Remove the air filter assembly.
Disconnect fuel lines from pump.
Remove fuel drain hose 1 (see photo), oil supply pipe 2, coolant supply hose 3 and oil dipstick bracket with starter wire holder.
At the rear of the pump, disconnect the coolant drain hose 4, the oil outlet pipe 5 and the hose 6 for supplying additional air to the warm-up sensor. Remove bolt 7.
Disconnect the connecting rod from the pump control lever and remove the top protective cover.
Install the piston of the 1st cylinder (counting from the pump drive side) to the TDC position. In this case, the mark on the crankshaft pulley should be set against the mark on the cylinder block, and the mark on the toothed pulley of the pump drive should coincide with the mark on its cover.
Remove the pump drive sprocket using puller 6078.
Remove the injection pump by turning it so that the spherical cup is released from the intermediate shaft.
Pump installation is carried out in the reverse order of removal, taking into account the following:
- direct the pump so that the spherical cup can be inserted without force into its seat. Don't forget to put on the dust cover;
- before installing the pump drive gear pulley, make sure that the piston of the 1st cylinder is in the TDC position and that the key is inserted into the groove of the pump shaft;
- install fitting «A» (see photo) so that it does not interfere with the movements of the mixture enrichment lever;
- do not interchange the fuel lines connected to the pump;
- perform throttle synchronization.