Walker S14 manual Using the Tilt-UpDeck, Using the GHS Catcher, Powerfil, “Full” Signal Horn

Operating Instructions

•Check the blower wheel for bent blades and excessive clearance between the blade tip and the blower housing. A clearance greater than

1/8 in. (3 mm) will cause a significant loss of blower performance.

•Check the blower discharge chute into the grass catcher for smoothness and freedom from ob­ struction.

•Check the elbow inside the grass catcher for a buildup of material in the radius of the elbow. In certain conditions (damp/dirty grass) a considerable “clump” of material can accumulate at this point, greatly restricting material and airflow.

•Check that the openings in the removable air exhaust screen in the grass catcher are not plugged. If the screen is clogged, refer to Cleaning the GHS Exhaust Screen in this section.

NOTE: An optional exhaust screen with larger holes (3/4”) is available for use when mowing in wet grass; the screen provides less airflow restriction and more clog resistance (use standard screen in dry conditions to avoid excessive material blowing out of the catcher).

Remember, anything that restricts airflow or mate- rial flow along the entire path from the mower deck to the grass catcher can cause clogging.

Using the Tilt-Up Deck

Refer to CLEANING of Grass Buildup in Mower Deck Housing in Maintenance Instructions.

Using the GHS Catcher

Powerfil ®

The GHS catcher has an oscillating grass delivery spout (POWERFIL®) which is designed to spread grass clippings throughout the interior of the grass catcher (even when mowing wet, heavy grass). The oscillating action may be checked by turning the igni- tion switch to the ON (RUN) position and moving the blade clutch to the ENGAGED position. The spout should oscillate approximately 35 cycles per minute.

NOTE: If the grass spout fails to oscillate, the clutch switch should be checked for function.

“Full” Signal Horn

The GHS catcher has a “full” signal horn to alert the operator to dump the catcher when it is full (to prevent overfilling and clogging). The “full” signal horn 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 as grass begins to fill in around the spout when the catcher is almost full.

The “full” signal function may be checked by turning the ignition switch ON (RUN), engaging the blade clutch (engine not running), opening the catcher back door, and triggering the Grass-Pak®vane by hand as it oscillates. The horn should sound as the switch is moved in one direction.

WARNING

DO NOT test the Powerfil® oscillation or Grass-Pak®switch with the engine run- ning. Projectiles may be thrown out of the grass delivery spout, and COULD cause serious injury.

The “full” signal horn is designed to operate (sound) when the grass catcher is almost full. The timing of the signal is adjustable by changing the position of the vane on the Grass-Pak®switch. If the signal is coming on too soon (catcher not completely full) or too late (grass clogging in catcher spout and deliv­ery chute), refer to ADJUSTMENTS for GHS “Full” Signal Horn Adjustment in Maintenance In­ structions.

NOTE: The horn signal should be adjusted to sound BEFORE the catcher is completely full to give the operator time to react and stop mowing. An indication the horn signal is coming on too late (de­ layed too much) is if grass clippings are falling out of the grass catcher delivery chute when the catcher is dumped.

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