1. Connect the connecting rods to the pistons so that the mark on the piston is directed towards the front of the engine (to timing).
2. Install the piston pin installer guide.
3. Apply a coat of clean engine oil to the pistons.
4. Install piston pins (see fig. Т250 2.075)
5. Measure the gap in the locks of the new piston rings by installing them in the cylinder without a piston.
6. Measure the side clearances between the rings and the walls of the piston grooves. Based on the results of measurement, if the wear of the grooves is too great, replace the pistons.
7. Install the piston rings in the sequence shown in the illustration using a ring expander.
8. Distribute the piston ring gaps as shown in the figure.
9. Apply a coat of engine oil to the cylinder walls.
10. Install the pistons into the cylinders using a ring breaker, lightly tapping with a wooden hammer handle.