Engine Service Manual

13
Specifi cations
17 690 01 Rev. F KohlerEngines.com
TORQUE SPECIFICATIONS
3,5
CH260/CH270 CH395 CH440
Rocker Arm
Stud 13.6 N·m (120 in. lb.)
Pivot Jam Nut 10 N·m (89 in. lb.)
Valve Cover
Fastener 10 N·m (89 in. lb.)
CLEARANCE SPECIFICATIONS
3
CH260/CH270 CH395 CH440
Camshaft
Running Clearance 0.007/0.043 mm
(0.0003/0.0017 in.)
0.016/0.052 mm
(0.0006/0.0020 in.)
Bore I.D.
New 14.000/14.018 mm
(0.5512/0.5519 in.)
16.000/16.018 mm (0.6299/0.6306 in.)
Max. Wear Limit 14.018 mm
(0.5519 in.)
16.068 mm (0.6326 in.)
Camshaft Bearing Surface O.D.
New 13.975 mm
(0.5502 in.)
15.975 mm (0.6289 in.)
Max. Wear Limit 13.90 mm
(0.547 in.)
15.90 mm (0.626 in.)
Cam Lobe Profi le (minimum dimension, measured from
base circle to top of lobe)
Intake - New 27.787 mm
(1.094 in.)
32.408 mm
(1.276 in.)
32.286 mm
(1.271 in.)
Max. Wear Limit 27.533 mm
(1.084 in.)
32.154 mm
(1.266 in.)
32.032 mm
(1.261 in.)
Exhaust - New 27.861 mm
(1.097 in.)
32.12 mm
(1.265 in.)
32.506 mm
(1.280 in.)
Max. Wear Limit 27.607 mm
(1.087 in.)
31.866 mm
(1.255 in.)
32.252 mm
(1.270 in.)
Connecting Rod
Crankpin End I.D. @ 21°C (70°F)
New 30.020/30.030 mm
(1.1819/1.1823 in.)
33.020/33.030 mm
(1.3000/1.3004 in.)
37.020/37.030 mm
(1.4575/1.4579 in.)
Max. Wear Limit 30.106 mm
(1.185 in.)
33.07 mm
(1.302 in.)
37.08 mm
(1.460 in.)
Connecting Rod-to-Crankpin Side Clearance
New 0.58/0.60 mm
(0.023/0.024 in.)
0.73 mm
(0.029 in.)
0.56 mm
(0.022 in.)
Max. Wear Limit 1.10 mm
(0.043 in.)
1.36 mm
(0.054 in.)
1.06 mm
(0.042 in.)
Connecting Rod-to-Piston Pin Running Clearance 0.008/0.025 mm
(0.0003/0.0010 in.)
0.006/0.028 mm
(0.0002/0.0011 in.)
0.008/0.025 mm
(0.0003/0.0010 in.)
Piston Pin End I.D. @ 21°C (70°F)
New 18.006/18.017 mm
(0.7089/0.7093 in.)
20.006/20.017 mm
(0.7876/0.7881 in.)
Max. Wear Limit 18.08 mm (0.712 in.) 20.03 mm
(0.789 in.)
3
Values are in Metric units. Values in parentheses are English equivalents.