Connecting Rods and Pistons/Pistons and Connecting Rods 9. Install a new gasket on cylinder head. 10. Install cylinder head on cylnder block. Install flat washer (A), two compression washers (B) with outside edges contacting each other, and nut (C) on each of the top six longer studs. Install flat washer and nut on each of the bottom four shorter studs. Tighten nuts in several steps in sequence shown. M36413 -UN-29JAN90 M36414 -UN-29JAN90 NUT TORQUE SPECIFICATIONS T260 Engine Top Six Nuts (with compression washers) . . . . . . . . . . . . . . . . . . . . 16 ± 1 N·m (142 ± 12 lb-in.) Bottom Four Nuts . . . . . . . . . . . . . . . . . . . . . . . . . . .
20 ± 1 N·m (180 ± 12 lb-in.) CTM2 (19APR90) 30-25 16, 18, 20 & 24HP Onan Engines M98,2030K,42 -19-10OCT85 AllTractorManuals.com 130495 NOTE: To install cylinder head on T260 engine, go to Step 9. 7. Install a new gasket on cylinder head. 8. Install cylinder head on cylinder block with the five -UN-29JAN90 longest cap screws in the top holes of cylinder head. Tighten cap screws in several steps in the sequence shown. CAP SCREW TORQUE SPECIFICATIONS M36411 B43E, B48G, P218G, P220G Engine . . . . . . . . . . . . . . . 20 ± 1 N·m (180 ± 12 lb-in.) B43E Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
23 ± 1 N·m (204 ± 12 lb-in.) -UN-29JAN90 M36412 M98,2030K,41 -19-11FEB87 30 25