Walker MT, MTL, MTEFI, MTLEFI Owner's Manual

Also see for MT, MTL, MTEFI, MTLEFI: Detailed instructions Owner's manual Owner's manual

Contents

Maintenance Instructions CLEANING67Cylinder Head Cooling FinsIt is essential for performance and longevity of theair-cooled 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, and feeling thecooling airflow. If there is little or no airflow, clean thecooling fins as described below.Every 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 op-erating the engine.Engine Air Intake Screenand Cooling Fin Access PanelsCooling System AirflowEngine Cooling System - MTLRadiator Screen and Cooling FinsTo prevent the engine from overheating and possi-ble engine damage, clean grass clippings, chaff,and dirt from the fine mesh radiator intake screendaily. In certain mowing conditions (dry grass,leaves, tree “cotton”, etc.), it may be necessary tocheck and clean the screen several times during useto prevent engine overheating.1. Remove the screen. To clean the screen, washwith soapy water or blow out with compressedair.2. Inspect the radiator cooling fins for materiallodged in this area which would restrict coolingairflow. Use pressurized air or water to clean.DO NOT use any tool, like a screwdriver orknife, to clean material out of the fins as thismay damage the cooling fins. DO NOT use coldwater on a hot radiator.NOTE: Directing pressurized air or water fromthe fan side of the radiator outward is recom-mended to dislodge material packed on the out-side of the cooling fins. DO NOT use cold wateron a hot radiator.DANGERMake sure to keep hands clear of exhaustpipe, muffler, and moving parts whenchecking airflow.Kohler EngineShroudEngine CoolingFin Access PanelsEngine AirIntake ScreenWARNINGRadiator and engine parts can become ex-tremely hot during operation. Wear glovesand avoid touching hot parts while clean-ing the radiator screen and cleaning de-bris away from the engine and coolingsystem.Check Airflowwith HandCylinderHead