105400-4261 ZEXEL 9 420 610 167 BOSCH GOVERNOR 9420610167 1054004261

3. Remove the connecting rod caps (1) from these pistons, and push the pistons upward until the rings clear the cylinder liner. 4. Remove the two pistons.5. Repeat Step 2 through 4 for the remaining pistons.Install Pistons
1. Thoroughly lubricate the crankshaft bearing journals and cylinder liners with clean SAE 30 engine oil.2. Lubricate the piston rings and connecting rod bearings with clean SAE 30 engine oil. 3. Using compressor (A), install the pistons with "V" mark on piston aligned with "V" mark on cylinder block. Guide the lower end of the rod over the crankshaft journal to prevent damage to the crankshaft.4. Lubricate the threads of cap retaining bolts with clean SAE 30 engine oil.5. Position the caps on the connecting rods, and install retaining nuts. Tighten nuts initially to 30 3 lb. ft. (4,1 0,4 mkg). Mark the nut and end of bolt, and tighten nut an additional 90° from mark.
When installing connecting rod cap, be sure that the number marked on side of cap is adjacent to and corresponds to the number marked on side of connecting rod.
6. Rotate the crankshaft until the next two bearing journals are at bottom dead center.7. Repeat Steps 2 through 5 for the remaining two pistons.concluding steps: a) install oil pumpb) install cylinder head assemblyDisassemble Pistons
preparatory step: a) remove pistons 1. Remove piston pin retaining rings (2).2. Remove piston pin (1) and remove piston from the connecting rod. 3. Remove the piston rings using ring expander (A).Assemble Pistons
1. Using ring expander (A), install the piston rings. The two compression rings are marked "UP - 1" and "UP - 2". The rings must be installed with these marks toward the top of the piston with "UP - 1" being the top ring. After all three rings have been installed on piston, stagger the ring caps 120° apart.2. Lubricate the piston pin with clean SAE 30 engine oil. 3. Position the piston on the connecting rod with the "V" mark (2) on the piston and number (1) on the connecting rod on the same side.4. Install the piston pin retaining rings. Make certain the retaining rings are seated in their grooves.concluding step: a) install pistons