1.7
Section 1
Safety and General Information
1
General Specifications
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Power (@ 3600 RPM, exceeds SAE J1940 HP standards)
CH11 .......................................................................................................... 8.20 kW (11 HP)
CH12.5 ....................................................................................................... 9.33 kW (12.5 HP)
CH13 .......................................................................................................... 9.75 kW (13 HP)
CH14 .......................................................................................................... 10.50 kW (14 HP)
CH15 .......................................................................................................... 11.20 kW (15 HP)
CH16 .......................................................................................................... 11.90 kW (16 HP)
Peak Torque (@ RPM indicated)
CH11 (@ 2400 RPM) ................................................................................. 26.7 N·m (19.7 ft. lb)
CH12.5 (@ 2500 RPM) .............................................................................. 27.8 N·m (20.5 ft. lb)
CH13 (@ 2400 RPM) ................................................................................. 28.8 N·m (21.2 ft. lb)
CH14 (@ 2500 RPM) ................................................................................. 27.8 N·m (21.3 ft. lb)
CH15 (@ 2400 RPM) ................................................................................. 34.3 N·m (25.3 ft. lb)
CH16 (@ 2400 RPM) ................................................................................. 33.9 N·m (25.0 ft. lb)
Bore
CH11, CH12.5, CH13, CH14 .................................................................... 87 mm (3.43 in.)
CH15, CH16 .............................................................................................. 90 mm (3.54 in.)
Stroke ................................................................................................................ 67 mm (2.64 in.)
Displacement
CH11, CH12.5, CH13, CH14 .................................................................... 398 cc (24.3 cu. in.³)
CH15, CH16 .............................................................................................. 426 cc (26.0 cu. in.³)
Compression Ratio ......................................................................................... 8.5:1
Weight .............................................................................................................. 40 kg (88.3 lb.)
Max. Oil Capacity (w/filter) .......................................................................... 1.9 L (2.0 qt.)
Lubrication ...................................................................................................... full pressure w/full flow filter
Air Cleaner
Base Nut Torque .............................................................................................. 9.9 N·m (88 in. lb.)
Angle of Operation - Maximum (at full oil level)
Intermittent - All Directions ......................................................................... 35°
Continuous - All Directions .......................................................................... 25°
Balance Shaft
End Play (Free) ................................................................................................ 0.0575/0.3625 mm (0.0023/0.0137 in.)
Running Clearance ......................................................................................... 0.025/0.1520 mm (0.0009/0.0059 in.)
Bore I.D.
New ........................................................................................................... 20.000/20.025 mm (0.7874/0.7884 in.)
Max. Wear Limit ...................................................................................... 20.038 mm (0.7889 in.)
Balance Shaft Bearing Surface O.D.
New ........................................................................................................... 19.962/19.975 mm (0.7859/0.7864 in.)
Max. Wear Limit ...................................................................................... 19.959 mm (0.7858 in.)
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Values are in Metric units. Values in parentheses are English equivalents. Lubricate threads with engine oil prior to
assembly.
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