How to Make an Oleo-Mac Sparta Trimmer

How to Make an Oleo-Mac Sparta Trimmer

Lawn mowers, like all gasoline powered tools for the garden, are not difficult to maintain. It is possible and necessary to repair, configure yourself. For example, adjusting the carburetor of the lawn mowers with your own hands is a matter of five minutes.

Lawn mowing carburetor is a unit in the power system. In it, like any carburetors, there is a process of mixing air and fuel (gasoline) for further supply to the engine cylinders.

The main problems and malfunctions of the carburetor.

Strainer There are only two problems with this element:

  1. Clogging.
  2. Breakage

In order to find out the cause of the breakdown, the fuel filter cover is unscrewed to remove the strainer. If dirt has simply accumulated on it, washing with gasoline or blowing will help.

With visible damage to the strainer, it is imperative to install a new one. There may also be damage on the fuel supply pipe (during repair, check this element).

The carburetor starter in most cases does not function due to blockages. Use acetone or the same gasoline for flushing.

Blowing off carburetor parts with a blockage of compressed air is an acceptable and convenient repair practice.

The device of the carburetor lawn mowers

The basis of the carburetor of the lawn mowers is an aluminum case. It has a diffuser (hole with internal contours). Air is blown through this hole. The oxygen (air) flow rate depends on the cross-section (passage opening) of the diffuser.

The diffuser is equipped with fuel channels. Of these, fuel is drawn in using an air stream.

Outside the carburetor is installed:

  • Fuel pump;
  • Jet system;
  • Fuel / air mixture control system;

The principle of the carburetor lawn mowers

The throttle valve determines the amount of air for supply, and engine power directly depends on this.

Fuel is sucked into the carburetor system by a pump (its membrane). Then it passes through the fitting in the carburetor. Further, the fluid moves through the inlet and outlet valves of the pump. Filtered by mesh. The needle valve moves into the membrane chamber.

Phased operation of the device:

  1. Air supply to the tube with an air baffle (damper). The partition controls the intensity of the air flow.
  2. The fuel supply system must be narrowed by a diffuser to increase the flow rate.
  3. Gasoline through the float chamber and nozzle tube with narrowing. A camera with a float adjusts the temporary volume of gasoline. In the float chamber, the pressure level is neutral, and in the tube with narrowing is already low. Due to the pressure drop, fuel enters through the nozzle.
  4. The acceleration of the air flow contributes to the transfer of fuel (gasoline) and its atomization. As a result, an air-fuel mixture of the necessary proportion or density is formed.
  5. The air-fuel mixture enters the engine cylinder through the fuel pipe.

Video: How to Make an Oleo-Mac Sparta Trimmer

Trademark Oleo-Mac is an Italian company, a manufacturer that specializes in the manufacture of high-quality landscape gardening equipment. He is a member of the powerful international company Emak. For more than 40 years of being on the market, the company has gained recognition thanks to its high-quality and reliable products.

Lawn mowers from this manufacturer are also known worldwide. The range of gasoline trimmers of this brand is represented by the Oleo-Mac Sparta line. Below are the detailed specifications of the most popular modifications.

Trimmer Oleo-Mac Sparta 25

Oleo-Mac Sparta lawn mower 25 Eco Aluminum is designed for long-term work on the destruction of weeds and grass mowing over large areas. Lightweight but also productive. It is capable of mowing both young low grass and more rigid thickets of small shrubs. One cannot but pay attention to the high-quality and ergonomic design of the entire lawn mowing structure. Belongs to the Luxe class.

Equipped with a two-stroke gasoline engine. Also, the Oleo-Mac Sparta 25 Lawnmow has a unique fuel pumping system in the carburetor, which greatly facilitates the launch of the equipment.

The air filter is made of foam rubber, which allows you to work in conditions of increased dust and dirt. A spacious gas tank allows you to mow without interruptions for more than half an hour.

To avoid repairs and not to waste money on new spare parts for the trimmer, follow the instructions in the operating instructions, let the equipment rest, watch for gearbox lubrication.


  • Power – 1 hp;
  • Fuel tank capacity – 0.75 l;
  • Mowing system – fishing line / knife;
  • Bar diameter – 2.6 cm;
  • Handle – bicycle;
  • Weight – 6.2 kg.

Trimmer Oleo-Mac Sparta 37

Lawn mowing designed for long-term work in complex areas. The enlarged flywheel contributes to quick cooling. The transmission is made of aluminum, withstands heavy loads, dampens vibration, and betrays engine power without loss.


  • Power – 1.8 hp;
  • Fuel tank capacity – 0.87 l;
  • Mowing system – fishing line / knife;
  • Bar diameter – 2.6 cm;
  • Handle – bicycle;
  • Trimmer weight – 7.1 kg.

Lawn mowing Oleo-Mac Sparta 38

The model is very similar to the previous one – an enlarged flywheel, an aluminum transmission, a foam rubber filter. It features an increased rod diameter, which increases the strength of the product. The rest is just comfortable, economical, reliable and hardy lawn mowers.

  • Engine power – 1.8 hp;
  • Fuel tank capacity – 0.87 l;
  • Mowing system – fishing line / knife;
  • The diameter of the trimmer bar – 2.8 cm;
  • Handle – bicycle;
  • Weight – 7.3 kg.

Lawn mowing Oleo-Mac Sparta 44

Equipped with a more powerful engine than previous models. Thanks to a reinforced motor and an extended rod, it will become a reliable assistant both for users with a small personal plot and for professionals (public utilities and forestry workers).


  • Engine power – 2.1 hp;
  • Fuel tank capacity – 0.87 l;
  • Mowing system – fishing line / knife;
  • Rod diameter – 2.8 cm;
  • Trimmer handle – bicycle;
  • Weight – 7.4 kg.