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WALKER MANUFACTURING COMPANY
July 2006
SERVICE INSTRUCTIONS
GHS Blower - Model MS, MC, MD, MT
Normally, the GHS blower operates with no mainte-
nance or cleaning. However, when mowing grass that
is dirty and damp (especially springtime mowing), a
deposit of dirt may accumulate inside the blower hous-
ing, causing wear and binding of the blower wheel.
When operating in these conditions, inspect the blow-
er frequently for dirt buildup.
NOTE: A visual clue of binding of the blower wheel is
the blower blade tips are polished from rubbing on
dirt.
When a dirt deposit is found, use a high pressure wash-
er or water spray to clean the inside of the housing as
follows:
Model MS, MC, MT
Model MD
Model MC, MD, MT
1. Remove the GHS blower drive belt tension by de-
pressing the idler pulley on the tightener arm. Roll
the belt off the blower pulley. The belt should be
clear of the blower pulley, allowing free movement
of the blower wheel.
Model MS
1. Remove the PTO drive belt from the GHS blower
pulley as follows: Move the blade clutch (in direc-
tion of engagement) far enough to relax the belt
scrubber brake without tightening the PTO drive
belt. Roll the belt off of the blower pulley, then
move blade clutch to full “engagement” position.
Both the drive belt and scrubber brake bar should
be clear of blower pulley, allowing free movement
of the blower wheel.
Model MS, MC, MD, MT
IMPORTANT: With the belt removed, the blower
wheel must spin freely. Any binding or dragging of
the wheel is an indication of dirt buildup. This
buildup must be cleaned to avoid abrasive wear
of the blower blades, excessive power loss and
eventual loss of blower performance (clogging).
2. Use a pressure washer or water spray, and direct
the spray inside the blower housing against the
blower blades. Water pressure will cause the
blower wheel to begin to spin and the combination
of spinning action and water will effectively wash
the inside of the housing. Spray may be directed
against the blower blades vertically and horizontal-
ly to cause rotation in both directions for thorough
washing action. Wash blower until the blower
wheel spins freely in both directions.
Model MC, MD, MT
3. Reinstall the GHS blower drive belt by reversing
the removal procedure.
Collapse Blower Belt Tightener to Remove
GHS Blower Drive Belt - Model MC, MD, MT
DANGER
Before attempting to wash the blower,
stop the engine, remove the ignition key,
and disconnect the spark plug wire(s).
DANGER
Before attempting to wash the blower,
stop the engine, remove the ignition key,
and electrical plug on the fuel shut-off so-
lenoid.
Blower
Pulley
Blower
Drive Pulley
Depress Idler Pulley
Down to Relax Belt
GHS Blower
Drive Belt
Belt Tightener
Idler Pulley
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