Exhaust system: 1 - gasket; 2 - catalytic converter; 3 - sealing gasket; 4 - vibration-isolating coupling; 5 - additional muffler; 6, 10 - muffler suspension cushions; 7 - catalytic manifold bracket; 8 - intake pipe; 9 - metal sealing ring; 11 - main muffler; 12 - clamp brackets.
The exhaust system consists of an exhaust manifold, an inlet pipe, a main muffler and an additional muffler and is equipped with a catalytic converter.
The connection between the exhaust manifold and the cylinder head is sealed with a two-layer metal gasket. The engine exhaust manifold is made of steel. The catalytic converter is combined with the exhaust manifold into a single non-separable unit - the catalytic manifold (cat collector). This reduces the time it takes for the neutralizer to warm up to operating temperature and increases its efficiency. There are two oxygen concentration sensors installed in the catalytic converter - before and after the neutralizer. The connection between the catalytic collector and the inlet pipe is sealed with heat-resistant material (metal asbestos) gasket. To reduce the transmission of vibrations to the body and reduce the load on the system during vibrations of the power unit, the connection of the intake pipe with the additional muffler is made through a vibration-insulating coupling (see picture).
The connection between the main and additional mufflers is rigid, with a steel sealing ring. A heat-protective metal screen is attached to the body above the additional muffler.
The exhaust system is suspended from the body brackets on four rubber rings - cushions. The cushions of the additional muffler suspension and the front suspension of the main muffler are interchangeable. The main muffler suspension cushion is reinforced.