MTD BM 87-35 Traduction Du Mode D'emploi Original page 15

types of bar cutting mechanism are by and large resistant to the interference of stones and similar objects, it can occasionally happen that the bars
and blades become damaged or bent. It is necessary, therefore, to check the condition of these parts each time you sharpen the cutting blade - after
4-6 hours of mowing depending on the work load.
Any damage must be made good and bent bars or blades repaired. Only well aligned bars and blades can guarantee a clean cut. At this point the
track directions of the cutting edges should also be checked and too much play in the direction be removed by means of adjustment. lmportant when
adjusting the directions of the cutting edges- adjust one direction first and then the second. After the adjustment of each single direction the blade
must be able to be freely moved to and fro by hand. Please pay attention to the following particualr instructions!!!
SHARPENlNG THE CUTTlNG BLADE (Fig. 13)
ground. In order to do this, the cutting blade is removed from the bar and cleaned. It is essential to check whether the backs and edges of the blades are
bent; if so, they must be re-aligned. Only then can sharpening begin. Suitable for this purpose is a hand grinder with about 15000 - 20000 revolutions
per minute, in conjunction with a cup-shaped grinding point with a diameter of 25 mm and a length of about 35 mm. Only the front side (face) of the
grinding point is used in grinding - in a movement from the back of the blade to the bladeís edge. Cutter bar blades need a cutting angle of 35 - 40°.
CUTTING BLADE REPLACEMENT (Fig. 16)
the blade, perform these operations backwards. Note - To achieve good cutting, blade must always be sharp.
DESCRIPTION (Fig. 15)
Cutter bar - 6) Handlebar adjusting knob.
TECHNICAL DETAILS
4.00-6 - Mass: 53 kg. Motor - Cooling: air cooling - Fuel tank: 0,75 Litre. Please consult the relative instruction manual for other technical information
and details about the engine.
NOISE AND VIBRATION LEVEL
(A). Measured sound power level with En12733, Lwa = 102 dB (A), with a uncertainty value K = ±1,4 dB (A). Handlebar vibration in compliance with
EN 12733. Level max detected = 24,8 m/s
Unscrew (1), take the blade coupling out (2) and then remove the blade. To reassemble
1) Start-Stop operating lever - 2) Drive operating lever - 3) Cutter bar clutching control lever - 4) Engine - 5)
Track: 430 mm - Length of cutter bar: 870 mm - Total length: 1350 mm - Total height: 1000 mm - Tires: 2 tires
Measured sound pressure level with En12733, Leq = 90,8 dB (A), with a uncertainty value K = ±1,2 dB
, uncertainty value K = ± 12,4 m/s
2
When the cutting blades are blunt (this will depend on work load) they must be re-
.
2
GB
9