Filed Under (Harley Davidson) by admin on 19-02-2011

REMOVAL Prepare for Service 1. Position motorcycle on a suitable lift. NOTE If vehicle is equipped with Harley-Davidson Smart Security System, see owner’s manual for instructions to disarm the system. To prevent accidental vehicle start-up, which could cause death or serious injury, disconnect negative (-) battery cable before proceeding. (00048a) 2. Disconnect battery cables, negative (-) battery cable first. 3. Remove seat according to the instructions in the service manual. 4. Refer to service manual to remove left saddlebag and side cover. When servicing the fuel system, do not smoke or allow open flame or sparks in the vicinity. Gasoline is extremely flammable and highly explosive, which could result in death or serious injury. (00330a) 5. Remove fuel tank according to the instructions in the service manual. Remove Engine Components 1. Remove existing air cleaner assembly. Discard backplate but save remaining parts. Refer to AIR CLEANER REMOVAL in service manual. 2. Remove existing exhaust system. Refer to EXHAUST SYSTEM REMOVAL in service manual. 3. Remove engine from chassis following the instructions in the service manual. 4. Disassemble engine top end and bottom end. Refer to appropriate ENGINE sections in service manual. 5. Remove existing clutch diaphragm spring. Refer to CLUTCH REMOVAL in service manual. The procedures in this instruction sheet should be performed by one experienced in precision measuring techniques. Failure to meet tolerances called for in this instruction sheet can result in engine damage. (00511b) -J04793 1 2 is03517 1. O-ring counterbore 2. Spigot bore Figure 1. Spigot Bore and O-Ring Counterbore Dimensions Table 1. Spigot Bore and O-Ring Counterbore Dimensions Depth Bore Description 1.625 +/- 0.010 in. (41.3 +/- 0.25 mm) 4.205 +/- 0.010 in. (107 +/- 0.25 mm) Spigot Bore 0.085 +/- 0.003 in. (2.16 +/- 0.08 mm) 4.415 +/- 0.002 in. (112 +/- 0.05 mm) O-Ring Counter- bore is03456 Figure 2. Cylinder Wall MACHINE CRANKCASE Crankcase Boring Preparation NOTE During final assembly of the engine, Harley-Davidson recommends replacing the OE cylinder studs with Screamin’ Eagle High Tensile Studs (16505-01). 1. Remove cylinder studs from the engine crankcase. 2. Mask off all bearings and oil holes to prevent debris and contaminants from entering those areas. 3. Inspect and clean engine case mating surfaces. 4. See Figure 6. Reassemble engine case with OE screws, except the top center screw between the cylinders, and tighten to specifications listed in service manual. NOTE To prevent damage to crankcase boring tool, it is important to replace the top center screw with a modified top center screw (1093). This screw is included in the Crankcase Boring Tool Kit (94419-06) and can be purchased separately from a Harley- Davidson dealer. 5. Install modified top center screw (1093) between the cylinders and tighten to 50-90 in-lbs (5.6-10.2 Nm). 6. See Figure 1 and Table 1. Machine crankcase cylinder spigot bore and O-ring counterbore to the dimensions shown. Modify Crankcase

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