59Maintenance Instructions REPLACING/REPAIRINGFuel FilterDANGERGasoline is extremely flammable and canbe highly explosive. To minimize danger:• Before servicing the fuel system:1) Disconnect the spark plug leads.2) Disconnect the negative (-) battery ca-ble from battery.• Use only an approved fuel container forgasoline.• DO NOT allow open flames or sparksnear the machine while performing main-tenance or refueling; DO NOT smokewhile working with fuel.• Wipe up spilled gasoline immediatelyand completely.Model MBK23 is equipped with a 10 micron in-linefuel filter between the fuel tank and the fuel pumpmodule. Replacement of this filter is recommendedevery 200 hours of operation or more frequentlyunder extremely dusty or dirty conditions.In-LineFuel FilterFuel Filter LocationIMPORTANT: Replace the fuel filter only in a cleanarea where the fuel line and connections will not becontaminated by any dust and dirt.1. Expand and slide clamps on either side of thefilter away from filter and pull fuel lines off filter.2. Replace filter, making sure that the arrow on thefilter is aligned with the fuel flow through thefilter.3. Verify that the fuel lines and clamps are secure-ly attached, and that no fuel leaks are present.