Walker H27i Operator's Manual

Also see for H27i: Operator's manual Operator's manual

56Maintenance Instructions CLEANINGRotating Engine CoolingAir Intake ScreenKeep Rotating Engine CoolingAir Intake Screen CleanCylinder Head Cooling FinsIt is essential for performance and longevity of theaircooled engine to keep the cylinder head coolingfins clean and free of obstruction. After every 8hours of operation, check the performance of thecooling system by starting the engine, holding ahand adjacent to the cylinder head(s), and feelingthe cooling airflow. If there is little or no airflow, cleanthe cooling fins as follows:DANGERMake sure to keep hands clear of exhaustpipe, muffler, and moving parts whenchecking airflow.Check Airflowwith HandCylinderHeadCheck Cooling System AirflowEvery 100 hours, inspect and clean the cooling fins(more often when operating in extremely dusty, dirtyconditions). Remove the two (2) cooling fin accesspanels in the engine shroud and clean the coolingfins and external surfaces using compressed air.Make sure to reinstall the access panels before oper ating the engine.CAUTIONDO NOT use a pressure washer to cleanthe cooling system on an air-cooled en-gine, mud may form under the coolingshroud on the cylinder head and coolingfan.NOTE: If dirt is packed into the cooling fins it maybe necessary to remove the engine shroud in orderto thoroughly clean the cooling fins.Kohler EngineShroudRotating Engine CoolingAir Intake ScreenEngine CoolingFin Access PanelsRotating Engine Cooling Air Intake Screenand Cooling Fin Access PanelsIMPORTANT: Yearly, it is good maintenance practice to remove the engine cooling shroud and cleanthe cylinder head cooling fins thoroughly to preventoverheating and extend engine life. Make sure cooling shroud is reinstalled properly. This procedurewill require removing the engine from the chassis.