MAINTENANCE Dusty work sites: When working at dusty work sites, do as follows: Inspect the air cleaner clogging pilot lamp to see whether the air cleaner is plugged up. Clean the air cleaner at shorter intervals than specified. Clean the radiator core frequently to avoid clogging. Clean and replace the fuel filter frequently. Clean electrical components, especially the starting motor and alternator, to avoid accumulation of dust. Avoid mixing oils: Never mix oils of different brands. If the only oil you have is a different brand from the one that is used in the machine, do not add it in but replace all the oil. 3-4 WA320-3MC