7) on the shorter arm of the screen holder (2). Put the side (longer) screen (7) on the longer arm of
the screen holder (2). Put the clamp bands (2 pcs) through the holes in the screen holder and draw both bands to fix both screens.
6) According Pict.2 - unscrew the fastening bolt (5) so that the side gate (2) can be easily pushed into the frame opening. Tighten the fastening bolt
with your hand and check that the side gate does not fall out spontaneously.
2.4.2 Putting into operation
 The cutter may be delivered without the engine operating fluids (according to various national rules)!
 First read the engine user manual 47 carefully! This way, you may avoid possible damage.
1. Check the engine oil level; fill the engine with prescribed type and amount of oil if necessary. Fill the tank with prescribed amount and type of petrol.
2. Shift the accelerator lever into ‘ CHOKE ’ position. The accelerator lever positions are described in picture Pict.3 . All four described main positions are
locked by a simple stamp-projection system in the lever body.
3. Start the engine by pulling the rope of the recoil starter 48 .
4. First let the new or cold engine run for about 30 sec with a choke (accelerator lever in ‘ CHOKE ’ position) and then shift the accelerator lever into
‘ MAX ’ position. Let the engine run in this position for about 30 sec.
 Do not go away from the machine!

When starting the engine, both control levers (1 and 2 in Pict.2) must be in the position turned off (they must not be pushed to the handlebars)!
2.4.2.1 Starting up the cutting disc

Make sure that all persons, animals and children are at a safe distance from the machine! If they are not, do not continue in your activity!
1. Start the engine 49 .
2. Use the accelerator lever to set the maximum engine speed. (In case the engine is cold, warm it up at maximum speed for about 1 minute)
3. Take hold of the handlebars handle with your left hand. With your right hand then slowly push the lever (1 in Pict.2 ) on the right handle.
 Slowly press the lever up to about two thirds throttle, to start up the cutting disc and prevent the engine form turning off.
4. After starting up the cutting disc, press the lever to the handle and hold firmly.
 The cutting disc start-up is accompanied by V-belt creeping and its side effects (chattering, whistling). These effects usually disappear
when the V-belt is run-in.
Note:
During the first starts of the cutting disc, a new or cold engine might stall. This tendency disappears after warming up the engine. In case the cutting disc drive
cannot be runned up, check if there is a defect according to Table 7 .
45 The automatic break is an active protective feature that supports the machine’s safety.
46 Using wrench (preferably tubular wrench) n.8
47 Multilingual manual and its Czech translation are part of the cutter..
48 Engine starting instructions are described in detail in engine user manual.
49 Engine starting instructions are described in detail in engine user manual.
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