Walker MT Owner's Manual

Contents

Operating Instructions40• Check that the openings in the removable airexhaust screen in the grass catcher are notplugged. If the screen is clogged, refer to Cleaningthe GHS Exhaust Screen in this section.Remember, anything that restricts airflow or materialflow along the entire path from the mower deck tothe grass catcher can cause clogging.Using the Tilt-Up DeckRefer to CLEANING of Grass Buildup in MowerHousing forTilt-Up Decks in MaintenanceInstructions.Using the GHS CatcherPowerfil ®The GHS catcher has an oscillating grass deliveryspout (POWERFIL®) which is designed to spreadgrass clippings throughout the interior of the grasscatcher (even when mowing wet, heavy grass). Theoscillating action may be checked by turning theignition switch to the ON position and moving theblade clutch to the ENGAGED position. The spoutshould oscillate approximately 25 cycles perminute.NOTE: If the grass spout fails to oscillate, the clutchswitch should be checked for function (the switchclosure is adjustable).“Full” Signal HornThe GHS catcher has a “full” signal horn to alertthe operator to dump the catcher when it is full (toprevent overfilling and clogging). The “full” signalhorn is activated by a vane switch (Grass-Pak ®switch) mounted on the grass delivery spout. Oscil-lating action of the spout triggers the vane switch asgrass begins to fill in around the spout when thecatcher is almost full.The “full” signal function may be checked by turningthe ignition switch ON, engaging the blade clutch(engine not running), opening the catcher back door,and triggering the Grass-Pak ® vane by hand as itoscillates. The horn should sound as the switch ismoved in both directions.The “full” signal horn is designed to operate (sound)when the grass catcher is almost full. The timing ofthe signal is adjustable by changing the position ofthe vane on the Grass-Pak ® switch. If the signal iscoming on too soon (catcher not completely full) ortoo late (grass clogging in catcher spout and deliv-ery chute), refer to ADJUSTMENTS of GHS “Full”Signal Horn in Maintenance Instructions.NOTE: The horn signal should be adjusted tosound BEFORE the catcher is completely full togive the operator time to react and stop mowing. Anindication the horn signal is coming on too late (de-layed too much) is if grass clippings are falling out ofthe grass catcher delivery chute when the catcher isdumped.Cleaning the GHS Exhaust ScreenTo remove the grass catcher screen for cleaning,open the catcher door, push forward and pull downon the grass catcher screen knobs (on either side ofthe screen), and slide the screen out. Use a highpressure washer or water spray and brush to cleanthe screen.Keeping the catcher exhaust screen clean and openis essential to good performance of the catchingsystem. In some mowing conditions, e.g., wet anddirty, it will be necessary to clean the screen fre-quently to avoid clogging the mower deck, blower,and chutes due to airflow restriction.Grass Catcher Screen Removal for CleaningWARNINGDO NOT test the Grass-Pak ® switch withthe engine running. Projectiles may bethrown out of the grass delivery spout,and COULD cause serious injury.Grass CatcherScreenRemovalKnobs