1.13
Section 1
Safety and General Information
1
Blower Housing and Sheet Metal
M6 Shoulder Screw Torque ........................................................................... 10 N·m (89 in. lb.)
M6 Nut Torque ................................................................................................ 8.0 N·m (71 in. lb.)
Camshaft
Running Clearance
CH270 ........................................................................................................ 0.007/0.043 mm (0.0003/0.0017 in.)
CH395,CH440 ........................................................................................... 0.016/0.052 mm (0.0006/0.0020 in.)
Bore I.D.
New
CH270 ................................................................................................. 13.991/14.009 mm (0.5508/0.5515 in.)
CH395,CH440 .................................................................................... 16.000/16.018 mm (0.6300/0.6310 in.)
Max. Wear Limit
CH270 ................................................................................................. 14.018 mm (0.5519 in.)
CH395,CH440 .................................................................................... 16.068 mm (0.6289 in.)
Camsha Bearing Surface O.D.
New
CH270 ................................................................................................. 13.975 mm (0.55 in.)
CH395,CH440 .................................................................................... 15.975 mm (0.63 in.)
Max. Wear Limit
CH270 ................................................................................................. 13.90 mm (0.547 in.)
CH395,CH440 .................................................................................... 15.90 mm (0.626 in.)
Cam Lobe Profi le (Minimum Dimension, Measured From Base Circle To Top Of Lobe)
Intake (New)
CH270 ................................................................................................. 31.966 mm (1.259 in.)
CH395 ................................................................................................. 32.544 mm (1.281 in.)
CH440
.................................................................................................
.................................................................................................
33.266 mm (1.310 in.)
Exhaust (New)
CH270 ................................................................................................. 31.966 mm (1.259 in.)
CH395 ................................................................................................. 32.256 mm (1.270 in.)
CH440 ................................................................................................. 32.642 mm (1.285 in.)
Intake (Wear Limit)
CH270 ................................................................................................. 31.72 mm (1.249 in.)
CH395 ................................................................................................. 32.11 mm (1.264 in.)
CH440 ................................................................................................. 32.26 mm (1.270 in.)
Exhaust (Wear Limit)
CH270 ................................................................................................. 31.72 mm (1.249 in.)
CH395 ................................................................................................. 31.79 mm (1.252 in.)
CH440 ................................................................................................. 31.61 mm (1.245 in.)
Carburetor
Carburetor Stud Torque ................................................................................. 10 N·m (89 in. lb.)
Carburetor Primary Nut Torque ................................................................... 8 N·m (71 in. lb.)
Intake Cover Nut Torque ............................................................................... 4 N·m (35 in. lb.)
Intake Cover Screw Torque............................................................................ 1.3 N·m (12 in. lb.)
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