1.12
Section 1
Safety and General Information
Oil Cooler
Oil Cooler/Adapter Nipple Torque .........................................................................28.5 N·m (21 . lb.)
Oil Cooler Fastener Torque
Top Fastener .........................................................................................................2.8 N·m (25 in. lb.)
Bo om Fastener ...................................................................................................2.3 N·m (20 in. lb.)
Piston, Piston Rings, and Piston Pin
Piston-to-Piston Pin Running Clearance ................................................................0.006/0.017 mm (0.0002/0.0007 in.)
Piston Pin Bore I.D.
New .......................................................................................................................17.006/17.012 mm (0.6695/0.6698 in.)
Max. Wear Limit ..................................................................................................17.025 mm (0.6703 in.)
Piston Pin O.D.
New .......................................................................................................................16.995/17.000 mm (0.6691/0.6693 in.)
Max. Wear Limit ..................................................................................................16.994 mm (0.6691 in.)
Top Compression Ring-to-Groove Side Clearance ...............................................0.050/0.095 mm (0.0019/0.0037 in.)
Middle Compression Ring-to-Groove Side Clearance .........................................0.030/0.075 mm (0.0012/0.0030 in.)
Oil Control Ring-to-Groove Side Clearance ...........................................................0.010/0.011 mm (0.0004/0.0043 in.)
Top and Middle Compression Ring End Gap
New Bore .............................................................................................................0.025/0.56 mm (0.010/0.022 in.)
Used Bore (Max.) - ECV630,ECV650,ECV680 .................................................0.080 mm (0.0315 in.)
Used Bore (Max.) - ECV730,ECV740,ECV749 .................................................0.094 mm (0.0370 in.)
Piston Thrust Face O.D.²
ECV630,ECV650,ECV680 ...................................................................................79.962/79.980 mm (3.1481/3.1488 in.)
ECV730,ECV740,ECV749 ...................................................................................82.949/82.967 mm (3.2657/3.2664 in.)
Max. Wear Limit - ECV630,ECV650,ECV680 ..................................................79.831 mm (3.1430 in.)
Max. Wear Limit - ECV730,ECV740,ECV749 ..................................................82.818 mm (3.2606 in.)
Piston Thrust Face-to-Cylinder Bore² Running Clearance
New - ECV630,ECV650,ECV680 .......................................................................0.020/0.063 mm (0.0008/0.0024 in.)
New - ECV730,ECV740,ECV749 .......................................................................0.0039/0.082 mm (0.0015/0.0032 in.)
Speed Control Bracket (Assembled to Cylinder Heads)
Fastener Torque ..........................................................................................................10.7 N·m (95 in. lb.) into new holes
7.3 N·m (65 in. lb.) into used holes
Speed Control Bracket (Assembled to Blower Housing)
Fastener Torque ..........................................................................................................2.8 N·m (25 in. lb.) into new holes
2.3 N·m (20 in. lb.) into used holes
Starter Assembly
Thru Bolt Torque ........................................................................................................5.6-9.0 N·m (49-79 in. lb.)
Mounting Screw Torque (All)...................................................................................16.0 N·m (142 in. lb.)
Brush Holder Mounting Screw Torque...................................................................2.5-3.3 N·m (22-29 in. lb.)
² Measure 6 mm (0.236 in.) above the bo om of the piston skirt at right angles to the piston pin.
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