This section contains various articles on bringing motorcycle equipment from the Kovrov plant into working condition. From the frame to the electrical equipment and ignition. You can do all the work yourself. Install tires. Bring the exhaust system into working order. From the earlier first devices K-125, you will learn how to check the relay regulator for serviceability.
In what cases is it necessary to adjust the clutch of a Voskhod motorcycle.
The thread in the engine crankcase is broken. The old engine has been used for a long time on a homemade winch for plowing.
The Voskhod motorcycle must be repaired regularly throughout its operation without waiting for serious breakdowns.
The owner of a two-wheeled vehicle sooner or later has to deal with engine repairs.
The crankshaft consists of a crank pin on which a large connecting rod head is mounted and rotates in roller bearings, two cheeks and two conical journals pressed into the cheeks. Before inspection, the crankshaft must...
Detailed instructions for assembling a 175 cc engine from the Kovrov plant. Step-by-step correct order of installation of parts. Directly affects the quality of preparation of the power unit for operation...
A very important point during repairs is the selection of the piston to the cylinder. The entire operation of the motorcycle depends on this. Both the launch and the entire work process. Mainly affects the compression ratio and power. ...
We have selected useful articles on motorcycle care. Disassembly of the power unit is very detailed in Voskhod. Preparation for winter and storage. Timely lubrication and replacement of engine oil. High-quality care for an iron horse prolongs its life and preserves its characteristics in their original form. Therefore, you need to constantly look at the instructions and manuals.
Motorcycle engine Voskhod 3M single-cylinder, two-stroke with a volume of 173.7 cubic centimeters. The cylinder diameter is 61.7 millimeters. The piston stroke is 58 millimeters. The maximum power in kilowatts is 9.9, and in horsepower it is 13.5.
To remove and install the cylinder head of the Voskhod motorcycle, it is necessary. Remove the high voltage wire cap from the spark plug. Unscrew the four nuts.
Preparatory work for removing the cylinder and piston. Open the saddle lock and place the saddle on the stop. Close the petrol tap and disconnect the petrol hose.
In order to remove the clutch basket of the Voskhod-3M motorcycle, the forward gear and the starting mechanism, it is necessary. Drain the oil from the gearbox housing through the drain hole located in the bottom of the crankcase.
The right engine cover of the Voskhod covers and protects several important systems of the Voskhod motorcycle. The reason for removal may be not only malfunctions, but also simply correct engine maintenance provided by the manufacturer.
Necessary work to remove the gearbox seal of the Voskhod road motorcycle. Remove the clutch release rod. Bend the section of the control washer bent onto the edge of the nut, then unscrew the nut (left-hand thread).
Motorcycles Voskhod, Voshod-2(M) and Voshod-3(M) were produced from 1965 to 1993 and were distinguished by excellent technical and operational qualities for their time. All of them were equipped with 173 cc two-stroke engines, which had one air-cooled cylinder and carburetor power. This allowed the motorcycle, depending on the modification, to reach a maximum speed of 90-105 km/h with a fuel consumption of no more than 4.5-5.5 liters per 100 km. In general, Voskhod has established itself as a reliable and durable vehicle, capable of operating for many years with proper maintenance. However, time takes its toll, and the need to repair Soviet equipment arises more and more often. Let's try to figure out what features are characteristic of restoring the main components and assemblies in the process of repairing a Voskhod motorcycle.
Engine
The “heart” of a motorcycle, even with the most careful use, gradually wears out - this is facilitated by the abundance of heterogeneous mechanical loads in the cylinder-piston group and other moving parts, temperature effects on the metal, the chemical composition of the working mixture and exhaust gases.
DIY motorcycle repair Voskhod most often includes the following engine work:
- removing the power unit from the motorcycle frame;
- partial or complete disassembly of the internal combustion engine;
- replacing piston rings;
- restoration of the cylinder mirror;
- repair or replacement of the piston, connecting rod, crankshaft;
- replacement of support bearings, liners, seals;
- lubrication, fastening, adjustment work.
Engine repair, like the repair of other units, must be preceded by a comprehensive diagnosis of its technical condition, which includes an analysis of operational parameters (approximate indicators of developed power and speed, fuel consumption, sound of operation, color and character of the exhaust). If necessary, diagnostics are performed on the bench, and specialized instrumentation is used.
It is important to navigate the structure of a two-stroke internal combustion engine of a motorcycle and understand how each specific type of repair is performed. So, when replacing piston rings, you can do without removing the engine. It is enough to unscrew the stud nuts, remove the cylinder cover and, opening access to the piston, bring the piston to top dead center. Then the worn rings are removed and new ones are installed. The engine is assembled, not forgetting to replace the gasket. This completes the repair.
Much more complicated is the process of replacing the crankshaft bearings and its seals, the need for which, especially if the motorcycle is used incorrectly, arises quite often. You will need to disconnect and remove the internal combustion engine, clean its external surfaces, disassemble the crankcase, allowing access to the crankshaft, and dismantle the latter. It is important to be careful when knocking out old bearings - if they become distorted, they can damage the seat. And, no matter how trivial it may sound, do not forget to remove the retaining rings. Then the new bearings are carefully pressed in, the crankshaft is installed on the left side of the pan and the engine is turned over. A pin is put on the nuts and the assembled module is screwed into the studs. The power unit is assembled in the reverse order.
In case of wear of the inner surface (mirror) of the cylinders, they are bored to repair size and ground. This is a complex and highly precise job that must be carried out by experienced professionals and using special equipment. However, preliminary work - removing and disassembling the internal combustion engine - can be done independently. After the repair, you will have to replace the piston with rings with parts from the corresponding repair group.
Ignition and carburetor
It is these two components that, as a rule, determine the stability of the engine. Often, interruptions in the crankshaft rotation speed, loss of traction, and difficulties starting the engine are associated precisely with their malfunctions. Repairing the ignition and carburetor usually comes down to adjusting them. Setting the ignition includes setting the gap between the coil core and the sensor magnet within 0.295...0.305 mm. The piston ignition timing should be 3.5-5 mm to top dead center.
Adjusting the carburetor is somewhat more difficult. If you are repairing a Voskhod-3M motorcycle, then you will have to deal with the K65V carburetor, and the main tools will be the quality and quantity screws included in its design. Using the first, you can lean or enrich the mixture - change the proportion of fuel and air entering the cylinder. The second determines its volume per working cycle. With the standard setting, the quality screw is screwed in completely and then unscrewed half a turn. Then the rotation of the quantity screw achieves the minimum stable speed and the quality of the mixture is re-adjusted. Finding the optimal adjustment balance is a search for maximum traction and stability with minimum fuel consumption. 
Transmission
During transmission repairs, the following work may be required:
- Adjusting the clutch, replacing its disc and bearing;
- Clutch drive repair;
- Replacement of gearbox bearings;
- Repair of switching module parts;
- Restoration or replacement of gearbox gears.
Most of them require high qualifications and are difficult to do at home. The exception is the repair and replacement of drive mechanisms. So, sometimes there is a need to restore the splines for the gearbox foot, replace the clutch cable or its jacket, or adjust the clutch. These works are carried out without disassembling the crankcase.
Repair and operation of the Voskhod motorcycle are closely interconnected due to the age of the model. However, with the proper approach to organizing and carrying out repairs, the motorcycle will remain your faithful friend and assistant for a long time.
