How to choose the right lawn mower parts?

The operated equipment develops the resource of the nodes of which it consists, and will fail with the breakdown of any part. The correct choice and timely replacement of spare parts for lawn mowers will extend the working life of the tool. The tasks of providing the mechanism with spare parts are solved in two ways - in the service center, by ordering from the catalog.

Maintenance laws of complex equipment

Electrically powered lawn mowers or those powered by combustion engines are considered complex machines. Each piece of equipment, regardless of the price, is given to the buyer in a package with a set of documentation. In addition to a correctly completed warranty card, each instrument has an instruction manual. The manual contains a specification, which indicates the technical parameters, series and type of installed units. Even the same tool by type and brand in different years of production may have discrepancies in the equipment. Therefore, spare parts for lawn mowers are always selected according to the passport.

Petrol lawn mowers are very noisy. However, they only operate during daylight hours and comply with noise and environmental emission standards.

In the age of globalization, many nodes are standardized. For example, American engines can be found on models made in Europe or China. Therefore, the best solution would be to purchase responsible expensive units in specialized centers or after consultation with a specialist. This is true when your assistant has served faithfully for many years, has already been discontinued, and you need to look for suitable spare parts for the lawn mower.

In addition, there are nodes that have to be changed for preventive purposes, without waiting for the consequences of their poor performance:

• transmission belts may stretch or be damaged, dangerous for further operation;
• air filter on the carburetor, the fuel filter must be changed as it becomes clogged;
• the starter cord gradually wears out;
• the rotary knife becomes dull;
• the cutting line ends.

Depending on the type of engine, the equipment includes various components. For electric lawn mowers:

• electric cord or battery with charger;
• holder and adapter for a knife;
• wheels;
• electrical start-up and regulation system;
• grass ejection unit and grass catcher.

However, the most expensive will be to repair or replace an electric motor for a lawn mower.

For gasoline lawn mowers in addition to the listed working mechanisms, not only the engine will be valuable spare parts;

• carburetor;
• starter;
• ignition system;
• starting device.

For a long maintenance-free period, it is necessary to use fuels, additives and oils only from the recommended manufacturer. During operation, it is necessary to create conditions for the engine to work, since this is the most expensive unit in a lawn mower.

Choosing a rotary knife and line

Depending on the type of lawnmower, the cutting mechanism may consist of knives attached to the deck. The lawn mower blade can be of a rotary or spindle design. To replace the knives, you need to know the swath width and the brand of lawn mower. Different companies have different design for fastening knives.In the process of operation, they take shocks; if they are rigidly mounted at a high angular velocity, the impact inevitably leads to damage to the impeller. Therefore, the blade has freedom, it can deflect, transferring the load to the fastening bar or soft sleeve. Therefore, when ordering rotary knives, you need to know the type of attachment and the possibility of balancing. It may be better to order the complete cutting unit.

In order not to accidentally damage the cutting tool when moving the unit to a new cutting area along the curb or sidewalk, the knives must be turned off so as not to deform against a random object.

Spindle cutters are used only for leveling the lawn after mowing with rotary knives. Spindle cutters work like scissors. The entire node is replaced.

Lawn mower line is produced in a special profile and by numbers. Conventional fishing gear is dangerous and quickly deteriorates. When choosing a line, it is best to use an asterisk profile. The round profile is suitable for soft growing grass. There are special cords of a complex profile for professional tools. A quality line is considered to be made in France. Any doubts about the choice of the cutter will be resolved by the instruction manual, you just have to carefully read it.

Is it possible to replace the engine on a lawn mower

Often, engine breakdown occurs due to the failure of the vertical engine crankshaft. Knives are attached to this knot. As a result:

• mechanical blows to knives;
• loosening and wear of fasteners;
• the specificity of the loads on the unit, the crankshaft becomes unusable.

If the part cannot be repaired, the vertical shaft mower motor will need to be replaced.

Each type of lawn mower is equipped with its own engine. Motors from leading manufacturers or proprietary engines are installed on the tool. The same types of motors can be installed on chainsaw, boats, scooters and petrol cutters. Mower-mounted self-propelled motors have a long PTO shaft. If there is clearly not enough power to operate the unit, the engine can be replaced.

Most petrol cutters of any manufacturer are equipped with Briggs & Stratton or Honda engines. Replacing the engine with exactly the same simple action. Specialized shops sell models from well-known manufacturers. You just have to choose from the catalog the unit according to the parameters and meeting the requirements:

• easy start;
• durability and reliability;
• power.

Complete motors from renowned manufacturers are expensive. So the American Briggs motor, depending on the power, costs from 15 thousand rubles. Honda engines are in the same price range. The Chinese engine with a vertical crankshaft works well, you can buy it for 10 thousand rubles.

An electric motor for a complete lawn mower can be bought much cheaper. So, the SG6-36E-021 motor costs a little more than 2 thousand. The power unit is designed to be powered from a 220V network, has a power of 1.1 kW. The shaft is located vertically.

Using an extension cord in the garden

Electric Lawn Mower has a sufficiently long power cord. An extension cord for a lawn mower is chosen according to the principle of finding the coil in the area of ​​the switch. These are the requirements for safe work. The extension cord on the reel is constantly left near the mains switch, only the wire is unwound. At the same time, all actions take place easily and silently. When buying an extension cord, you need to choose models in a waterproof case. Choosing the right size will help:

• calculation of the serviced area, while the shape of the site and the number of stationary outlets are important;
• choice of cord thickness based on the power of the lawn mower engine - for powering an engine with a power of up to 1.5 kW - 0.75, up to 2 kW - 1.0, over 2 kW - 1.5 mm² wire cross-section;
• for grounding, the third core of the wire is used, therefore the number 3 should be in the marking.

It is better if the wire has only one outlet, it should be rubberized. For work in the summer, a PVA wire is better suited, a KG wire is considered universal for work in any conditions.

Belt drive on a lawn mower

The transmission link of rotation from the engine to the working body is the belt. It is an endless belt that drives the actuator by frictional force, which makes a pulley with rivulets rotate. The profile of the belt repeats the pattern of the pulley - poly-V. Expending efforts, the belt stretches. A loose belt can slip and smoke from friction, but not rotate the braid. If the tension no longer helps, the belt is replaced. In this case, you should choose a belt according to the geometric dimensions indicated in the instructions. Belts are produced by the world's leading companies MegaDyne, Bando, Bancollan, PiBelt, SKF. The difference between belts for lawn mowers is that they are made of injection molded polyurethane reinforced with polyester cord. For trimmers, the belts have an internal toothed profile.

Replacing the starter

A starter is a unit through which internal combustion engines are started. To obtain an ignition spark, you need to direct the EDS, which is done by pulling the cord, pulling it out of the socket. It is brought back to its original position by a spring. If the cord is worn out or sticks when starting, the starter must be replaced. To finally make sure that the starter does not work, you need to disconnect the unit and pull out the cord at idle speed.

There are mechanical and electrical starters. Each mechanism works with motors of the same brand. Therefore, you need to buy a starter for a lawn mower by the type of engine or the brand of the unit.

Replacing the air filter

Internal combustion engines run on filtered fuel and purified air. Otherwise, abrasive wear of the combustion chamber groups will lead to expensive repairs. Filters can be of different filling and composition, most importantly, the porous surface must allow air to pass through and retain dirt. The filter should be cleaned and rinsed as it becomes clogged. But the pores gradually become denser, and not enough air passes through. The best panel filters are Donaldson's products, which filter 99.99% of contaminants due to their highly developed porous zone.

The Briggs Stratton lawnmower air filter should be cleaned after 25 hours of operation and replaced as needed. The cost of the filter is 80 rubles.

Changing wheels

Replacement of wheels on a lawn mower takes place in exceptional cases. There are drum and rotary devices. The drum wheels are equipped with two wheels, the rotary ones are equipped with four. The wheels for the lawn mower are the same dimensions as previously installed. For rotary units, the pair must be replaced. Bearing designs are considered the best, they are more durable.

Lawn mower repair - video