Cub Cadet MTD P71 Series - Manual (Page 98)

P71 Series Vertical Shaft Engines
92
Piston Inspection
1. Separate the piston from the connecting rod:
1a. Remove one of the piston pin clips.
See Figure 10.11.
1b. Push the piston pin out of the piston.
1c. Slide the connecting rod out of the piston.
2. Clean the piston and remove all carbon from the
rings and ring groves.
3. Insert one ring into the cylinder. Push it down about
one inch from the top. See Figure 10.12.
4. Measure the end gap with a feeler gauge and com-
pare to the chart at the end of this chapter.
See Figure 10.12.
5. Repeat steps 3 and 4 on the other rings.
6. Install rings back onto the piston.
NOTE: To help identify the top surface of the piston
rings, they have letter(s) etched on them.
See Figure 10.13.
Figure 10.11
Piston pin clip
Figure 10.12
Feeler gauge
Piston ring
Figure 10.13
Top ring
Middle ring