Edpedia

This is a simple glassary, explaining some of the more common terms in the world of garden machines!

Air filter  Component which protects the engine by preventing dust from entering the cylinders.

Anti-vibration system Vibration damping system which completely isolates the handles from the rest of the tool for maximum user comfort, even during prolonged use.

Automat System System which stops the blades when the collection bag is full.

Bag  Recipient into which grass clippings are deposited. The width of the bag determines the collection capacity and the amount of time between emptying.

Bar and chain  These two components comprise the cutting apparatus of a chain saw: the toothed cutting chain slides along the guide bar.

Bearing  Mechanical device which reduces friction in the wheels. Wheels mounted on bearings ensure consistently smooth running, even over the most uneven terrain.

Bevel gear  A transmission system with helical gears which transfers movement to the cutting assembly, parallel to the ground, with suitable speed reduction.

Carburettor  Mechanical part of internal combustion engines which blends air and fuel for injection into the combustion chamber.

Carving bar  Particularly useful for tending plants when a precise and deep cut is needed. The carving bar is specially designed for wood carving and sculpting.

Casing  Metallic enclosure which protects the engine components.

Catalytic muffler  A device installed in the initial section of the exhaust system which drastically reduces the quantity of pollutants (carbon monoxide, hydrocarbons and nitrogen oxides) present in the combustion gases.

Chain tensioner  Used after every 30 minutes of operation, enables the chain tension to be adjusted by means of a screwdriver, without disassembling any components. The correct tension is achieved when the chain can be raised a couple of millimetres away from the guide bar.

Change Over system System which enables the machine to be switched easily between the collection and mulching functions, by means of a handy lever.

Compression Wave Injection  Fuel injection method for two-stroke engines, whereby a compression wave is used to deliver a rich fuel mixture into the engine cylinder.

Connecting rod  Part of the connecting rod-crank mechanism, e.g. the mechanism which enables alternate rectilinear motion to be transformed into continuous rotary motion.

Crankshaft  A rotating mechanical shaft with a series of cranks which enables the movement of the connecting rods is transmitted to the power take-off.

Cutting width  The cutting width depends on the cutting deck of the machine, in relation to the expanse of the area to be cut.

Cylinder  The cylinder is the component used to create linear motion; the area in which the combustion process takes place.

Deck  Body of the lawnmower, can be made of plastic (propylene or ABS), steel or aluminium.

Depth gauge  On chain saws, this device regulates the maximum cutting depth of the chain.

Digital coil  Generates high-voltage current, which when it reaches the spark plug creates the spark which triggers combustion.

Dipstick  The dipstick, present in 4-stroke engines, is immersed in the oil and is used to check the level (MIN and MAX with graduated scale) and quality of the oil.

Drive belt  A drive belt is a mechanical transmission component looped over pulleys which is used to provide an elastic but solid link between two rotating shafts.

Expansion clutch  Transmits movement to the cutting implement and also enables it to remain stationary at idling speed without having to stop the engine.

Fuel tank  Container for storing fuel inside the machine.

Grease nipple  System which simplifies periodic replenishment of lubricant grease in the gearbox.

Handgrip rotation  (180°, 90° clockwise and 90° anticlockwise) System which ensures maximum versatility of use, even close to walls.

Handlebars  Leverage system which enables the equipment to be kept under control.

Inertia-activated chain brake  Stops the chain in the event of kickback. Activated manually by means of a lever, or automatically, when the front hand guard is pushed forward due to unexpected kickback.

Knob  Handgrip which enables the machine's cutting height to be altered.

Lift Starter Device which automatically cuts off the starter when the accelerator is fully throttled.

Lockable differential  The differential is a device which enables two wheels to move at different speeds. Locking the differential prevents one of the two drive wheels from spinning in the event that it temporarily loses grip.

Mixture  Mixture of lubricant oil and fuel which is usually used in two-stroke engines. This mixture is important because it lubricates the mechanical components of the engine and provides a source of energy.

Mulching cut  Cutting system which repeatedly chops up grass into fine particles and then scatters it evenly over the turf.

Oil pump  Draws lubricant from the sump and sends it to pressurised components in the engine lubrication circuit.

Piston  The moving component, housed inside the cylinder and connected by means of the gudgeon pin to the connecting rod, which forms a "mobile wall" of the combustion chamber.

Power take-off  The power take-off or PTO consists of a connection at the back or front of the machine to which implements are attached.

Primer & Starter Devices which facilitate cold starting of the engine. Specifically they enable the carburettor to be instantly filled with fuel ready for starting.

Propulsion  Can be push-type, for smaller areas, or self-propelled for larger areas.

Quick Fit system System which allows quick attachment and removal of the cutting deck and other accessories in just a few minutes, without the need for tools.

Reduction unit  Assembly used to transmit rotary motion with a reduction in the number of revolutions.

Rotor  A component which rotates inside the stator and which transmits motion to electrical machines.

Safety Control system Safety system on Multimate which stops the engine as soon as the operator tries to detach the implement from the drive unit.

Self-cleaning filter  The special design of the air filter and corresponding mount reduces the need for maintenance.

Starter rope handle  Handle connected to the recoil starter rope which is used to start the engine.

Total Stop system System switches off the motor when the flow of water through the wash lance is shut off.

Transmission  The set of components which transfer the power generated by the engine or motor to the wheels.

Turning radius  Radius or diameter of the arc-shaped path travelled by the front wheels with the steering wheel turned full lock.

Variable speed control  System with enables the machine to operate over an infinite range of speeds, making it adaptable to any type of grass.

Voltage and frequency  Ratings within which the power supply must operate for the use of electrical appliances.