BigDog X Diablo BAC-VAC User manual

117717 REV B
•••••
200 South Ridge Road
•••
Hesston, Kansas
•
67062-2097
BigDog®X Diablo
BAC-VAC™
OPERATOR’S MANUAL

REV B 117717

117717 toc-1 REV B
Table of Contents
General Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
To The New Owner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Using This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Warranty Registration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Parts and Service. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Safety Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Safe Operation and Service Precautions. . . . . . . . . . . . . . . . . . 2-1
Safety and Instruction Decals. . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Assembly Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Packing List - BAC-VAC™. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Deck Adapter Kits. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Mower Deck Preparation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
117720 (60") Adapter Assembly . . . . . . . . . . . . . . . . . . . . . . . . 3-3
117721 (72”) Adapter Assembly. . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Mower Preparation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
Frame Cover Assembly Installation . . . . . . . . . . . . . . . . . . . . . . 3-5
Final Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
BAC-VAC™ Mount Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
BAC-VAC™ Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
Weight Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Vacuum Pickup and Collection. . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Unloading the BAC-VAC™ . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Converting To Side Discharge Mode . . . . . . . . . . . . . . . . . . . . . 4-1
Removing The BAC-VAC™ . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Maintenance & Storage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Blower Housing and Flex Tube Maintenance . . . . . . . . . . . . . . 5-1
Blower Drive Belt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
BAC-VAC™ Hopper. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
BAC-VAC™ Hopper Switch Adjustment . . . . . . . . . . . . . . . . . . 5-2
Blower Impeller. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
Storage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

REV B toc-2 117717
Parts Manual. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1
60" Deck Adapter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-2
72" Deck Adapter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-4
Frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-6
Shell. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-8
Lid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-10
Linkage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-12
Frame Adapter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-14
Shell Electric . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-16
Wire Harness. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-18
Blower—550996 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-20

117717 1-1 REV B
GENERAL INFORMATION
To The New Owner
The purpose of this manual is to assist owners and operators
in maintaining and operating the BigDog®Mowers X Diablo
BAC-VAC™. Please read it carefully; information and
instructions furnished can help you achieve years of dependable
performance.
Using This Manual
General operation, adjustment and maintenance guidance is
outlined for both the experienced and novice Hustler®user.
Operating conditions vary considerably and cannot all be
addressed individually. Through experience, however, operators
should find no difficulty in developing good operating skills
suitable to most conditions.
Directions used in this manual, for example RIGHT or LEFT,
refer to directions when in operator position and facing forward,
unless otherwise stated.
Photographs and illustrations used were current at the time of
printing, but subsequent production changes may cause your
machine to vary slightly in detail. Hustler®Turf Equipment
reserves the right to redesign and change the machine as deemed
necessary, without notification. If a change has been made to
your machine which is not reflected in this operator’s manual, or
the parts manual, see your Hustler®Dealer for current
information and parts.
Warranty Registration
Your Hustler®Dealer must register this attachment on-line
within ten (10) days following date of purchase to validate your
warranty protection. As the new equipment owner, you should
confirm that your Hustler®Dealer has registered your
attachment with Hustler®Turf Equipment.
Be sure to register the mower plus each attachment that
displays a model and serial identification number plate with
Hustler®Turf Equipment.
IMPORTANT: Any unauthorized modification, alteration,
or use of non-approved attachments voids the warranty and
releases Hustler®Turf Equipment from any liability arising from
subsequent use of this equipment. Do not use or operate any
attachment which is not approved by Hustler®Turf Equipment.
Parts and Service
Use original Hustler®replacement parts only. These parts are
available through your local Hustler®Dealer. To obtain prompt,
efficient service, always provide the following information
when ordering parts:
1. Correct part description.
2. Correct part number.
3. Correct model number.
4. Correct serial number.
All warranty repair and service must be handled through an
authorized Hustler®Dealer. Arrangements should be made
through your local service center.

REV B 1-2 117717

117717 2-1 REV B
SAFETY PRECAUTIONS
This safety alert symbol is used to call attention to a message
intended to provide a reasonable degree of PERSONAL
SAFETY for operators and other persons during the normal
operation and servicing of this equipment.
This manual uses two other words to highlight information.
IMPORTANT calls attention to special mechanical information
and NOTE emphasizes general information worthy of special
attention.
All operators and mechanics should read this manual, and be
instructed about safe operating and maintenance procedures.
Improper use or maintenance by the operator or owner can
result in injury. To reduce the potential for injury, comply with
these safety instructions and always pay attention to the safety
alert symbol “”, which means DANGER or WARNING -
“personal safety instructions.” Failure to comply with the
instructions may result in personal injury or death.
Incorrect usage of this attachment may result in severe
injury. Personnel operating and maintaining it should be
trained in the proper use and should read the manuals
completely and thoroughly before attempting to set-up,
operate, adjust, or service this mower.
Safe Operation and Service Precautions
Evaluate the terrain to determine what accessories and
attachments are needed to properly and safely perform
the job. Only use accessories and attachments approved
by the manufacturer.
Always stop on level ground, disengage the deck clutch,
place the steering control levers in the park brake posi-
tion, stop the mower’s engine and remove the ignition
key before leaving the operator’s seat for any reason
including unclogging the chute.
Always be aware of any obstructions, especially small
children, when backing or unloading the hopper.
Always keep safety shields and covers in place, except
for servicing.
Never work on the blower assembly or the mower deck
when the mower’s engine is running.
Never operate machine with the hopper in the open posi-
tion except for unloading.
Never attempt high speed maneuvering in crowded or
congested areas.
Always operate with the complete BAC-VAC™ system,
mulching system or side discharge chute in place and in
the lowest position.
Always keep clear of the mower blades and attachments
during their operation.
Turn off the blades when not mowing.
Stop the engine before removing the BAC-VAC™ or
unclogging the discharge chute. Never clear the discharge
chute with the engine running. Turn off the engine and be
sure the blades have stopped before cleaning. Use a probe
to clear a plugged discharge area. Never use your hand!
Clean flammable material from the machine. Prevent
fires by keeping the engine compartment, exhaust
area, battery, fuel line, fuel tank and operator’s sta-
tion clean of accumulated trash, grass clippings, and
other debris. Always clean up spilled fuel and oil.
Grass collection system components are subject to wear,
damage and deterioration, which could expose moving
parts or allow objects to be thrown. Frequently check
components and replace with manufacturer’s recom-
mended parts when necessary.
Never direct discharged material toward anyone. Avoid
discharging material against a wall or obstruction. Mate-
rial may ricochet back toward the operator. Always dis-
engage the blades and wait for them to stop before
crossing gravel drives, walks or roads.
Safety and Instruction Decals
The decals are designed to give the operator brief information
needed in the daily operation and service of the mower. These
decals are not intended to be used in place of this manual but
instead are to be used as an extension of this manual. These
decals should not be removed or obliterated. Replace these
decals if they become unreadable.
• It is the owner’s responsibility to make certain that the
operators and mechanics read and understand this manual
and all decals before operating this mower.
• It is also the owner’s responsibility to make certain that
the operators and mechanics are qualified and physically
able individuals, properly trained in the operation of this
equipment.
• All operators and mechanics must become familiar with
the safe operation of the equipment, operator controls
and decals.
• Never let children or untrained people operate or service
the equipment. Local regulations may restrict the age of
the operator.
DANGER
– denotes immediate hazards which WILL result in
severe personal injury or death.
WARNING
– denotes a hazard or unsafe practice which COULD
result in severe personal injury or death.

REV B 2-2 117717
• The owner/user can prevent and is responsible for acci-
dents or injuries occurring to themselves, other people or
property.
• The owner should also ensure that the operators/mechan-
ics know that they are responsible for their own safety as
well as the safety of other persons within the vicinity.
Remember, the operator is responsible for accidents or
hazards occurring to other people or their property.
The following illustrations show the various safety decals that
are located on the mower. A brief explanation, for those
requiring one, is shown to help the operator understand the
meanings of these decals.
WARNING
Specific safety warning decals are located on the equip-
ment near the immediate areas of potential hazards. These
decals should not be removed or obliterated. Replace
them if they become non-readable.
WARNING: Thrown objects!
Part Number 601624 Part Number 601837
•Never operate the mower
deck with side deflector dam-
aged, altered, removed or in
raised position, except when
the entire grass catcher
attachment or mulching sys-
tem is being used.
DANGER:
Rotating blades, pulleys &
belts
•Keep hands, feet and cloth-
ing away.
•Keep shields or covers in
place while machine is in
operation.
Part Number 602758 Part Number 602757
•Read Operator’s Manual
before attempting to operate
this machine.
•Wear ear protection, eye pro-
tection and safety shoes
when operating this equip-
ment.
DANGER:
Rotating impeller
•Keep hands, feet and cloth-
ing away.
•Keep shields or covers in
place while machine is in
operation.
•Stop engine, remove ignition
key.
•Engage park brake.
•Use a probe to clear debris
from blower assembly.
Remove blower chute to
clear debris from chute.
•Never engage mower deck
unless the entire grass
catcher attachment is prop-
erly installed.
602758
602757

117717 2-3 REV B
Part Number 603940 Part Number 603967
WARNING
Crushing body
•Stay clear of raised hopper
door.
•Never get between the hop-
per door and the hopper con-
tainer.
•Do not reach or climb into the
hopper.
•Never reach into the hopper
door opening or hopper door
linkage area.
WARNING
Crushing hand or foot
•Never reach into the crushing
danger zone.
•Keep hands and feet away.
603940
603967

REV B 2-4 117717

117717 3-1 REV B
ASSEMBLY INSTRUCTION
These instructions apply to the assembly of the BigDog®
Mowers BAC-VAC™ to a BigDog®X Diablo 60” or 72”
mower.
It is intended that these units be installed by trained BigDog®
Mowers service personnel. If additional assistance is required,
contact the BigDog®Mowers Customer Service Department.
Directions given in these instructions, for example left and
right, refer to direction while seated on the mower.
Before proceeding, read through the following instructions to
familiarize yourself, while at the same time identify and
inventory kit parts supplied.
Unpack and inspect all parts. Notify carrier of any shipping
damages immediately.
Packing List - BAC-VAC™
Deck Adapter Kits
The following adapter kits must be used when mounting the
BAC-VAC™ to a particular deck.
Part No. Description Qty
550996 Blower assembly 1
N/A Weight assembly 1
603935 Wiring harness 1
N/A BAC-VAC™ assembly 1
N/A Control panel 1
036236 CS .312-18 X 1.00 HX G5 3
768523 FW .343 X .687 X .051/.080H 3
000331 WIRE TIE, SMALL/SHORT 7
086660 NT .375-16 HXZY NL 8
767954 FW .406 X .812 X .060 SAE 11
017616 CS .500-13 X 1.75 HX G5 2
767962 FW .531 X 1.063 X .090 SAE 20
008193 NT .500-13 HX G5 ZNYC 8
078386 FW .510 X 1.750 X .18 ZNYC 2
705954 CS .500-13 X 1.25 HX G5 ZN 10
604423 UB .375-16 X 2.00 X 4.50 SQ 4
053702 CE .620 X 3.0 X .15 X 2.84 2
704783 FW .625 X 1.50 X .105 ZN 4
023036 HP .148 X 2.690 ZN 2
603356 Flex tube 1
115993 LH Super Z mount 1
118150 RH Super Z mount 1
116714 Mount spacer 1
604576 Muffler extension 1.50” 1
604577 Muffler extension 1.375” 1
769299 SC #10 X.750 PHILLIPS 1
025395 CB .375-16X 1.00 G5 ZNY 4
118216 PLATE, AUX WEIGHT 10 LB 1
054502 NT .375-16 HX GRD 5 ZNY 4
Deck Size Adapter Kit P/N
60” 117720
72” 117721

REV B 3-2 117717
Mower Deck Preparation
1. Park the mower on a flat surface. Always place the deck
clutch switch in the disengaged position, place the
steering control levers in the park brake position and shut
off the ignition switch and remove the key from the
switch. Disconnect the negative battery cable.
2. Remove the discharge chute and torsion spring.
NOTE: Retain these parts as they will be re-installed
when the BAC-VAC™ is removed.
3. Release the deck drive belt tension.
4. Remove the existing spindle bolt and pulley from the
center blade spindle.
All decks – Replace the pulley with the double pulley
and place the new cup washer between the head of the
new bolt and the drive pulley. Thread the cup washer and
bolt assembly into the spindle shaft. Torque bolt to 118
ft.-lbs. Figure 3-2 or Figure 3-3
5. Place the cutout template on the deck and mark the notch
outline on the deck wall. Remove the template. Figure 3-
1
6. Cut out the notch on the deck. Remove any sharp edges
or burrs.
7. Attach the blower baffle to the deck. Figure 3-2 or Figure
3-3
8. Assemble the blower mount to blower assembly. Figure
3-2 or Figure 3-3
9. Attach the blower assembly to the deck by inserting the
rod through the discharge chute bracket and blower
mount and secure with nut. Figure 3-2 or Figure 3-3
10. Place the deck drive belt around the lower pulley of the
double pulley. Confirm that the belt is properly routed
and seated on all pulleys and idlers. Re-tension the deck
drive belt per the tensioning instructions found in the
mower’s General Service Manual.
11. Remove the front right side deck lift chain and attach the
rigid link to the deck lift arm. Figure 3-2 or Figure 3-3
12. Position the center drive bracket (115773) on the deck as
shown and attach it and the rigid link to the deck. Figure
3-2 or Figure 3-3Figure 3-2 or Figure 3-3
NOTE: The rigid link must move freely in the top slot
and rotate freely in the bottom hole.
13. Install and route the blower belt around the blower
pulleys and the upper pulley on the double pulley. This
belt is self-tensioning. Figure 3-4
14. Attach the blower belt cover. Figure 3-2 or Figure 3-3.
Figure 3-1
WARNING
Do not operate deck without discharge chute or complete
BAC-VAC™ system in place.
60” Cutout
Template
Notch
72” Cutout
Template
Notch

117717 3-3 REV B
Figure 3-2
1
2
3
4
5
9
10
15
6
14
117720 (60") Adapter Assembly
Existing
hardware
Blower
assembly
Existing
hardware
Existing
hardware
Discharge
cover
12
11
13
Existing
hardware
Existing
hardware
7
Outlet tube and
adapter assembly
Existing
rod
8
INDEX NO. PART NO. DESCRIPTION QTY.
1 552083 PULLEY COVER ASSEMBLY 1
2 792002 KNOB 5/16-18 X 3/4" 1
3 036244 CS .375-16 X 1.00 HX G5 4
4 767954 FW .406 X .812 X .060 SAE 6
5 117758 BLOWER MOUNT 1
6 054502 NT .375-16 HX G5 ZNY 2
7 603806 110.5" ELA-SEC BELT 1
8 074252 CS .500-13 X 1.50 HX G5 1
9 752386 CW .515 X 2.25 X .204 BLK 1
10 603311 60" DOUBLE DRIVE PULLEY 1
11 729624 CS .437-14X2.50 HX G5 Z 1
12 117762 RIGID LINK 1
13 601069 CN .312-18 X .20 MAX THK 1
14 115773 CENTER DRIVE BRACKET 1
15 117699 BAFFLE 1
117807 60" CUTOUT TEMPLATE
(NOT SHOWN) 1
3
4
4
12
Deckdischarge
opening
Notch
Existing
hardware
Torque to
118 ft.-lbs.

REV B 3-4 117717
Figure 3-3
2
1
3
4
8
5
6
79
10
11 12
14
13
15
117721 (72”) Adapter Assembly
Existing
hardware
Blower
assembly
Existing
hardware
Discharge
cover
4
Existing
hardware
Existing
hardware
Existing
hardware
12
Existing
rod
Existing
hardware
Outlet tube and
adapter assembly
Deckdischarge
opening
Notch
INDEX NO. PART NO. DESCRIPTION QTY.
1 552084 PULLEY COVER 1
2 792002 KNOB 5/16-18 X 3/4" 1
3 036244 CS .375-16 X 1.00 HX G5 4
4 767954 FW .406 X .812 X .060 SAE 6
5 117758 BLOWER MOUNT 1
6 054502 NT .375-16 HX G5 ZNY 2
7 604703 BELT,A 119.00" EL 1
8 074252 CS .500-13 X 1.50 HX G5 1
9 752386 CW .515 X 2.25 X .204 BLK 1
10 603712 60" SZ DOUBLE DRIVE PULLEY 1
11 729624 CS .437-14 X 2.50 HX G5 Z 1
12 117768 RIGID LINK 1
13 601069 CN .312-18 X .20 MAX THK 1
14 115773 CENTER DRIVE BRACKET 1
15 117702 BAFFLE 1
117808 72" BELT TEMPLATE
(NOT SHOWN) 1
Torque to
118 ft.-lbs.
3
4

117717 3-5 REV B
Mower Preparation
1. Attach the correct muffler extension to the muffler outlet
tube. Figure 3-5
IMPORTANT: Tailpipe and tailpipe extension become
very hot during operation. These parts must not be
allowed to contact the catcher shell during operation
or while the mower is hot.
2. Remove the two cap screws that attach the left side of the
rear bumper to the mower frame. Figure 3-6
3. Attach the left side mount to the rear bumper and the
mower frame using the hardware shown. Figure 3-6
4. Repeat steps 2 & 3 for the opposite side. Figure 3-6
5. Attach the mount spacer to the left and right mounts as
shown. Figure 3-6
6. Tighten all hardware.
Frame Cover Assembly Installation
1. Raise the seat and seat platform to allow access to the
area underneath the seat.
2. The BAC-VAC™ frame harness should be routed on the
mower as shown. Figure 3-7
3. Remove the existing left side frame cover and right side
frame cover from the mower. Figure 3-8 & Figure 3-9
4. Unbolt the hose clamp from the mower frame that the
wiring harness to the control panel goes through. Do not
remove the wiring harness from the clamp. Figure 3-10
5. Route the BAC-VAC™ frame harness pigtail that has the
two connector bodies through the hose clamp and
retighten clamp hardware. Figure 3-10
6. Remove the mower’s control panel.
7. Locate the auxiliary connector body underneath the
control panel and remove the cap. Figure 3-11
8. Plug the BAC-VAC™ frame harness connector into the
auxiliary plug. Figure 3-12
9. Secure the BAC-VAC™ frame harness to the main
mower harness with a wire tie. Figure 3-13
10. Re-attach the mower control panel. Make sure that the
wiring harnesses are routed through the slot in the bottom
of the control panel correctly.
11. Re-attach the right frame cover to the mower frame.
12. Route the BAC-VAC™ frame harness as shown (Figure
3-7) and connect the appropriate wires to the battery
terminals. Secure the BAC-VAC™ frame harness to the
mower using the wire ties as shown. Make sure that none
of the harness will come in contact with any moving
parts. Figure 3-14 & Figure 3-15
13. Attach the three wires on the wiring harness to the BAC-
VAC™ switch. Figure 3-16
14. Attach the left frame cover assembly to the mower frame.
Figure 3-17
15. Route the BAC-VAC™ frame harness along the left side
of the mower frame as shown. Secure the harness to the
mower using the wire ties as shown. Figure 3-18 &
Figure 3-19
Final Connection
1. Park the mower on a flat surface. Always place the deck
clutch switch in the disengaged position, place the
steering control levers in the park brake position and shut
off the ignition switch and remove the key from the
switch. Disconnect the negative battery cable.
2. Roll the BAC-VAC™ to the mower and slide the lower
hooks over the rod on the mount tube. Figure 3-23
NOTE: It is recommended that two people attach the
hopper to the mower mounts. One person to roll the hop-
per into position, slide the lower hooks onto the mount
Figure 3-4
WARNING
Allow engine and muffler to cool before assembling the
unit to the mower.
Figure 3-5
Blower belt
INDEX
NO. PART NO. DESCRIPTION
1 604576 MUFFLER EXT. 1.5” (KAWASAKI ENGINES)
604577 MUFFLER EXT. 1.375” (KOHLER ENGINES)
2 769299 SC #10 X.750 PHILLIPS
1
2
Muffler outlet tube

REV B 3-6 117717
spacer and pivot it into position. The second person to
insert the clevis pins, flat washers, and hair pins thru the
side mount brackets and the BAC-VAC™ mount tubes.
Figure 3-22
Figure 3-6
INDEX NO. PART NO. DESCRIPTION
1 116714 MOUNT SPACER
2 115933 LS MOUNT
3 118150 RS MOUNT
4 705954 CS .500-13 X 1.25 HX G5 ZN
5 767962 FW .531 X 1.063 X .090 SAE
6 008193 NT .500-13 HX G5 ZNYC
7 017616 CS .500-13 X 1.75 HX G5
8 078386 FW .510 X 1.75 X .18 ZNYC
6
6
3
76
5
2
4
41
BAC-VAC™ Mount Assembly
Rear
bumper
8
7
5
5
5
4
5
5
5
5
6
4
5
8
5
Figure 3-7
Framewire
harness
Framewire
harness
Figure 3-8
Right side
frame cover

117717 3-7 REV B
3. Connect the BAC-VAC™ frame harness connector body
to the hopper’s harness connector body. Figure 3-21
4. Raise the discharge cover on the blower housing. Slide
the outlet adapter into place on the blower outlet. Secure
in place with the discharge cover latching the rod handle
of the outlet adapter. Figure 3-2 or Figure 3-3
5. Slide one end of the flex tube onto the blower outlet tube.
Figure 3-24
6. Slide the other end of the flex tube over the inlet tube.
Figure 3-24
7. Attach the counter weight mount to the front of the
mower. Figure 3-25
8. Attach the auxiliary weight to the weight mount. Figure
3-25
9. Slide the weights vertically onto the mount and lock in
place using the weight lock plate and tighten knobs.
Figure 3-25
10. Reconnect the negative battery cable.
Figure 3-9
Figure 3-10
Existing left side
frame cover
Remove this hardware
Hose clamp
Wire harness
Figure 3-11
Figure 3-12
Figure 3-13
Auxiliary connector body
Cap
Auxiliary connector body
BAC-VAC™
frameharness
connector
BAC-VAC™
frame harness
Main mower
harness
Wire tie

REV B 3-8 117717
11. Increase the mower’s drive tires’ pressure to 16 psi (110
KPa). The drive tires will need to have to the air pressure
increased to support the additional weight of the BAC-
VAC™ system and when grass clippings are in the
hopper.
NOTE: When the BAC-VAC™ system is removed the
air pressure in the tires should be decreased to the normal
operating range of 8 - 12 psi (55 - 83 KPa).
Figure 3-14
Figure 3-15
BAC-VAC™
frame harness
Wire ties
+Battery
terminal –Battery
terminal
Red wire
Black wire
Wire ties
Figure 3-16
Figure 3-17
Orange/white
Orange/blue
Blue
Switch
Frame cover
BAC-VAC™
frame harness

117717 3-9 REV B
Figure 3-18
Figure 3-19
Wire tie
BAC-VAC™
frame harness
Wire tie
BAC-VAC™
frame harness
Figure 3-20
Figure 3-21
CS .312 x 1.00
FW .343 x .687
Frame cover
Hooper harness
connector body
BAC-VAC™
frame harness
connector body

REV B 3-10 117717
Figure 3-22
INDEX
NO. PART NO. DESCRIPTION
1 053702 CE .620 X 3.0 X .15 X 2.84
2 704783 FW .625 X 1.500 X .105 ZN
3 023036 HP .148 X 2.690 ZN
2
1
BAC-VAC™ Assembly
2
32
2
1
Hopper assembly
Figure 3-23
Figure 3-24
Mount tube Hooks
Blower
outlet tube
Inlet tube
Flex
tube