Walker MS Operator's Manual

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Maintenance Instructions CLEANING51Air IndicatorRestriction GaugePush Button to ResetIndicator After ServiceAir Filter Restriction Gauge LocationInspect the paper element after every 100 hours ofservice and replace the element and safety filteryearly (or when dirty or damaged). More frequentreplacement may be required when operating in ex-tremely dusty conditions as indicated by the air re-striction gauge. Service the air cleaner as follows:1. Release the top and bottom cover latches andremove the air cleaner cover. Wash the coverand dust ejection valve. Check that these com-ponents are in good condition. The dust ejec-tion valve is subject to wear and deteriorationand should be replaced yearly or when dam-aged. The lips of the valve should close and fittogether; any cracks, deformation, or wear inthe valve is cause for replacement.2. Remove the filter element by pulling it out of thecanister. There will be some initial resistanceas the filter seal breaks loose and slides off ofthe outlet tube. Gently move the end of thefilter up and down and side to side or twist toloosen the seal. Use gentle action to minimizethe amount of dust dislodged as the filter is re-moved.3. Replace filter element.NOTE: Washing the element in water or clean-ing solution is not recommended. Do not try toclean the element with compressed air.4. Use a bright light inside the element to inspectfor damage. Check the element very carefullyfor pin holes or other damage that will allowdirt to leak through the paper media. Replaceelement if necessary.5. Without removing, visually inspect the conditionof the safety filter for damage or holes. Thesafety filter should only be removed for yearlyreplacement (or when dirty or damaged).6. Check the condition and resilience of the radialsealing surface (inside of the open end) of thefilter. Replace the filter if any cracks, tears, orother damage to the sealing surface are noted.7. Use a clean, damp cloth and wipe the interior ofthe air cleaner canister clean. Use special careto clean both the inside and outside surfacesof the outlet tube.IMPORTANT: Any dust left on the inside of theoutlet tube will go into the engine and causewear.8. Check the outside surface of the outlet tube forsmoothness and cleanness (this is the sealingsurface).9. Insert and seat the safety filter and primary ele-ment carefully into the canister, applying pres-sure at the outer rim of the filter; not at the flex-ible center. Make sure the filter element iscompletely in place before installing the cover.IMPORTANT: DO NOT use the cover latchesto force the filter into the canister -- the covershould fit on with no extra force.NOTE: DO NOT use petroleum based lubri-cants on the sealing surfaces of the filter; usetalcum powder or dry silicone lubricants if re-quired for filter installation.