13. Remove the PTO-side piston-pin circlip from the PTO-side piston; then remove the MAG-side piston-pin circlip from the MAG-side piston.
Fig. 2-102
Fig. 2-104
AN415D
8. Remove the three cap screws securing the thermostat cap; then remove the cap, gasket, and thermostat.
AN315D
14. Using the Piston Pin Puller (p/n 0644-328), remove the piston pins from both pistons.
9. Remove the spark plugs. NOTE: On the 580 cc, remove the cap screws securing the thermostat manifold to the cylinder heads. Remove the manifold and discard the gaskets.
10. Remove the cap screws with O-rings securing the cylinder head(s); then separate from the cylinders. Account for the O-rings.
NOTE: For proper assembly, keep all MAG-side components and all PTO-side components separated. Assemble them on their proper sides. Fig. 2-105
11. Remove the oil-injection hose from each cylinder and the crankcase nozzle. Fig. 2-103
AN316D
! CAUTION
AN420D
12. Remove the eight nuts (with lock washers and washers) securing the cylinders to the crankcase; then using a rubber hammer, gently tap the cylinders and remove from the crankcase by lifting them straight up off their studs. Account for gasket(s) and any alignment bushings.
DO NOT use any type of punch to drive the piston pin free of the piston; damage may result. Use a piston-pin puller only.
15. Lift the pistons clear of the connecting rods and remove the small-end connecting-rod bearings (account for two washers); then remove the piston rings. Keep each piston with its rings; keep each piston pin and bearing together as a set.
! CAUTION When removing a cylinder, be sure to support the piston to prevent damage to the crankcase and piston.
2-25
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