Scag Power Equipment WALK-BEHIND SWZ-19KAI User manual

PART NO. 03226 Rev. 2
PRINTED 1/2009
PRINTED IN USA
© 2009
Scag Power Equipment
Division of Metalcraft of Mayville, Inc.
Congratulations on owning a Scag mower! This manual contains the operating
instructions and safety information for your Scag mower. Reading this manual
can provide you with assistance in maintenance and adjustment procedures to
keep your mower performing to maximum efciency. The specic models that
this book covers are listed on the inside cover. Before operating your machine,
please read all the information enclosed.
SWZ
Walk-Behind
Model: SWZ36A-16KAI
SWZ36A-17KAI
SWZ48V-17KAI
SWZ52V-17KAI
SWZ52V-19KAI
SWZ-19KAI
SWZ-21KAE
OPERATOR’S
MANUAL

WARNING
FAILURETO FOLLOW SAFE OPERATING PRACTICES MAY RESULT
IN SERIOUS INJURY OR DEATH.
Read this manual completely as well as other manuals that came with your mower.•
ALWAYS FOLLOW OSHA APPROVED OPERATION.•
DO NOT operate on steep slopes.•
Always travel across slopes.•
DO NOT mow on wet grass.Wet grass reduces traction and steering control.•
Keep all shields in place, especially the grass discharge chute.•
Before performing any maintenance or service, stop the machine and remove the• spark plug wire and ignition key.
If a mechanism becomes clogged, stop the engine before cleaning.•
Keep hands, feet and clothing away from power-driven parts.•
Keep others off the mow• er (only one person at a time)
REMEMBER -YOUR MOWER IS ONLY AS SAFE ASTHE OPERATOR!
HAZARD CONTROL AND ACCIDENT PREVENTION ARE DEPENDENT UPON THE AWARENESS,
CONCERN, PRUDENCE, AND PROPER TRAINING OF THE PERSONNEL INVOLVED IN THE
OPERATION,TRANSPORT, MAINTENANCE, AND STORAGE OFTHE EQUIPMENT.
This manual covers the operating instructions and illustrated parts list for:
SWZ36A-16KAI with a serial number of D4500001 to D4599999
SWZ36A-17KAI with a serial number of E6100001 to E6199999
SWZ48V-17KAI with a serial number of D4600001 to D4699999
SWZ52V-17KAI with a serial number of D4700001 to D4799999
SWZ52V-19KAI with a serial number of D4800001 to D4899999
SWZ-19KAI with a serial number of D5100001 to D5199999
SWZ-21KAE with a serial number of D5200001 to D5299999
SWM-52V with a serial number of D5400001 to D5499999
SWM-61V with a serial number of D5500001 to D5599999
Always use the entire serial number listed on the serial number tag when referring to this product.

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Table of Contents
Table of Contents
GENERAL INFORMATIONSECTION 1 - ...................................................................................1
1.1 INTRODUCTION...........................................................................................................................................1
1.2 DIRECTION REFERENCE...........................................................................................................................1
1.3 SERVICINGTHE ENGINE AND DRIVETRAIN COMPONENTS.................................................................1
1.4 SYMBOLS ....................................................................................................................................................2
SAFETY INFORMATIONSECTION 2 - ......................................................................................3
2.1 INTRODUCTION...........................................................................................................................................3
2.2 SIGNALWORDS..........................................................................................................................................3
2.3 BEFORE OPERATION CONSIDERATIONS................................................................................................3
2.4 OPERATION CONSIDERATIONS................................................................................................................4
2.5 MAINTENANCE CONSIDERATIONS & STORAGE....................................................................................5
2.6 USING A SPARK ARRESTOR.....................................................................................................................6
2.7 SAFETY AND INSTRUCTIONAL DECALS.................................................................................................7
SPECIFICATIONSSECTION 3 - ................................................................................................8
3.1 ENGINE ........................................................................................................................................................8
3.2 ELECTRICAL ...............................................................................................................................................8
3.3 ENGINE DECK.............................................................................................................................................8
3.4 CUTTER DECK ............................................................................................................................................9
3.5WEIGHTS AND DIMENSIONS.....................................................................................................................9
3.6 PRODUCTIVITY ...........................................................................................................................................9
OPERATING INSTRUCTIONSSECTION 4 - ...........................................................................10
4.1 CONTROLS AND INSTRUMENT IDENTIFICATION ................................................................................10
4.2 SAFETY INTERLOCK SYSTEM................................................................................................................11
4.3 INITIAL RUN-IN PROCEDURES................................................................................................................11
4.4 STARTINGTHE ENGINE ...........................................................................................................................11
4.5 GROUNDTRAVEL AND STEERING.........................................................................................................11
4.6 ENGAGINGTHE DECK DRIVE (CUTTER BLADES)................................................................................12
4.7 HILLSIDE OPERATION..............................................................................................................................13
4.8 PARKINGTHE MOWER.............................................................................................................................13
4.9 AFTER OPERATION..................................................................................................................................13
4.10 REMOVING CLOGGED MATERIAL ........................................................................................................13
4.11 MOVING MOWERWITH ENGINE STOPPED..........................................................................................14
4.12 RECOMMENDATIONS FOR MOWING....................................................................................................14
TROUBLESHOOTING CUTTING CONDITIONSSECTION 5 - ...............................................15

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Table of Contents
ADJUSTMENTSSECTION 6 - .................................................................................................18
6.1 PARKING BRAKE ADJUSTMENT ............................................................................................................18
6.2 NEUTRAL ADJUSTMENT .........................................................................................................................18
6.3 STEERING CONTROL ROD ADJUSTMENTS..........................................................................................18
6.4TRACKING ADJUSTMENT........................................................................................................................19
6.5THROTTLE CONTROL AND CHOKE ADJUSTMENTS............................................................................19
6.6 CUTTER DECK BELT ADJUSTMENTS ....................................................................................................19
6.7 BELT ALIGNMENT.....................................................................................................................................20
6.8 ADJUSTING CUTTING HEIGHT................................................................................................................20
6.9 ELECTRIC CLUTCH ADJUSTMENT.........................................................................................................23
MAINTENANCESECTION 7 - ..................................................................................................24
7.1 MAINTENANCE CHART - RECOMMENDED SERVICE INTERVALS ......................................................24
7.2 LUBRICATION............................................................................................................................................25
7.3 HYDRAULIC SYSTEM...............................................................................................................................27
7.4 ENGINE OIL ...............................................................................................................................................28
7.5 ENGINE FUEL SYSTEM............................................................................................................................28
7.6 ENGINE AIR CLEANER.............................................................................................................................29
7.7 BATTERY - ELECTRIC START MODELS..................................................................................................29
7.8 CUTTER BLADES......................................................................................................................................30
7.9TIRES..........................................................................................................................................................31
ILLUSTRATED PARTS LISTSECTION 8 - ..............................................................................32
8.1 SCAG APPROVED ATTACHMENTS AND ACCESSORIES......................................................................32
CASTER ASSEMBLY.......................................................................................................................................33
36A CUTTER DECK.........................................................................................................................................34
48V & 52V CUTTER DECKS ...........................................................................................................................36
61V CUTTER DECK.........................................................................................................................................38
ENGINE DECK - MANUAL START..................................................................................................................40
ENGINE DECK - ELECTRIC START ...............................................................................................................42
DRIVE AND BRAKE COMPONENTS..............................................................................................................44
HANDLE ASSEMBLY - 16" SMALL FRAME ..................................................................................................46
HANDLE ASSEMBLY - 20" LARGE FRAME ..................................................................................................48
HYDRAULIC ASSEMBLY.................................................................................................................................50
HYDRAULIC PUMP ASSEMBLY.....................................................................................................................52
WIRE HARNESSES .........................................................................................................................................54
WIRE HARNESSES .........................................................................................................................................55
WIRE HARNESSES .........................................................................................................................................56
REPLACEMENT DECALS AND INFORMATION PLATES .............................................................................57
LIMITEDWARRANTY - COMMERCIAL EQUIPMENT.........................Following Section 8

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Section 1
INTRODUCTION1.1
Your mower was built to the highest standards in the
industry. However, the prolonged life and maximum
efficiency of your mower depends on you following the
operating, maintenance and adjustment instructions in
this manual.
If additional information or service is needed, contact your
Scag Power Equipment Dealer.
We encourage you to contact your dealer for repairs.
All Scag dealers are informed of the latest methods to
service this equipment and provide prompt and efficient
service in the field or at their service shop. They carry a
full line of Scag service parts.
- IMPORTANT -
The replacement of any part on this product
by other than the manufacturer's authorized
replacement part may adversely affect the
performance, durability or safety of this
product.
Use of other than original Scag replacement
parts will void the warranty.
When ordering parts, always give the model and serial
number of your mower.The serial number plate is located
on the frame of the machine between the engine and
transmission were shown in Figure 1-1.
R
MODEL
SERIAL
Division of Metalcraft of Mayville, Inc.
Mayville, Wisconsin 53050
Patents Issued and Pending
SERIAL NUMBER
PLATE LOCATION
Mower Serial Number Plate LocationFigure 1-1.
GENERAL INFORMATION
USE ONLY SCAG APPROVED ATTACHMENTS AND
ACCESSORIES.
Attachments and accessories manufactured by companies
other than Scag Power Equipment are not approved for
use on this machine.See Section 8-1.
WARNING
Forpictorialclarity,someillustrationsandfigures
inthismanual mayshowshields,guardsorplates
openorremoved.Undernocircumstancesshould
your mower be operated without these devices
in place.
All information is based upon product information available
at the time of approval for printing.Scag Power Equipment
reserves the right to make changes at any time without
notice and without incurring any obligation.
DIRECTION REFERENCE1.2
The “Right” and “Left”, “Front” and “Rear” of the machine
are referenced from the operator’s right and left when in
the normal operating position and facing the forward travel
direction.
SERVICINGTHE ENGINE AND DRIVE1.3
TRAIN COMPONENTS
The detail servicing and repair of the engine and
transmission are not covered in this manual; only routine
maintenance and general service instructions are
provided. For service of these components during the
limited warranty period, it is important to contact your
Scag dealer or find a local authorized servicing agent
of the component manufacturer. Any unauthorized work
done on these components during the warranty period
may void your warranty.