Walker SB6670, DB6680, DB6660, RB6650, IH6620 KEY to Abbreviations Used in Illustrated Parts Manual

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KEY TO ABBREVIATIONS USED IN ILLUSTRATED PARTS MANUAL

Abbreviation	What it Represents

º (Dimension)	Degrees (Angle)
" (Dimension)	inches
cfm	cubic feet per minute
cl	centiliters
cm	centimeters
Dba	Decibels
DC	Direct Current
ESNA (Fastener)	Nylon Insert Locknut

fl. oz. ....................................................................................................................................... fluid ounces

FSC	Forward Speed Control
ft	feet
ft-lb	foot-pounds
GHS	Grass Handling System
GR (Fastener)	Grade
HP	Horse Power
ID	Identification or Inside Diameter
kg	kilograms
km/h or kph	kilometers per hour
kPa	kilopascals
lb	pounds
lbf	poundals or pounds force
LH	Left Hand (orientated with operator on seat)
m	meters
mm (Dimension)	millimeters
mph	miles per hour
N	Newtons
NC (Fastner)	National Coarse
NF (Fastner)	National Fine
NPT	National Pipe Thread
NS (as part number)	Item is not sold by Walker Manufacturing
N·m	Newton-meters
O/L	Obtain Locally (Item is not sold by Walker Manufacturing)
P/N	Part Number
PPHMS (Fastener)	Phillips Pan Head Machine Screw
PSI	Pounds Square Inch
PTO	Power Take-Off
RH	Right Hand (orientated with operator on seat)
RPM	revolutions per minute
SAE (Fastener)	Society of Automotive Engineers
SBH (Fastener)	Socket Button Head (Bolt)
S/N	Serial Number
U	Unified

NOTE: In some instances, combinations of abbreviations may be used (e.g. UNC - Unified National Coarse).

Use only genuine Walker® replacement parts.

Effective Date 06-01-01

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Contents Illustrated Parts Manual Foreword Table of Contents Implement Hitch Assembly Electrical Components Maintenance Schedule ChartTorque Specifications KEY to Abbreviations Used in Illustrated Parts ListIdentifying Number Locations General InformationGlossary Fill In By PurchaserSerial Number Serial Number Rotary Broom Serial Number LocationUnit Descriptions Dozer Blade SpecificationsImplement Hitch Rotary BroomTWO-STAGE Snowblower Debris Blower Implement Hitch Top View Not Installed Component IdentificationDozer Blade Rear View and Right Side View Not Installed Rotary Broom Rear View and Right Side View Not Installed TWO-STAGE Snowblower Two-Stage Snowblower Rear View Not Installed Debris Blower Front View and Left Side View Not Installed Debris Blower Rear View and Right Side View Not Installed Safety Instructions Before OperatingDo not operate with bystanders in the area Operating Maintenance SAFETY, CONTROL, and Instruction Decals PTO Shield Walker P/N Attaching Hitch Hitch Mount AdjustSAFETY, CONTROL, and Instruction Decals Implement Hitch Installation Assembly InstructionsSetup Instructions Implement Hitch Jam Nut AdjustmentAttach Wiring Harness and Toggle Switch Drill Holes for Implement Hitch WiringAttach Toggle Switch Mounting Bracket Connect Harness Wire to Circuit BreakerComplete Implement Hitch Wiring Implement Hitch Wiring Diagram Attach Spring to Blade Assembly Insert Adjustment Pin and Set Blade AngleInsert Female Hitch into Blade Attachment Install Skid Shoes Rotary Boom InstallationAttach Blade to Tractor Attach Broom to Implement Hitch Prepare Rotary Broom for InstallationAssemble Rotary Broom Driveline Connect Broom Driveline to Tractor PTO ShaftAdjust Brush to Ground Contact Lock Stopper Pin in PlaceGHS Blower Intake Cover Install Hand Guard on Chute Install Plastic Insert over Chute Base LipInstall Rotation Worm Assembly Install Chute over Plastic InsertInstall Skid Shoes Snowblower Installation Attach Drive Shaft Yoke to Reduction Shaft Install Bolt in Reduction BoxInstall Reduction Box Cover Mount Female Hitch to SnowblowerAttach Parallel Bar to Female Hitch Attach Snowblower to Implement HitchConnect Driveline Coupler to Tractor PTO Insert Rotation Handle into Rotation WormAttach Tractor PTO to Debris Blower Input Shaft Attach Debris Blower to Implement HitchRefer to Angle Adjustment Pin in Operating Refer to Hitch Locking Lever in Operating InstrucRefer to Angle Adjustment Lever in Operating Refer to Ground Contact Knob in OperatingOperating Instructions TWO-STAGE Snowblower ControlsTWO-STAGE Snowblower Operation Engaging the Snowblower PTO Clutch EngagedThrow Snow to Both Sides Clogging Checklist Throw Snow to One SideRaising and Lowering the Debris Blower Engaging the Debris Blower Stopping the MachineModel Service Item Daily Hours Maintenance InstructionsMaintenance procedures requiring special training or Tools should be performed by a trained technicianRotary Broom Gearbox with Cover Removed LubricationRotary Broom Gearbox Remove Chain Guard CoverRemove Reduction Box Cover Snowblower Lubricant Plug LocationTwo-Stage Snowblower Reduction Chain Grease Fitting and Oil Point LubricationLubrication Implement Hitch Lubrication Points Angle Adjustment Pin Oil Dozer Blade Lubrication Points Ident Rotary Broom Lubrication Points Location Type Two-Stage Snowblower Lubrication Points Ident Lubrication Location Type Debris Blower Lubrication Points REPLACING/REPAIRING Dozer Blade Cutting Edge Replacement Rotary Broom BrushSupport Rear of Broom Housing Remove Brush from Broom Housing Loosen Chain Idler and Set ScrewsReplace Rotary Broom Gearbox Rotary Broom Drive Chain Rotary Broom Drive Sprocket Remove Chain Guard Loosen Chain TensionReplace Drive Chain Sprocket WearCheck Sprocket Alignment with Chain Installed Remove and Replace SprocketAlign Sprockets Replace Snowblower Gearbox Reduction Sprocket Wear Replace Reduction ChainTwo-Stage Snowblower Reduction Sprocket Debris Blower Drive BeltAdjustments Dozer Blade Skid ShoesSkid Shoe Height Adjustment Rotary Broom Brush Leveling Side to Side Level Adjustment Rotary Broom Gauge WheelsGauge Wheel Height Adjustment Ance under the blade. On level, paved surfaces Loosen Chain Idler NutProper Drive Chain Tension Two-Stage Snowblower Skid Shoes Surface. On uneven or gravel surfaces, allow 1/2Proper Drive Belt Deflection Drive Belt Tension Adjustment Debris Blower Rotation Pinions Debris Blower Rotation Pinions Handle AdjustmentTorque Specifications Removal and Storage Instructions RemovalDetach Blade from Implement Hitch Detach Rotary Broom from Implement Hitch Detach Snowblower from Implement HitchDetach Implement Hitch from Tractor END of Season StorageRotary Broom Implement Hitch Assembly FastenersUse only genuine Walker replacement parts Implement Hitch Electrical Components Implement Hitch Electrical Components FastenersRAD Technologies Inc Implement Hitch Electrical Components Dozer Blade Assembly Dozer Blade Assembly Rotary Broom Assembly Rotary Broom AssemblyKit I391 Side Caster Wheels Kit Rotary Broom Assembly Gearbox Assembly Driveline and Sprockets Assembly FastenersRotary Broom Drive Components Rotary Broom Drive Components Snowblower Mount Assembly Snowblower Housing ComponentsChute Rotation Assembly Reduction Box AssemblySnowblower Housing Components Snowblower Drive Components Driveline and Auger ComponentsSnowblower Drive Components Debris Blower Components Debris Blower ComponentsDebris Blower Components Debris Blower Manual Rotation Components Debris Blower Manual Rotation ComponentsDebris Blower Manual Rotation Components KEY to Abbreviations Used in Illustrated Parts Manual Limited Warranty For Walker Commercial Rider Mower Walker MFG. CO E. Harmony ROAD, Fort COLLINS, CO 80528 970