Air Intake Restriction (010-031)
B3.9 and B5.9 Series Engines
Section 10 - Air Intake System - Group 10
Operate the engine at full throttle and rated rpm with maxi-
Record the data on the gauge or manometer.
Inlet Air Restriction
NOTE: The illustration shows the measurement in centi-
meters instead of millimeters.
If restriction exceeds specifications:
Replace or clean the air filter element. Refer to the
equipment manufacturer's instructions.
Inspect the intake piping for damage. Refer to the
equipment manufacturer's repair instructions.
Remove the test equipment.