BIGDOG® MOWER CO. DIABLO® MP BAC-VAC™
Operator’s Manual
200 South Ridge Road
Hesston, Kansas
67062
121913 REV B
REV B 121913
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Assembly Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Packing List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Deck Adapter Kits. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Mower Deck Preparation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
122170 (60") Adapter Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
122171 (72") Adapter Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Mower Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
BAC-VAC™ Mount Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
Frame Cover Assembly Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
Final Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
BAC-VAC™ Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
Weight Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Collecting and Vacuum Pickup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
BAC-VAC™ Warranty Policy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
121913 toc-1 REV B
REV B toc-2 121913
GENERAL INFORMATION
To The New Owner
The purpose of this manual is to assist owners and operators in maintaining and operating the Big Dog® Mowers Diablo MP BAC-VAC™. Please read it carefully; information and
instructions furnished can help you achieve years of depend
-
able performance.
Using This Manual
This manual contains general operation information as
well as basic adjustment and maintenance information.
Since operating conditions vary considerably, all conditions
cannot be addressed individually. Through training and expe
rience, operators should develop safe operating practices
suitable to most conditions.
Directions used in this manual, for example RIGHT or LEFT,
refer to directions when in the operator position and facing
forward, unless otherwise stated.
Though current at the time of printing, photographs and
illustrations shown may vary slightly from your mower due to
subsequent production changes. Big Dog
®
Mower Company
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 manual,
contact your Big Dog
®
Mower Dealer for current information.
-
to validate your warranty protection. As the new equipment
owner, you should confirm that your Big Dog
has registered your attachment with Big Dog
®
Mowers Dealer
®
Mowers.
Be sure to register the mower plus each attachment that
displays a model and serial identification number plate with
Big Dog
®
Mowers.
IMPORTANT: Any unauthorized modification, alteration,
or use of non-approved attachments voids the warranty and
®
releases Big Dog
Mowers from any liability arising from subsequent use of this equipment. Do not use or operate any
attachment which is not approved by Big Dog
®
Mowers.
Parts and Service
Use only original Big Dog® Mower replacement parts available from your local Big Dog® Mower Dealer. For 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 arrangements for warranty repair and service must be
handled through an authorized Big Dog
®
Mower Dealer.
Warranty Registration
Your Big Dog® Mowers Dealer must register this attach-
ment on-line within ten (10) days following date of purchase
121913 1-1 REV B
REV B 1-2 121913
SAFETY PRECAUTIONS
DANGER
WARNING
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.
– denotes immediate hazards which WILL result in
severe personal injury or death.
– denotes a hazard or unsafe practice which COULD
result in severe personal injury or death.
This manual uses two other words to highlight information.
IMPORTANT calls attention to special mechanical informa
tion 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 proce
dures. If the operators or mechanics cannot read and understand English, it is the owner’s responsibility to explain this
material to them.
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 ser
vice 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.
-
Never leave a running mower unattended. Before leav-
ing the operator’s seat for any reason, including emptying the catcher or unclogging the chute:
• Always stop on level ground.
• Disengage the deck clutch.
• Place the steering control levers in the park brake
position.
• Stop the engine.
• Remove the ignition key.
• Wait for the engine and all moving parts to come
to a complete stop.
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
position 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 attach-
-
-
ments 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 dis
charge 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 station 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
recommended parts when necessary.
Never direct discharged material toward anyone. Avoid
discharging material against a wall or obstruction.
Material may ricochet back toward the operator.
Always disengage the blades and wait for them to stop
before crossing gravel drives, walks or roads.
-
121913 2-1 REV B
Safety and Instruction Decals
WARNING
601837
602758
602757
603940
603967
The decals are designed to give the operator brief informa-
tion 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 physi
cally 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.
• The owner/user can prevent and is responsible for
accidents or injuries occurring to themselves, other
people or property.
• The owner should also ensure that the operators/
mechanics know that they are responsible for their
own safety as well as the safety of other persons
within the vicinity. Remember, the operator is responsi
ble for accidents or hazards occurring to other people
or their property.
Part Number 601837
-
Part Number 602758
Part Number 602757
-
DANGER:
Rotating blades, pulleys & belts
• Keep shields and covers in place
while machine is in operation
• Keep hands, feet and clothing
away from rotating pulleys and
belts.
• Read the Operator’s Manual before
attempting to operate this machine.
• Wear ear protection, eye protection
and safety shoes when operating
this equipment.
DANGER: Rotating impeller
• Keep hands, feet and clothing away.
• Keep shields or covers in place while the
machine is in operation.
• Stop the engine, remove the ignition key.
• Engage the park brake.
• Use a probe to clear debris from the
blower assembly. Remove blower chute
to clear debris from chute.
• Never engage the mower deck unless the
entire grass catcher attachment is prop
erly installed.
-
Specific safety warning decals are located on the
equipment near the immediate areas of potential
hazards. These decals should not be removed or
obliterated. Replace them if they become non-read
-
able.
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.
WAR NIN G:
Thrown objects!
Part Number 601624
• Never operate the mower deck with side
deflector damaged, altered, removed or in
raised position, except when the entire
grass catcher attachment or mulching sys
tem is being used.
-
Part Number 603940
Part Number 603967
WARNING: Crushing body
• Stay clear of the raised hopper door.
• Never get between the hopper door and the
hopper container.
• Do not reach or climb into the hopper.
• Never reach into the hopper door opening or
the hopper door linkage area.
WARNING: Crushing hand or foot
• Never reach into the crushing danger zone.
• Keep hands and feet away.
REV B 2-2 121913
ASSEMBLY INSTRUCTIONS
These instructions apply to the assembly of the Big Dog
®
Mowers 934463 BAC-VAC™ to a Big Dog® Diablo MP 60” or
72” mower with serial numbers 140400001 and higher.
It is intended that these units be installed by trained Big
®
Dog
Mowers service personnel. If additional assistance is
required, contact the Big Dog
®
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 with them, while at the same time iden
tify and inventory kit parts supplied.
Unpack and inspect all parts. Notify the carrier of any shipping damages immediately.
Packing List
Part No. Description Qty
-
120332 BLOWER ASSEMBLY 1
N/A WEIGHT ASSEMBLY 1
603935 WIRING HARNESS 1
N/A BAC-VAC™ ASSEMBLY 1
N/A CONTROL PANEL 1
768523 FW .343 X .687 X .051/.080H 11
036236 CS .312-18 X 1.00 HX G5 7
000331 WIRE TIE 7
086660 NT .375-16 HXZY NL 6
767954 FW .406 X .812 X .060 SAE 6
017616 CS .500-13 X 1.75 HX G5 6
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 6
604423 UB .375-16 X 2.00 X 4.50 SQ 2
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
115933 LH MOUNT 1
118150 RH MOUNT 1
116714 MOUNT SPACER 1
604576 MUFFLER EXTENSION 1.5" 1
604577 MUFFLER EXTENSION 1.375" 1
769299 SC #10 X.750 PHILLIPS 1
034280 CS .312-18 X .75 HX G5 4
025395 CB .375-16 X 1.00 HX G5 2
017616 CS .500-13 X 1.750 HX G5 6
119745 INLET W/A 1
Deck Adapter Kits
The following adapter kits must be used when mounting
the BAC-VAC™ to a particular deck.
Deck Size Adapter Kit P/N
60” 122170
72” 122171
121913 3-1 REV B
Mower Deck Preparation
A
WARNING
1. Before proceeding:
• Park the mower on level ground.
• Disengage the deck clutch.
• Place the steering control levers in the park brake
position.
• Stop the engine.
• Remove the ignition key.
• Wait for the engine and all moving parts to come
to a complete stop.
• 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.
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 the bolt to 118
ft.-lbs. Refer to
5. Attach the blower baffle to the deck. Refer to
Figure 3-2 or Figure 3-3.
6. Assemble the blower mount to the blower assembly.
Refer to
7. Attach the blower assembly to the deck by inserting
the rod through the discharge chute bracket and the
blower mount and secure with a nut. Refer to
Figure 3-2 or Figure 3-3.
8. 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 using the spring anchor bracket. Ten
sion the belt per the tensioning instructions found in
the mower’s General Service Manual.
Figure 3-2 or Figure 3-3.
Figure 3-2 or Figure 3-3.
9. Install and route the blower belt around the blower pulleys and the upper pulley on the double pulley. This
belt is self-tensioning.
A. Blower belt
10. Remove the front right side deck lift chain and attach
the rigid link to the deck lift arm. Refer to
Figure 3-3.
Position the center drive bracket on the deck as shown
and attach it and the rigid link to the deck.
NOTE: The rigid link must move freely in the top slot and
rotate freely in the bottom hole.
11. Attach the center drive cover. Refer to Figure 3-2 or
Figure 3-3.
Do not operate the deck without the discharge chute
or complete BAC-VAC™ system in place.
-
Figure 3-1
Figure 3-1
Figure 3-2 or
REV B 3-2 121913
2
11
3
4
4
4
5
6
7
9
10
11
12
14
13
3
8
INDEX NO. PART NO. DESCRIPTION INDEX NO. PART NO. DESCRIPTION
1 552081 CENTER DRIVE COVER 8 074252 CS .500-13 X 1.50 HX G5
2 792002 KNOB 5/16-18 X 3/4" 9 752386 CW .515 X 2.25 X .204 BLK
3 036244 CS .375-16 X 1.00 HX G5 10 603311 DOUBLE DRIVE PULLEY
4 767954 FW .406 X .812 X .060 SAE 11 117762 RIGID LINK
5 117758 BLOWER MOUNT 12 601069 CN .312-18 X .20 MAX THK
6 054502 NT .375-16 HX G5 ZNY 13 115773 CENTER DRIVE BRACKET
7 603806 110.5" EL A-SEC BELT 14 117696 BAFFLE
122170 (60") Adapter Assembly
Existing
hardware
Blower
assembly
Existing
hardware
Existing
hardware
Discharge
cover
Outlet tube and
adapter assembly
Existing
hardware
Existing
hardware
Notch
Existing
rod
Torque to 65-
75 ft.-lbs.
Deck discharge
opening
Existing
hardware
1
Existing
hardware
Existing
hardware
121913 3-3 REV B
Figure 3-2
122171 (72") Adapter Assembly
2
11
3
4
4
4
5
6
7
9
10
11
12
14
13
3
Existing
hardware
Blower
assembly
Existing
hardware
Discharge
cover
Outlet tube and
adapter assembly
Existing
hardware
Existing
hardware
Notch
Existing
rod
Deck discharge
opening
8
Existing
hardware
1
Existing
hardware
Existing
hardware
INDEX NO. PART NO. DESCRIPTION INDEX NO. PART NO. DESCRIPTION
1 552082 CENTER DRIVE COVER 8 074252 CS .500-13 X 1.50 HX G5
2 792002 KNOB 5/16-18 X 3/4" 9 752386 CW .515 X 2.25 X .204 BLK
3 036244 CS .375-16 X 1.00 HX G5 10 603712 DOUBLE DRIVE PULLEY
4 767954 FW .406 X .812 X .060 SAE 11 117768 RIGID LINK
5 117758 BLOWER MOUNT 12 601069 CN .312-18 X .20 MAX THK
6 054502 NT .375-16 HX G5 ZNY 13 115773 CENTER DRIVE BRACKET
7 604703 BELT, 119.00" EL 14 117702 BAFFLE
Existing
hardware
Torque to
65-75 ft.-lbs.
REV B 3-4 121913
Figure 3-3
Mower Preparation
WARNING
INDEX
NO.
PART NO. DESCRIPTION
1 604576 MUFFLER EXTENSION 1.5" (KAWASAKI
FX1000 ENGINE)
604577 MUFFLER EXTENSION 1.375" (KAWASAKI
FX850 ENGINE)
2 769299 SC #10 X.750 PHILLIPS
1
2
Muffler outlet tube
INDEX
NO.
PART NO. DESCRIPTION
1 118243 MOUNT SPACER
2 116739 MOUNT, LS
3 116740 MOUNT, RS
4 017616 CS .500-13 X 1.750 HX G5
5 767962 FW .531 X 1.063 X .090 SAE
6 008193 NT .500-13 HX G5 ZNYC
7 078386 FW .510 X 1.750 X .18 ZNYC
8 705954 CS .500-13 X 1.250 HX G5 ZN
6
6
3
7
6
5
2
8
4
1
BAC-VAC™ Mount Assembly
Rear
bumper
8
7
5
5
5
4
5
5
5
Allow the engine and muffler to cool before assembling the unit to the mower.
1. Attach the correct muffler extension to the muffler outlet tube using the self tapping screw shown. Figure 3-4
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.
3. Attach the left side mount to the rear bumper and the
mower frame using the hardware shown.
Figure 3-5
Figure 3-5
4. Repeat steps 2 & 3 for the opposite side. Figure 3-5
5. Attach the mount spacer to the left and right mounts
as shown.
Figure 3-5
Figure 3-4
6. Tighten all hardware.
121913 3-5 REV B
Figure 3-5
Frame Cover Assembly Installation
A
A
A
B
A
B
A
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 3-6
A. Remove this hardware B. Existing left side frame
cover
Figure 3-8
A. Frame harness
Figure 3-6
3. Remove the existing left side frame cover and right
side frame cover from the mower.
Figure 3-8 &
Figure 3-9
A. Right side frame cover
Figure 3-7
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.
6. Remove the mower’s control panel.
Figure 3-10
A. Frame harness B. Hose clamp
Figure 3-9
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. Secure the BACVAC™ frame harness to the main mower harness.
Figure 3-13
11. Re-attach the right frame cover to the mower frame.
Figure 3-14
REV B 3-6 121913
A. Cap B. Auxiliary connector
A
B
A
B
A
B
C
A
B
C
body
A. Frame harness
B. Wire tie
C. Main mower harness
Figure 3-10
A. Cap B. Auxiliary connector
body
Figure 3-11
12. Route the BAC-VAC™ frame harness as shown 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 3-15 & Figure 3-16
13. Attach the three wires on the wiring harness to the
BAC-VAC™ switch.
Figure 3-17
Figure 3-12
A. Frame harness
C. Main mower harness
B. Wire tie
Figure 3-13
14. Attach the left frame cover assembly to the mower
frame.
Figure 3-18
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 3-19 &
Figure 3-20
121913 3-7 REV B
A. Right side frame cover
A
A
C
E
D
F
A
B
A
A
D
C
B
Figure 3-14
A. Wire tie
B. Frame harness
C. Black wire
A. Switch
B. Orange/blue wire
D. Red wire
E. – Battery terminal
F. + Battery terminal
Figure 3-16
C. Blue wire
D. Orange/white wire
Figure 3-17
A. Frame harness B. Wire ties
Figure 3-15
REV B 3-8 121913
A. Frame cover B. Existing hardware
A
B
B
B
A
B
A
Figure 3-18
A. Frame harness B. Wire ties
Figure 3-20
A. Frame harness B. Wire ties
Figure 3-19
121913 3-9 REV B
Final Connection
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
3
2
2
1
Hopper assembly
A
B
A
B
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 3-21
NOTE: It is recommended that two people attach the hopper to the mower mounts. One person to roll the hopper
into position, slide the lower hooks onto the mount
spacer and pivot it into position. The second person to
insert the clevis pins, flat washers, and hair pins through
the side mount brackets and the BAC-VAC™ mount tubes.
Figure 3-22
A. Mount tube B. Hooks
3. Connect the BAC-VAC™ frame harness connector body
to the hopper’s harness connector body.
4. Raise the discharge cover on the blower housing. Slide
the outlet adapter into place on the blower outlet.
REV B 3-10 121913
Figure 3-22
Figure 3-21
A. Frame harness connec-
tor body
B. Hopper harness con-
nector body
Figure 3-23
Secure the discharge cover in place with the discharge
Figure 3-23
cover latching the rod handle of the outlet adapter.
Refer to
Figure 3-2 or Figure 3-3.
5. Slide one end of the flex tube onto the blower outlet
A
B
C
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. Slide the weights vertically onto the mount and lock in
place using the weight lock plate and tighten knobs.
Figure 3-25
9. Reconnect the negative battery cable.
10. 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).
A. Flex tube
B. Inlet tube
C. Blower outlet tube
Figure 3-24
121913 3-11 REV B
2
3
5
1
4
6
7
INDEX
NO.
PART NO. DESCRIPTION
1 118240 WEIGHT LOCK PLATE
2 792002 KNOB 5/16-18 X 3/4"
3 118242 WEIGHT MOUNT
4 604423 UB .375-16 X 2.00 X 4.50 SQ
5 603207 WEIGHT
6 086660 NT .375-16 HXZY NL
7 767954 FW .406 X .812 X .060 SAE
8 025395 CB .375-16 X 1.00 G5
Weight Assembly
8
6
7
3
Figure 3-25
REV B 3-12 121913
OPERATION
WARNING
WARNING
WARNING
WARNING
WARNING
WARNING
WARNING
Collecting and Vacuum Pickup
Follow normal mower start-up and operating procedures as
outlined in the mower’s operator’s manual. The blower will
operate when the mower deck clutch switch is engaged. To
stop the blower, return the deck clutch switch to the disen
gaged position.
Proceed to mow in the normal manner and occasionally
glance at the flex tube. When the hopper is full, the speed of
debris through the tube will decrease. When the hopper is
filled, move the deck clutch switch to the disengaged posi
tion and drive the machine to the unloading area.
It is best that the hopper be unloaded before the discharge
chute and flex tube areas become clogged. If clogging
occurs, it will be necessary to clear the blower chute and flex
tube areas of all material before starting to mow again.
Make certain the engine is turned off, the steering
control levers are in the park brake position and
the ignition key is removed from the ignition
switch and be sure blades have stopped before
clearing the blower chute and flex tube areas.
-
-
Unloading the BAC-VAC™
Make certain the deck clutch switch is in the disengaged position before unloading.
The BAC-VAC™ is designed to dump the load in a desig-
nated area on the ground while the mower is stationary.
To dump the BAC-VAC™, place the steering control levers in
the park brake position to prevent accidental mower move
ment or engine cutting in and out.
NOTE: The mower’s ignition switch must be in the “ON”
position to open or close the hopper door.
Never approach the BAC-VAC™ hopper while the
mower’s ignition switch is in the “ON” position.
-
Never place hands or feet into the discharge area.
The impeller is relatively close to the housing and
will cause severe injury. Use a probe to clean
debris from blower housing discharge area. The
discharge cover must remain closed whenever the
blower chute is removed.
Never engage the mower deck unless the BACVAC™ flex tube is in place on the BAC-VAC™ inlet
tube and inserted onto blower chute outlet tube.
Prevent objects being thrown and the accumulation
of grass clippings and other debris in the engine
compartment by NEVER operating the mower deck
unless:
• BAC-VAC™ is in the catching position.
• Flex tube is in place on the blower chute and on
the BAC-VAC™ inlet tube.
• The hopper door is fully closed.
Hold the BAC-VAC™ operating switch in the “open” position
until the hopper door comes to a stop. Keep the hopper door
open until all of the clippings have been discharged from the
hopper. Then close the hopper door by holding the operating
switch in the “closed” position until the hopper door has
closed all the way. The deck clutch switch may then be
engaged to continue mowing.
Never work on the blower assembly or the mower
deck when the mower engine is running.
Converting To Side Discharge Mode
1. Park the mower on a flat surface. Turn the engine off,
place the steering control levers in the park brake posi
tion and remove the ignition key. Be sure the blades
have stopped before dismounting from the mower.
2. Remove the flex tube from the BAC-VAC™ inlet tube
and blower outlet tube.
3. Remove the blower outlet tube from the blower assembly. Figure 4-1
4. Remove the blower belt cover from the deck.
Figure 4-1
Figure 4-1
-
121913 4-1 REV B
5. Release the tension from the blower drive belt and
WARNING
WARNING
A
B
C
A
B
C
A
B
C
D
remove it.
Figure 4-2
NOTE: It is not necessary to remove the double pulley on
the deck spindle.
6. Remove the pin that connects the blower to the discharge chute bracket tabs and remove the blower
housing.
Figure 4-2
7. Assemble the torsion spring, original discharge chute
and pin to the bracket tabs. Make sure the torsion
spring is assembled as shown so that it applies pres
sure to the discharge chute and keeps it in the down
position.
Figure 4-3
8. Remove the BAC-VAC™ from the rear of the machine.
(See Removing the BAC-VAC™ section below.)
NOTE: It is not necessary to remove the BAC-VAC™ frame
that is attached to the rear of the mower.
Never operate the mower deck with the side
deflector damaged, altered, removed or in raised
position, except when the entire BAC-VAC™ attach
-
ment or mulching system is being used.
-
A. Blower belt
B. Double pulley
C. Pin
Figure 4-2
Always operate with complete BAC-VAC™, mulching system or side discharge chute in place and in
the lowest position.
A. Flex tube
B. Inlet tube
C. Blower outlet tube
Figure 4-1
A. Tall pulley cover
B. Discharge chute
C. Torsion spring
D. Pin
Figure 4-3
Removing the BAC-VAC™
Use the following procedure when removing the BAC-VAC™
from the mower.
1. Park the mower on a flat surface. Turn the engine off,
place the steering control levers in the park brake posi
tion and remove the ignition key. Be sure the blades
have stopped before dismounting from the mower.
2. Disconnect the BAC-VAC™ frame harness from the
hopper’s wire harness.
3. Remove the flex tube from the BAC-VAC™ inlet tube.
Figure 4-1
4. Unpin the BAC-VAC™ assembly from the side mount
brackets and pivot it until the lower hooks clear the
mount spacer.
Figure 4-4
-
REV B 4-2 121913
A
B
C
A
A
B
mount brackets, slide the lower hooks off the mount tube
and roll it away from the mower.
5. Re-insert the latching pins into frame mount for storage. Secure in place with the hair pins. Tuck the BACVAC™ frame harness under the left side latching pin for
protection.
Figure 4-5
6. Roll the BAC-VAC™ away from the mower.
A. Unpin here
C. Hook
B. BAC-VAC™
Figure 4-4
NOTE: It is recommended that two people remove the
hopper from the mower mounts. The first person to hold
the hopper in place while the second person removes the
clevis pins, flat washers, and hair pins from the side
mount brackets and the BAC-VAC™ mount tubes. The
first person will then pivot the hopper away from the side
A. Frame harness B. Latching pin
Figure 4-5
121913 4-3 REV B
REV B 4-4 121913
MAINTENANCE & STORAGE
WARNING
WARNING
WARNING
WARNING
WARNING
A
B
C
A
Blower Housing and Flex Tube Maintenance
Never work on the blower assembly or mower deck
when the engine is running.
Clean flammable material from the machine. Prevent
fires by keeping the engine compartment, top of the
deck, exhaust area, battery, hydraulic lines, fuel line,
fuel tank and operator’s station clean of accumu
lated trash, grass clippings, and other debris. Always
clean up spilled fuel and oil.
The blower assembly, flex tube and blower outlet tube
(
Figure 5-1) should be kept clean and free of any accumulation of clippings or other obstructions. Occasional clogging
may also occur when working in heavy or wet grass.
-
To clean the hopper, hand wash with soap and water; rinse
with clean water.
A. Flex tube
B. Blower assembly
C. Blower outlet tube
Figure 5-1
Blower Drive Belt
Never place hands or feet into the blower chute.
There is an impeller located inside the housing that
will cause severe injury. Use a probe to clear debris
from blower chute.
Never operate the mower deck with side deflector
damaged, altered, removed or in raised position,
except when the entire BAC-VAC™ or mulching sys
tem is being used.
Prevent objects being thrown and the accumulation
of grass clippings and other debris in the engine
compartment by NEVER operating the mower deck
unless:
• BAC-VAC™ is in the catching position.
• Flex tube is in place on the blower chute and on
the BAC-VAC™ inlet tube.
• The hopper door is fully closed.
The blower drive belt (Figure 5-2) is located under the
blower belt cover. This belt is spring tensioned and should
not need adjustment.
To inspect or replace the belt, remove the blower belt cover
from the top of the deck and the blower housing.
When belt replacement becomes necessary, check the condition of the pulleys. Clean the grooves and check for excessive wear. A new belt should not run against the bottom of
groove. If it does bottom out, the pulley needs replacing.
-
A. Blower belt
cover from the top of the deck and blower housing.
tube can be cleaned by using soapy water and washing the
inside of the tube with a pressure washer. Rinse with water.
121913 5-1 REV B
To service the blower housing, remove the blower belt
To service the flex tube, remove the tube from the unit. The
Figure 5-2
BAC-VAC™ Hopper
Use a pressure washer to clean the inside and outside of
the hopper.
NOTE: Do not spray the linear actuator with the pressure
A
D
D
A
B
C
washer.
It will be necessary to lubricate the three grease points
shown in
Figure 5-3 every 40 hours or after every power
washing. NOTE: It will be necessary to remove the actuator
cover to access the center grease zerk.
tightening the screws.
Figure 5-4
Repeat the test and adjustment until the door stops its
opening motion before the actuator ratchets.
3. With the door open, press the switch on the mower so
that the door closes.
The sensor switch should have a .5 second delay. Allow
the door to close. The door should close and compress
the door/shell joint and the actuator should ratchet and
after approximately .5 seconds the ratcheting should
stop.
If the actuator does not ratchet then the horizontal
sensor switch needs to be adjusted so that less of the
plunger is exposed out of the switch’s control body.
Figure 5-4
If the actuator does not stop ratcheting then the
horizontal sensor switch needs to be adjusted so that
more of the plunger is exposed out of the switch’s
control body.
4. After the switches are correctly set, open the door and
adjust the two turnbuckles by tightening them by two
complete revolutions. Tighten the jam nuts on the
turnbuckles.
Figure 5-5
A. Grease zerks
Figure 5-3
BAC-VAC™ Hopper Switch Adjustment
Occasionally it may be necessary to adjust the sensor
switches on the hopper door. These switches, when adjusted
properly, make sure that the hopper door is closing and seal
ing properly.
1. Ensure that the BAC-VAC™ is fully mounted and that
the hopper wire harness and the mower frame harness
are connected.
2. With the hopper door closed and the ignition switch in
the “ON” position, press the control switch on the
mower so that the door opens.
Allow the door to open fully. If the actuator makes a
ratcheting sound before the door stops moving, then the
angled sensor switch needs to be adjusted so that more
of the plunger is exposed out of the switch’s control
body. The plunger depth is adjusted by loosening the two
screws, repositioning the switch body, and then
-
A. Angled sensor switch
plunger
B. Control box
C. Horizontal sensor
switch plunger
D. Screws
Figure 5-4
REV B 5-2 121913
A. Lock nut B. Turnbuckle
A
B
A
WARNING
Blower Impeller
The blower impeller shaft bearings do not require lubrica-
tion.
Normal wear can cause the impeller and edges of
the blower to become sharp. Wear gloves and use
caution when servicing the blower.
Storage
When your mower is to sit idle for a period of time, scrape
and power wash to remove the grass material from inside the
BAC-VAC™.
Check for loose or missing hardware, tighten or replace.
Also check for badly worn or damaged parts, consider replac
ing them at this time. Touch up chipped paint areas; your
dealer has aerosol spray paint available.
-
Figure 5-5
121913 5-3 REV B
REV B 5-4 121913
BAC-VAC™ Warranty Policy
Excel Industries, Inc. manufacturer (“Manufacturer”) of Big Dog® mowers makes the following warranty to the original purchaser only:
a. Big Dog
®
Mower Co. attachments and
accessories are warranted for one (1) year
(parts and labor) from date of delivery on all
materials and workmanship.
If the Purchaser discovers within this warranty
period a defect in materials or workmanship:
He must promptly notify an authorized Big
Dog® Mowers dealer of the defect. In no
event shall such notification be received by
General Information
Who Must Perform The Warranty Service
All warranty service will be performed by dealers
authorized by Manufacturer of Big Dog
vice calls and/or transportation expense of the product
to and from the authorized dealer, for warranty work,
will be paid by the owner of the product. For warranty
service contact an authorized dealer.
What Is Not Covered By This Warranty
Big Dog® Mowers, does not warranty:
Repairs made by unauthorized persons.
Damage caused by use of the Big Dog
ers for purposes other than those for which it
was designed.
Damages caused by disasters such as fire,
flood, wind, and lightning.
Damages caused by neglect, abuse, abnor-
mal use, improper or unreasonable use, accident, negligence or misuse.
Repairs or replacement resulting from the
use of unauthorized parts, accessories or
attachments.
Damage caused by foam filled or solid filled
tires.
Repairs or replacement as the result of altera-
tions or modifications.
®
mowers. Ser-
®
mow-
an authorized Big Dog® Mowers dealer later
than thirteen (13) months from date of deliv
-
ery.
Within a reasonable time after such notifica-
tion, Big Dog® Mowers will correct any defect
in material or workmanship on the Big Dog
®
mower, by repairing or replacing part(s) with
either new or used replacement parts.
Such repair, including parts and labor shall be
at the expense of Manufacturer of Big Dog
®
mowers.
Big Dog
®
mowers which has the serial num-
ber removed or made illegible.
Depreciation or damage caused by normal
wear, lack of reasonable and proper maintenance, failure to follow the product’s operator’s manual operating, maintenance and
adjustment instructions or other operational
instructions provided by Big Dog® mowers.
Seats damaged by exposure to weather ele-
ments, due to the mower being stored outside, normal wear, neglect, abuse, abnormal
use, improper or unreasonable use, accident,
negligence or misuse.
Normal maintenance parts and service
including, but not limited to, filters, fuel, lubricants, tune-up parts, belts, blades, blade
sharpening, bearings, brake or steering
adjustments.
Electric clutches that fail due to improper
engagement and disengagement practices or
normal wear.
Repairs necessary due to improper fuel, con-
taminates in the fuel system, or failure to
properly prepare the fuel system prior to any
period of non-use over three months.
Repairs necessary due to the use of fuel that
is greater than E10.
121913 6-1 REV B
Disclaimer Of Warranty
THE FOREGOIN GWARRANTIES ARE IN LIEU OF ALL
OTHER WARRANTIES, EXPRESSED OR IMPLIED,
INCLUDING BUT NOT LIMITED TO THE IMPLIED WAR
RANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE. However, if the Big Dog
®
mower is purchased as a consumer product, any
implied warranty of merchantability or fitness for a
particular purpose is limited to the duration of this
limited warranty. Some states do not allow limita
tions on how long an implied warranty lasts, so the
above limitation may not apply to you. This warranty
gives you specific legal rights, and you may also have
other rights which vary from state to state.
Limitations Of Warranties
In no case shall Manufacturer of Big Dog® mowers,
be liable for any special, incidental, or consequential
damages based upon breach of warranty, breach of
contract, negligence, strict liability in tort, or any
other legal theory.
Such damages include, but are not limited to:
Loss of profits
Loss of savings or revenue
Loss of use of Big Dog
ciated equipment
Cost of capital
Cost of any substitute equipment, facilities,
services or downtime
The claims of third parties including custom-
ers, and injury to property
Some states do not allow the exclusion or limitation
of incidental or consequential damages, so the above
limitation or exclusion may not apply to you.
®
mowers or any asso-
No Other Warranties
Unless modified in writing, signed by both parties,
and approved by the President of Manufacturer of Big
®
Dog
mowers, this agreement is understood to be the
complete and exclusive agreement between the par
ties, superseding all prior agreements, oral or written,
and all other communications between the parties
relating to the subject matter of this agreement. No
employee of Manufacturer of Big Dog
®
mowers, or any
other party is authorized to make any warranty in
addition to those made in this agreement.
Allocation Of Risks
This agreement allocates the risks of product failure between Manufacturer of Big Dog® mowers and
the purchaser. This allocation is recognized by both
parties and is reflected in the price of the goods.
Owner’s Responsibility
You must maintain your Big Dog® mowers product
following the maintenance procedures described in
your operator's manual. Such routine maintenance,
whether performed by a dealer or by you, is at your
expense.
This machine like any other powered equipment is
potentially dangerous unless properly operated. Any
operator must be cautious and keep safety in mind at
all times. Any operator, prior to using the Big Dog
®
mowers, should thoroughly familiarize himself with
the operator's manual regarding operation and safety
of the machine, as well as all safety warnings on the
machine itself.
Warranty Registration
Dealers must register the unit on-line at
https://excel.warrantysmart.arinet.com
within ten (10) days following date of pur
chase.
The date of purchase constitutes delivery.
-
REV B 6-2 121913
PARTS LIST
60" Deck Adapter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2
72" Deck Adapter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-4
Frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6
Shell. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8
Lid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-10
Linkage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-12
Frame Adapter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-14
Shell Electric . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-16
Wire Harness. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-18
Blower—552623—S/N 14040001 & Higher. . . . . . . . . . . . . . . . . . . 7-20
121913 7-1 REV B
60" Deck Adapter
1
2
3
8
9
1
12
11
13
1
14
8
9
1
15
8
4
1
5
6
7
10
1
16
17
18
19
1
15
8
20
REV B 7-2 121913
60" Deck Adapter
INDEX NO. PART NO. QTY. DESCRIPTION
1 603324 1 BLOWER CHUTE
2 025395 4 CB .375-16 X 1.00 G5 ZNY
3 114066 1 OUTLET ADAPTER
4 552081 1 CENTER DRIVE COVER (WITH DECALS)
5 601837 1 DECK DANGERS DECAL
6 601624 1 DISCHARGE CHUTE DECAL
7 792002 1 KNOB 5/16-18 X 3/4"
8 767954 8 FW .379 X .813 X .063
9 054502 6 NT .375-16 HX G5 ZNY
10 603806 1 BELT 110.5" EL A-SEC
11 074252 1 CS .500-13 X 1.50 HX G5
12 752386 1 CW .515 X 2.25 X .204 BLK
13 603311 1 DOUBLE DRIVE PULLEY
14 117758 1 BLOWER MOUNT
15 036244 4 CS .375-16 X 1.00 HX G5
16 729624 1 CS .437-14 X 2.50 HX G5 Z
17 117762 1 RIGID LINK
18 115773 1 CENTER DRIVE BRACKET
19 601069 1 CN .312-18 X .20 MAX THK
20 117699 1 BAFFLE
1. Existing hardware.
NOTES:
121913 7-3 REV B
72" Deck Adapter
1
1
11
14
2
3
4
8
12
13
15
8
18
9
8
1
9
5
6
7
10
1
19
1
20
15
8
1
1
16
17
REV B 7-4 121913
72" Deck Adapter
INDEX NO. PART NO. QTY. DESCRIPTION
1 603324 1 BLOWER CHUTE
2 025395 4 CB .375-16 X 1.00 G5 ZNY
3 114066 1 OUTLET ADAPTER
4 552082 1 CENTER DRIVE COVER (WITH DECALS)
5 601837 1 DECK DANGERS DECAL
6 601624 1 DISCHARGE CHUTE DECAL
7 792002 1 KNOB 5/16-18 X 3/4"
8 767954 10 FW .379 X .813 X .063
9 054502 6 NT .375-16 HX G5 ZNY
10 604703 1 BELT 119" EL
11 074252 1 CS .500-13 X 1.50 HX G5
12 752386 1 CW .515 X 2.25 X .204 BLK
13 603712 1 DOUBLE DRIVE PULLEY
14 117758 1 BLOWER MOUNT
15 036244 4 CS .375-16 X 1.00 HX G5
16 729624 1 CS .437-14 X 2.50 HX G5 Z
17 117768 1 RIGID LINK
18 601069 1 CN .312-18 X .20 MAX THK
19 115773 1 CENTER DRIVE BRACKET
20 117702 1 BAFFLE
1. Existing hardware.
NOTES:
121913 7-5 REV B
Frame
2
1
4
6
3
3
3
2
5
REV B 7-6 121913
Frame
INDEX NO. PART NO. QTY. DESCRIPTION
1 115706 1 FRAME
2 808485 4 RIVET NUT, 5/16-18 THREAD
3 015495 3 GREASE FITTING STRAIGHT
4 603940 2 DFS CATCHER DECAL
5 603967 2 PINCH POINT DECAL
6 808477 2 1/4-20 THREAD RIVET NUT
NOTES:
121913 7-7 REV B
Shell
2
4
3
1
3
3
16
2
6
6
5
6
5
6
7
11
10
9
12
11
13
14
11
12
15
6
5
6
SHELL
FRAME
8
SHELL
5
5
6
17
17
5
5
8
18
8
6
6
8
6
REV B 7-8 121913
Shell
INDEX NO. PA RT N O . QTY. DESCRIPTION
1 603794 1 LINEAR ACTUATOR
2 781567 2 NT .500-13 HX G8 ZY NL
3 767962 8 FW .531 X 1.063 X .175
4 721910 1 CS .500-13 X 2.75 HX G5 Z
5 058776 27 NT .312-18 HX ZY NL
6 768523 33 FW .343 X .687 X .051/.080H
7 603796 1 SHELL
8 034280 6 CS .312-18 X .75 HX G5
9 119743 1 INSIDE BAFFLE
10 115785 1 TOP BAFFLE
11 037887 13 CB .312-18 X 1.00 FULL ZN
12 115782 2 SIDE BAFFLE
13 016253 12 CB .312-18 X .75 FUL ZN
14 115701 4 VERTICAL SPANNER
15 115740 1 SKID PLATE
16 077859 1 CS .500-13 X 3.25 HX G5
17 808485 4 5/16-18 THREAD RIVET NUT
18 119745 1 INLET TUBE
NOTES:
121913 7-9 REV B
Lid
17
1
6
3
9
4
1
2
4
4
3
2
1
1
11
4
3
8
7
10
12
13
14
13
15
1
2
1
2
16
10
3
2
2
3
18
2
1
18
19
19
10
3
4
3
4
5
6
8
21
11
1
20
6
REV B 7-10 121913
Lid
INDEX NO. PA RT N O . QTY. DESCRIPTION
1 058776 30 NT .312-18 HX ZY NL
2 768523 25 FW .343 X .687 X .051/.080H
3 036236 24 CS .312-18 X 1.00 HX G5
4 712927 26 FW .344 X 1.00 X .12 HRD Z
5 115919 2 SPACER
6 601069 13 CN .312-18 X .20 MAX THK
7 115882 1 SCREEN
8 016253 3 CB .312-18 X .75 FUL ZN
9 115846 1 BOTTOM PLATE
10 037887 12 CB .312-18 X 1.00 FULL ZN
11 079210 3 FW .344 X 1.00 X .06 ZNYC
12 016410 2 CS .375-16 X 2.00 G5 ZNYC
13 767954 4 FW 0.379 X 0.813 X 0.063
14 760181 2 WHEEL
15 086660 2 NT .375-16 HX ZY NL
16 115723 1 LID FRAME
17 603797 1 LID
18 116116 2 ANCHOR BRACKET
19 115783 2 SIDE BAFFLE
20 119893 1 AIR DEFLECTOR
21 119993 1 CENTER DIVIDER BRACKET
NOTES:
121913 7-11 REV B
Linkage
3
2
6
1
4
2
5
8
7
2
2
3
5
SHELL ASSEMBLY
LID
ASSEMBLY
REV B 7-12 121913
Linkage
INDEX NO. PA RT N O . QTY. DESCRIPTION
1 603879 3 HINGE PIN
2 767954 12 FW .379 X .813 X .063
3 603332 6 CLIP
4 603113 2 CB .375-13 X 1.25 G5 ZN
5 054502 4 NT .375-16 HX G5 ZNY
6 603878 2 TURNBUCKLE
7 073858 2 FW .406 X .75 X .25 ZNYC
8 005116 2 CS .375-16 X 1.375 HX G5
NOTES:
121913 7-13 REV B
Frame Adapter
1
14
2
3
2
1
4
2
8
7
2
6
2
4
5
6
2
7
12
17
16
15
14
15
2
4
9
10
10
11
10
10
9
22
19
20
15
23
18
21
13
2
4
REV B 7-14 121913
Frame Adapter
INDEX NO. PART NO. QTY. DESCRIPTION
1 705954 6 CS .500-13 X 1.25 HS G5
2 767962 18 FW .531 X 1.063 X .175
3 116714 1 MOUNT SPACER
4 008193 8 NT .500-13 HX G5 ZNYC
5 118150 1 RS MOUNT
6 017616 6 CS .500-13 X 1.75 HX G5
7 078386 2 FW .510 X 1.75 X .18 ZNYC
8 115933 1 LS MOUNT
9 053702 2 CE .620 X 3.0 X .15 X 2.84
10 704783 4 FW .625 X 1.50 X .105 ZN
11 023036 2 HP .148 X 2.69 ZN
12 792002 2 KNOB 5/16-18 X 3/4"
13 114323 1 WEIGHT LOCK PLATE
14 086660 6 NT .375-16 HX ZY NL
15 767954 6 FW .379 X .813 X .063
16 781880 10 BUMPER
17 190278 1 WEIGHT MOUNT
18 603207 5 WEIGHT
19 604423 2 UB .375-16 X 2.00 X 4.50
20 025395 2 CB .375-16 X 1.00 G5 ZNY
21 603356 1 8" CLEAR FLEX TUBE
22 769299 1 SC #10 X .750 PHILLIPS T
23 604576 1 MUFFLER EXTENSION 1.5"
604577 1 MUFFLER EXTENSION 1.375" (NOT SHOWN)
NOTES:
121913 7-15 REV B
Shell Electric
4
2
7
3
13
5
3
1
1
6
8
9
10
11
10
9
7
6
4
3
2
3
4
1
2
4
3
12
4
14
14
15
16
15
1
17
SHELL ASSEMBLY
SHELL FRAME
18
19
20
REV B 7-16 121913
Shell Electric
INDEX NO. PA RT N O . QTY. DESCRIPTION
1 115711 1 ACTUATOR TOP LID
2 808485 5 5/16-18 THREAD RIVET NUT
3 034280 9 CS .312-18 X .75 HX G5
4 768523 9 FW .343 X .687 X .051/.080H
5 116213 1 CONTROL BOX COVER
6 601822 2 NUT PLATE .420 CENTERS
7 603937 2 PLUNGER SWITCH
8 116200 1 CONTROL BOX SWITCH
9 768515 2 FW .281 X .625 X .051/.080 HD ZN/YL
10 064329 2 CS .250-20 X .625 HX G5
11 063198 4 CS 10-24 X .75 HX FLK ZN
12 000331 4 WIRE TIE
13 603936 1 WIRE HARNESS
14 059832 3 NT #10-24 HX NL ZN
15 017079 3 FW .250 X .56 X .04 SAE Z
16 060731 3 CS 10-24 X .50 HX FLK ZN
17 115731 1 ACTUATOR BOTTOM LID
18 N/A 1 SERIAL NO. / SPEC DECAL
19 762195 1 DELAY MODULE
20 601053 2 RELAY, SEALED W/BRACKET
1. Part of the wire harness.
NOTES:
121913 7-17 REV B
Wire Harness
10
1
2
6
1
9
9
7
7
5
4
3
6
8
7
8
REV B 7-18 121913
Wire Harness
INDEX NO. PART NO. QTY. DESCRIPTION
1. Part of the wire harness.
1 553164 1 FRAME COVER (WITH DECAL)
2 600899 1 PUMP BELT WARNING DECAL
3 604049 1 HOPPER POSITION DECAL
4 797308 1 ROCKER SWITCH
5 785139 1 LS STEERING DECAL
6 601069 3 CN .312-18 X .20 MAX THK
7 767954 1 FW .379 X .813 X .063
8 036244 1 CS .375-16 X 1.00 HX G5
9 000331 7 WIRE TIE
10 603935 1 WIRE HARNESS
NOTES:
121913 7-19 REV B
Blower—552623—S/N 14040001 & Higher
1
5
2
3
2
3
2
3
2
3
2
3
4
6
13
8
9
10
11
12
2
3
5
2
3
3
2
5
5
5
5
7
14
8
3
2
15
2
3
16
REV B 7-20 121913
Blower—552623—S/N 14040001 & Higher
INDEX NO. PART NO. QTY. DESCRIPTION
1N/A1BLOWER HOUSING (NOT SOLD SEPARATELY)
2 058776 27 NT .312-18 HX ZY NL
3 768523 28 FW .343 X .687 X .051/.080H
4 119870 1 TOP WRAPPER INSERT
5 016253 27 CB .312-18 X .75 FUL ZN
6 119871 1 BOTTOM WRAPPER INSERT
7 119510 1 BLOWER IMPELLER
8 604264 2 BEARING 1.0" BORE FLANGE
9 602912 1 PULLEY
10 712919 1 FW .406 X 1.00 X .12 HRD Z
11 036244 3 CS .375-16 X 1.00 HX G5
12 322529 1 KEY .187 SQ X .750 LONG
13 114337 1 BEARING COVER
14 119874 1 BLOWER COVER
15 119741 1 GUARD
16 799130 8 CS .312-18 X .50 HXFL
NOTES:
121913 7-21 REV B
Blower—552623—S/N 14040001 & Higher
21
18
19
20
17
22
3
23
24
25
26
28
27
29
30
28
31
26
32
2
3
32
32
33
34
11
35
36
5
37
11
34
33
32
38
REV B 7-22 121913
Blower—552623—S/N 14040001 & Higher
INDEX NO. PART NO. QTY. DESCRIPTION
17 068551 2 NT .250-20 HX ZY NL
18 768515 2 FW .281 X .625 X .066
19 120615 1 COVER PLATE
20 794784 2 CB .250-20 X .75 FUL ZN
21 792002 1 KNOB 5/16-18 X 3/4"
22 036236 1 CS .312-18 X 1.00 HX G5
23 120266 1 PULLEY COVER
24 601069 2 CN .312-18 X .20 MAX THK
25 054502 1 NT .375-16 HX G5 ZNY
26 767954 3 FW .379 X .813 X .063
27 603191 1 BLOWER CHUTE INLET
28 025395 3 CB .375-16 X 1.00 G5 ZNY
29 774919 2 CS .375-16 X .50 SOC BH
30 076422 2 FW .406 X 1.00 X .06 ZNYC
31 113128 1 BLOWER INLET BAFFLE
32 086660 5 NT .375-16 HX ZY NL
33 073858 2 FW .406 X .75 X .25 ZNYC
34 704718 2 FW .406 X .688 X .060 ZNYC
35 602435 1 TORSION SPRING
36 550995 1 BLOWER LID (WITH DECALS)
37 119872 1 ABRASION GUARD
38 602674 1 CB .375-16 X 6.00 STD
NOTES:
121913 7-23 REV B
Blower—552623—S/N 14040001 & Higher
40
41
42
43
41
52
53
54
44
45
46
47
48
49
46
45
50
42
41
51
39
41
43
39
55
REV B 7-24 121913
Blower—552623—S/N 14040001 & Higher
INDEX NO. PART NO. QTY. DESCRIPTION
39 600296 3 DECK IDLER SPACER
40 791566 1 IDLER PULLEY 3.25" OD X .6
41 028118 4 FW .625 X 1.00 X .134 ZNYC
42 016642 2 CS .625-11 X 2.00 HX G5 Z
43 016972 2 NT .625-11 HX G5 ZNYC
44 781567 1 NT .500-13 HX G8 ZY NL
45 767962 2 FW .531 X 1.063 X .175
46 770867 2 BUSHING
47 109549 1 BUSHING
48 036384 1 SPRING 1/4 COIL PL 1.23
49 113406 1 BLOWER IDLER ARM
50 008573 1 CS .500-13 X 2.50 HX G5
51 602913 1 V-IDLER PULLEY
52 602757 1 BLOWER DANGERS DECAL
53 N/A 1 SERIAL NUMBER / SPEC DECAL
54 602758 1 EYES/EARS/FOOT DECAL
55 552623 1 BLOWER ASSEMBLY
NOTES:
121913 7-25 REV B
REV B 7-26 121913
INDEX
PAGE PAGE
BAC-VAC™ Assembly ................................................3-10
BAC-VAC™ Hopper ......................................................5-1
BAC-VAC™ Hopper Switch Adjustment ........................5-2
BAC-VAC™ Mount Assembly .......................................3-5
Blower Drive Belt .......................................................5-1
Blower Housing and Flex Tube Maintenance ..............5-1
Blower Impeller ..........................................................5-3
Collecting and Vacuum Pickup ...................................4-1
Converting To Side Discharge Mode ...........................4-1
Deck Adapter Kits ......................................................3-1
Final Connection ......................................................3-10
Frame Cover Assembly Installation ............................3-6
Mower Deck Preparation ............................................3-2
Mower Preparation .................................................... 3-5
Packing List .............................................................. 3-1
Parts and Service ...................................................... 1-1
Removing The BAC-VAC™ .......................................... 4-2
Safe Operation and Service Precautions .................... 2-1
Safety and Instruction Decals ................................... 2-2
Storage ..................................................................... 5-3
To The New Owner .................................................... 1-1
Unloading the BAC-VAC™ ........................................... 4-1
Using This Manual .................................................... 1-1
Warranty Registration ............................................... 1-1
Weight Assembly .................................................... 3-12
121913 i-1 REV B
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