Subaru Robin Power Products R1200 service manual Piston and Piston Ring

9-4-2 PISTON AND PISTON RING

(1)If a ring expander is not available, set the ring joint at the first land of the piston, as shown in Fig. 9-4-4. Then, open the joint wide so that the ring can be slid into the fegular groove.

Note: Be careful not to twist or expand each ring too excessively. The oil ring is fitted onto the piston, followed by the second ring and top ring.

Top Ring

Second Ring

Oil Ring

F&. 9-43

(2)The connecting rod is joined to the piston with the piston pin.

Note: Prior to assembly, apply sufficient lub- ricating oil, to the connecting rod minor edge.

Note: Be sure to secure the clips to both sides of the piston pin.

(3)In setting the connecting rod, hold it with a piston ring guide, as shown in Fig. 9-4-5, (or, if there is no ring guide, tap the piston head with a wooden object pressing the piston ring with a finger tip to push it in). Set it to the position of the @ mark or MA mark of the connect- ing rod in the flywheel magneto side.

Note: Prior to assembly, apply sufficient lubricating oil to the piston ring, con- necting rod metal, and cylinder wall.

Note: Fit the piston with the piston rings arranged 90* from the periphery of the piston.

Fig. 9-4-4

Piston Ring Guide

F&T 94-5

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