To Next PageTo Next Page
Need help?Do you have a question about the EMAK BCH 500 S and is the answer not in the manual?
This document serves as the operator's instruction book for the BCH 500 - DSH 5000 series brushcutters, manufactured by Emak S.p.A. It provides comprehensive information on the device's function, technical specifications, usage, and maintenance.
The BCH 500 - DSH 5000 brushcutter is designed and constructed exclusively for cutting grass and non-woody vegetation using a strimmer head with a nylon line, and for cutting tall grasses, twigs, and reeds with the aid of discs. It is intended for use by a single operator. Improper uses, such as sweeping by tilting the strimmer head, trimming hedges above ground level, pruning trees, cutting non-vegetable materials, or using non-recommended cutting devices, are strictly prohibited. The machine's ignition system produces a very low-intensity electromagnetic field, which may interfere with pacemakers. Individuals with pacemakers should consult their doctor and pacemaker manufacturer before use.
The BCH 500 - DSH 5000 series brushcutters are powered by a 2-stroke EMAK engine with a displacement of 50.9 cm³. The engine delivers a power output of 2.1 kW. The minimum engine speed is 3000 rpm, while the maximum output shaft speed is 8500 rpm, and the engine speed at maximum output shaft speed is 10400 rpm. The fuel tank capacity is 1100 cm³ (1.1 l). Both models feature a carburettor primer and quick start-up functionality. The cutting width is 41 cm. The weight of the BCH 500 S - DSH 5000 S model without cutting tool and guard is 7.9 kg, while the BCH 500 T - DSH 5000 T model weighs 8.3 kg.
The machine's noise emissions include a sound pressure level (LpA av) of 101.5 dB(A) for the BCH 500 S - DSH 5000 S and 102.7 dB(A) for the BCH 500 T - DSH 5000 T, with an uncertainty of 1.0-1.5 dB(A). The measured sound power level is 115 dB(A) for the BCH 500 S - DSH 5000 S and 114 dB(A) for the BCH 500 T - DSH 5000 T, with an uncertainty of 1.2 dB(A). The guaranteed sound power level (LWA) is 116 dB(A) for the BCH 500 S - DSH 5000 S and 115 dB(A) for the BCH 500 T - DSH 5000 T. Vibration levels (m/s²) for the BCH 500 S - DSH 5000 S are 5.3 (left) and 4.8 (right), and for the BCH 500 T - DSH 5000 T are 7.0 (left) and 5.7 (right), with an uncertainty of 1.2-1.6 m/s². These values are weighted averages at 1/2 minimum, 1/2 full load (head), or 1/2 max speed no load (disc).
Recommended cutting devices include various strimmer heads and grass cutting blades with diameters ranging from 130 mm to 305 mm, each with specific part numbers. The use of cutting devices other than those recommended can lead to serious or fatal injury.
Assembly: The safety guard (Fig. 4.A) must be fixed to the transmission pipe in a safe working position. For the strimmer head, only the guard (Fig. 4.C) should be used, secured with a screw (Fig. 4.D). When assembling the strimmer head (Fig. 6), the upper flange (Fig. 6.F) is inserted, the retaining pin (Fig. 6.H) is placed in the designated hole (Fig. 6.L), and the head (Fig. 6.N) is hand-tightened anti-clockwise. For disc assembly (Fig. 7), the disc (Fig. 7.R) is fitted onto the upper flange (Fig. 7.F) with correct rotation, followed by the lower flange (Fig. 7.B), bevel gear (Fig. 7.D), and bolt (Fig. 7.A) tightened anti-clockwise to 25 Nm (2.5 kgm) using the supplied pin (Fig. 7.L). The grip (Fig. 2) and handle (Fig. 5B, 5C) are also assembled and tightened securely.
Refuelling: The machine uses a pre-mixed fuel of petrol and 2-stroke engine oil (2% or 1:50 ratio). Only use petrol with an octane rating of 90 RON or higher and high-quality 2-stroke engine oil (JASO FD or ISO L-EGD). Fuel should be mixed outdoors, away from sparks and open flames, and stored in an airtight container in a cool, dry place. Before refuelling, stop the engine and allow it to cool. Clean around the fuel cap (Fig. 1.7) to prevent contamination, then slowly loosen the cap to release pressure before carefully pouring in the fuel mixture.
Start-up: Before starting, ensure the cutting device is free to rotate, the accelerator lever moves freely, and there are no fuel leaks. Push the primer bulb (Fig. 1.8) 4 times, set the starter lever to CLOSE (Fig. 12.A), pull the accelerator lever (Fig. 1.17) and lock it in the half-acceleration position (Fig. 1.21). With one hand holding the machine (Fig. 13), pull the starter cable (no more than 3 times) until the engine fires. Once started, let the engine warm up for a few seconds without touching the accelerator. For cold starts or high altitudes, more warm-up time may be needed.
Operation: Always operate with both feet on stable ground. Do not cut above chest level or near electrical cables. Stop the engine if the disc hits a foreign object. Keep the disc away from soil and sand. When cutting grass with the strimmer head, hold it slightly above the ground, allowing the line to work at its own pace. For thinning, tilt the head and let the line hit the ground around obstacles. When cutting with a grass disc, keep the disc parallel to the ground. Always operate at full throttle when starting to cut with the disc.
Regular Checks: Before each use, perform safety checks: ensure handles are clean and secure, the cutting device guard is properly attached and undamaged, the harness attachment point (Fig. 1.18) is correct, all screws are tight, the cutting device is clean and sharp, cooling air passages are clear, and the accelerator levers move freely and return to neutral. Perform a test run to check for abnormal vibrations or sounds.
Fuel System: The fuel filter (Fig. 18) should be checked periodically and replaced if excessively dirty. The air filter (Fig. 20.B) should be cleaned every 8-10 operating hours by removing the cover (Fig. 20.A), blowing compressed air from the inside out, and replacing if dirty or damaged.
Engine: Periodically clean the cylinder fins with a brush or compressed air to prevent overheating. The spark plug (Fig. 19) should be cleaned periodically, and the electrode gap checked. Use a TORCH L8RTF spark plug or equivalent.
Lubrication: The bevel gear (Fig. 6.D) should have its grease level checked every 30 operating hours, using no more than 10 g of molybdenum disulphide grease. The connection shank of the rigid tube (Fig. 21.D) should also be greased every 30 operating hours with molybdenum disulphide grease.
Cutting Devices: Grass cutting blades (Fig. 14) should be sharpened with a flat file. Ensure all cutting edges are filed evenly to maintain balance. Replace damaged or cracked blades. The nylon line in the TAP&GO head (Fig. 16) should be replaced by pressing the tab (Fig. 16.1), removing the cover and spool, folding the line, locking it in the notch (Fig. 16.2), winding it evenly, securing it in the slots (Fig. 16.3), fitting the spring, passing the line through the eyelets (Fig. 16.4), locking the head with the cover (Fig. 16.5), and pulling the line outwards (Fig. 16.6).
Carburettor and Silencer: Carburettor adjustments should be performed by an authorized dealer or workshop after cleaning the air filter and warming up the engine. The idle speed screw (Fig. 17.T) is set to ensure a safe margin between idle speed and clutch engagement. The silencer should be replaced if damaged or frequently clogged, as this may indicate reduced catalytic converter performance.
Storage: For long-term storage, empty and clean the fuel tank in a well-ventilated area. Run the engine until it stops to empty the carburettor. Clean the machine thoroughly, lubricate metal parts, and remove/oil the disc and bevel gear seat to prevent rust. Clean cooling slots and the air filter. Store in a dry place, off the ground, and away from heat sources. If a metal disc is fitted, the disc guard must also be installed.
Extraordinary Maintenance: A general inspection by a specialized technician is recommended at the end of the season for intensive use, or every two years for normal use. All maintenance not described in the manual must be carried out by an authorized workshop using original spare parts to ensure continuous and smooth operation. Unauthorized modifications or use of non-original parts will invalidate the warranty and may cause serious injury.
General| Brand | EMAK |
|---|---|
| Model | BCH 500 S |
| Category | Brush Cutter |
| Language | English |
