Specifi cations TORQUE SPECIFICATIONS 3,5 LH630 LH640 LH685 LH690 LH750 LH755 Electric Starter Fan/Flywheel Governor Ignition Muffl er Speed Control Stator Valve Cover/Rocker Arms Water Pump CLEARANCE SPECIFICATIONS 3 LH630 LH640 LH685 LH690 LH750 LH755 Camshaft 3 Values are in Metric units. Values in parentheses are English equivalents. 5 Lubricate threads with engine oil prior to assembly. 66 690 01 Rev. C KohlerEngines.com 7 Starter Thru Bolt 5.6-9.0 N·m (49-79 in. lb.) Starter Mounting Screw 15.3 N·m (135 in. lb.) Starter Brush Holder Fastener 2.5-3.3 N·m (22-29 in. lb.) Starter Solenoid Fastener 4.0-6.0 N·m (35-53 in.
lb.) Starter Solenoid Positive (+) Brush Lead Retaining Nut 8.0-11.0 N·m (71-97 in. lb.) Rear Fan Shaft to Mounting Bracket Nut 15.8 N·m (140 in. lb.) Front Fan Assembly to Fan Shaft Nut 15.8 N·m (140 in. lb.) Fan/Pulley/Hub Assembly Fastener 6.8 N·m (60 in. lb.) Flywheel Retaining Screw 66.4 N·m (49 ft . lb.) Lower Flywheel Cover Mounting Screw into hex or weld nuts 9.9 N·m (88 in. lb.) into Timmerman clips/nuts 2.2-2.8 N·m (20-25 in. lb.) Lower Pulley Mounting Screw 24.3 N·m (215 in. lb.) Governor Lever Nut 6.8 N·m (60 in. lb.) Spark Plug 27 N·m (20 ft. lb.) Ignition Module Fastener 6.2 N·m (55 in. lb.) into new hole 4.0 N·m (35 in.
lb.) into used hole Rectifi er-Regulator Fastener 4.0 N·m (35 in. lb.) Muffl er Retaining Nuts 24.4 N·m (216 in. lb.) Speed Control Bracket Assembly Fastener 10.7 N·m (95 in. lb.) into new holes 7.3 N·m (65 in. lb.) into used holes Stator Mounting Screw 6.2 N·m (55 in. lb.) Valve Cover Fastener 6.2 N·m (55 in. lb.) Mounting Screw 9.9 N·m (88 in. lb.) Pulley Mounting Screw 9.9 N·m (88 in. lb.) End Play (with shim) 0.076/0.127 mm (0.0030/0.0050 in.) Running Clearance 0.025/0.063 mm (0.0010/0.0025 in.) Bore I.D. New Max. Wear Limit 20.000/20.025 mm (0.7874/0.7884 in.) 20.038 mm (0.7889 in.) Camshaft Bearing Surface O.D. New Max.
Wear Limit 19.962/19.975 mm (0.7859/0.7864 in.) 19.959 mm (0.7858 in.)