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1.9
Section 1
Safety and General Information
1
Camshaft
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....................................................................................................... 20.000/20.025 mm (0.7874/0.7884 in.)
Max. Wear Limit .................................................................................... 20.038 mm (0.7889 in.)
Camshaft Bearing Surface O.D.
New....................................................................................................... 19.962/19.975 mm (0.7859/0.7864 in.)
Max. Wear Limit .................................................................................... 19.959 mm (0.7858 in.)
Carburetor and Intake Manifold
Intake Manifold Mounting Fastener Torque
Torque in Two Stages ............................................................................ initially to 7.4 N·m (66 in. lb.)
finally to 9.9 N·m (88 in. lb.)
Carburetor Mounting Screw Torque M6 ....................................................... 6.2-7.3 N·m (55-65 in. lb.)
Adapter (for Heavy Duty Air Cleaner) Mounting Fastener Torque ................ 7.3 N·m (65 in. lb.)
Connecting Rod
Cap Fastener Torque (torque in increments)
8 mm straight shank.............................................................................. 22.7 N·m (200 in. lb.)
8 mm step-down ................................................................................... 14.7 N·m (130 in. lb.)
6 mm straight shank.............................................................................. 11.3 N·m (100 in. lb.)
Connecting Rod-to-Crankpin Running Clearance
New....................................................................................................... 0.030/0.055 mm (0.0012/0.0022 in.)
Max. Wear Limit .................................................................................... 0.070 mm (0.0028 in.)
Connecting Rod-to-Crankpin Side Clearance .............................................. 0.26/0.63 mm (0.0102/0.0248 in.)
Connecting Rod-to-Piston Pin Running Clearance ...................................... 0.015/0.028 mm (0.0006/0.0011 in.)
Piston Pin End I.D.
New....................................................................................................... 17.015/17.023 mm (0.6699/0.6702 in.)
Max. Wear Limit .................................................................................... 17.036 mm (0.6707 in.)
Crankcase
Governor Cross Shaft Bore I.D.
6 mm Shaft
New ................................................................................................... 6.025/6.050 mm (0.2372/0.2382 in.)
Max. Wear Limit................................................................................. 6.063 mm (0.2387 in.)
8 mm Shaft
New ................................................................................................... 8.025/8.075 mm (0.3159/0.3179 in.)
Max. Wear Limit................................................................................. 8.088 mm (0.3184 in.)
Breather Cover Fastener Torque ................................................................. 7.3 N·m (65 in. lb.)
Oil Drain Plug Torque ................................................................................... 13.6 N·m (10 ft. lb.)