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rings enter the cylinder bore. Remove the shop rag from 12. Continue to slide the cylinder down until it bottoms 13. Repeat Steps 1-12 to install the other cylinder. 14. Install the cylinder heads as described in this chapter. PISTONS AND PISTON RINGS Piston and Piston Rings Removal Refer to Figure 124. 1. Remove the cylinder as described in this chapter. 2. Cover the crankcase with clean shop rags. 3. Lightly mark the pistons with F (front) or R (rear) (A, WARNING The piston pin retaining rings may spring out 4. Using an awl, pry the piston pin circlips (Figure 140) NOTE Mark the piston pins so they can be rein- 5. Support the piston and push out the piston pin (B, Fig- 6. Remove the piston from the connecting rod. 7. Remove the piston rings by using a ring expander tool 8. Inspect the pistons, piston pins and pistons rings as de- Piston Inspection 1. If necessary, remove the piston rings as described in 2. Carefully clean the carbon from the piston crown (Fig- ENGINE 133 4 139 140 141 Pad Nut Nut Threaded rod Washer Pipe Piston pin Piston pin |