0315123 EVINRUDE HOUSING, Exhaust

1. Remove two camshaft drive gears (1) from the ends of the camshafts with tooling (A). 2. Remove bolts (3) to remove bracket (2) from the flywheel housing. 3. Remove bolt (4), and disconnect marine gear oil pressure line (5) and air restriction line (6). 4. Remove bolts (7) to remove housing (8) with three water lines (11) from the engine.5. Remove three bolts (9) to disconnect marine gear oil pressure line (5), air restriction line (6) and two temperature sending unit wires (10) from the flywheel housing. Put the lines and wires out of the way of the housing.6. Drain the oil from the oil pan. 7. Remove all the bolts that hold the oil pan to the engine. Install two 3/8"-16 NC guide bolts (12) in each side of the oil pan. Fasten a hoist to the engine, and lift the engine approximately 12 mm (0.5 in.) off of the oil pan. Put two 50 mm wide × 100 mm long × 6 mm thick (2" wide × 4" long × 1/4" thick) plates (13) in position between the cylinder block and the oil pan on each side of the engine. Lower the engine on plates (13), and remove the hoist. The weights of the engines are as follows: 3508 Engines - 4445 kg (9800 lb.), 3512 Engines - 5443 kg (12000 lb.), 3516 Engines - 7763 kg (17114 lb.). 8. Use tooling (B) to fasten a hoist to flywheel housing (14). Remove two of the bolts that hold flywheel housing (14) in position, and install two 1/2"-13 NC guide bolts (15). Remove the remainder of the bolts that hold flywheel housing (14), and pull it from the dowels in the cylinder block. Remove the flywheel housing from the engine. The weight of the flywheel housing for 3508, 3512 and 3516 Engines is 237 kg (522 lb.).Install Flywheel Housing
The 3500 series engines use two types of flywheel housings. An accessory drive housing can be attached to the SAE "O" flywheel housing. The SAE "00" is the standard housing.
SAE "00" 1. Put the flywheel housing gasket in position on the rear of the cylinder block.2. Install two 1/2"-13 NC guide bolts in the rear of the cylinder block. Fasten a hoist to the flywheel housing with tooling (A). Put the flywheel housing in position, and install the bolts in their respective location.3. Tighten both the SAE "00" and "0" flywheel housing 1/2"-NC bolts to a torque of 5/8 100 14 N m (74 10 lb.ft.). The "-11 NC bolts are tightened to a torque of 200 25 N m (148 18 lb.ft.). Cut the flywheel housing gasket even with the bottom of the cylinder block.4. Tighten three plugs (1) in each housing to a torque of 70 15 N m (52 11 lb.ft.).
SAE "0"5. If it is necessary to remove dowels (R) in the SAE "0" flywheel housing, the replacement dowels are installed to a height of 6.0 0.5 mm (.24 .02 in.). 6. Fasten a hoist to the engine, and lift the engine enough to remove the plates between the cylinder block and the oil pan. If the oil pan gasket is damaged, the engine will have to be removed from the oil pan to make a replacement of the gasket. Lower the engine on the oil pan, and remove the guide bolts from the oil pan. Install all bolts (2) that hold the oil pan in position. 7. Install housing (3) with the three water lines on the engine. 8. Put air restriction line (6), marine gear oil pressure line (5) and two sending unit wires (4) in position on the flywheel housing. Connect the two lines, and install the bolts that hold the lines and wires in position. 9. Install bracket (7) and the bolts that hold it to the flywheel housing. 10. Put drive gears (8) in position on camshafts (9), and install the plates and bolts that hold drive gears (8) in position. (For correct timing, all gear clearance.(backlash) must be removed. Turn camshaft drive gears (9) in the same direction as crankshaft rotation, and hold this position.) Tighten the bolts evenly to a torque of 100 15 N m (74 11 lb.ft.). Hit the plates with a hammer, and tighten the bolts again to the same torque. Do this until the torque does not change.11. Fill the engine with oil to the correct level. See the Maintenance Manual.End By:a. install exhaust elbowb. install tachometer drivec. install crankshaft rear seal and wear sleeved. install air starter (an attachment)