Disconnect electrical connector "3" of the starter, move the lock back and press the stopper down. Unscrew nut "2" of the electrical wire and remove the starter. "Pos. 1, 4" do not take into account.
Unscrew the "arrow" bolts. Unscrew the "1...10" bolts and remove the lower chain drive cover. Press the crankshaft seal from the gearbox side out of the lower chain drive cover.
Installation
Replace the gaskets, O-rings and O-rings. Remove the right upper fitted bushing from the cylinder block. File the edges of the centering bushings as shown in the figure.
Size "x" = 6.5 mm. Size "y" = 8 mm.
Install the bushing on the cylinder block so that the turned side faces upwards. This bevel makes it easier to install the lower chain cover with the cylinder block installed. Close the open engine parts. Remove any remaining sealant from the chain cover, cylinder block and cylinder head, for example with a rotating brush attachment with plastic bristles. Clean the mounting surfaces; there should be no oil or grease on them. Be sure to clean the threaded holes for fixing the power unit in the cylinder block before assembling the gearbox with a tap. Clean the "arrow" holes in the cylinder head gaskets from old sealant.
When the cylinder head is installed, the holes in its gasket are only half visible. Slightly bend the ends of the cylinder head gasket, do not twist. A broken cylinder head gasket should be replaced. Slightly bend the ends of the cylinder head gasket down so much "arrow" so that it becomes possible to clean the upper seating surface of the gasket and the cylinder head.
Clean the cylinder head gaskets from below and above, they must be degreased. Consider the expiration date of the sealant. Cut off the tube tip at the front mark (hole diameter approx.2mm). The sealant must be applied to several parts of the engine, as described below. Apply a thin layer of sealant to the landing surfaces on the top and bottom of the cylinder head gaskets, to do this, slightly bend the gaskets down again "arrows". To apply the sealant to the surface between the cylinder head and the gasket, use a flat object: for example, a plate probe. Fill the cleaned arrow holes of cylinder head gaskets with sealant. Risk of blockage of the lubrication system channels if there is an excess of sealant. The sealant roller must not be thicker than the specified size. Apply sealant rollers "1...4" on the clean seating surfaces of the lower cover of the drive chains, as shown in the figure.
The groove of the seating surface must be filled with sealant. The beads of sealant must protrude above the seating surface by 1.5...2.0 mm. Bead of sealant "2" should be applied as shown in the figure, even if the groove is interrupted. The minimum curing time of the sealant is only about 5 minutes after application. Insert the gaskets "arrows" into the grooves of the lower cover of the drive chains. Install the lower cover of the chain drives, while moving the cover from below diagonally to the seating surface of the cylinder block and cylinder head. When installing, be careful not to damage the cylinder head gaskets. Tighten the bolts of the lower cover of the timing chain drive. Installation in the reverse order: install the starter. Install the generator. Install the oil filter housing. Install the protective covers of the timing chains on the left and right. Install the crankshaft oil seal.