Curtis Kubota ZD1211 Operating instructions

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INSTALLATION & OWNER’S MANUAL
Kubota ZD1211
(p/n: 1KUBZD1211PR)
Cab with A/C
(fits both 60” and 72” mowers.
Does not fit with bagger system)
Rev. E, 11/10/2021
p/n: IM-1KUBZD1211PR
While this cab kit was designed to fit on the vehicle listed above, manufacturing tolerances and vehicle
assembly may affect cab fitment. It is the responsibility of the cab installer to check all vehicle pedals and
levers for full functionality and, as required, adjust the cab fitment to prevent any interference of the cab
components with the travel of pedals or levers.
(*=Not including accessories)
Available Options:
1. Side View Mirrors (P/N: 9PM5)
2. Switch Panel (P/N: 1KUBZD1211CK) (req’d for following 2 items)
3. Front LED Work Lights (P/N: 1KUBZD1211LK)
4. Front Wiper/Washer Kit (P/N: 1KUBZD1211WK)
Approximate Installation Time *
Experienced Dealer Technician – 4 Hours
Average Dealer Technician – 6 Hours
Do-It-Yourself – 6-8 Hours
Approximate Product Specifications
Floorboard to Roof Height: 60 inches
Weight: 240 lbs.
Cab Width: 54 inches
The contents of this envelope are the property of the owner. Leave with the owner when installation is complete.
Register your new product quickly online at
Curtiscab.com/product-registration/
Download a digital copy of your installation
instructions online at Curtiscab.com/literature/
Curtis encourages all customers to register their
Curtis products. However, failure to do so will not
diminish right to warranty. Curtis Industries does not
sell or share your information with anyone else.
Curtis strives to continuously improve our products,
technical documentation, etc. Therefore, the
installation manual for this product may have been
updated after your product was packaged. The
latest revision of the installation manual can always
be found at the website above.
Premium Cab Shown with Options

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TABLE OF CONTENTS
WARNINGS, TIPS, & REQUIRED TOOLS.......................................................3
CAB INSTALLATION ...................................................................................4-21
CAB FEATURES & OPERATION ...................................................................22
CARE AND MAINTENANCE ..........................................................................23
SERVICE PARTS .....................................................................................24-29
BOLT TORQUE SPECIFICATIONS................................................................30

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Curtis cabs feature an assembly of parts designed for your vehicle which require adjustment
and alignment of components to accommodate vehicle variations and provide proper weather
protection. For accurate installation, proper operation, and years of satisfaction, please read
and understand the installation and owner’s manual fully prior to installing the cab.
From all of us at Curtis, we thank you for choosing our product.
HELPFUL HINTS:
•Refer to parts diagram found in the service parts section of this manual to help identify parts
during the assembly process.
•To assist with the cab installation, leave all fasteners loose for later adjustment unless
otherwise specified.
•Read and understand all instructions before beginning.
•Apply a silicone sealant to seal any minor gaps that may occur due to vehicle variations.
•Use caution to avoid damaging the factory installed threaded inserts or weld nuts. Begin the
thread engagement by hand to avoid or correct potential cross threading.
•Make sure the areas where the supplied self-adhesive hook Velcro will be applied are clean
and dry and at room temperature for best adhesion.
driver and passenger.
Curtis accessory weights are listed in product
add additional weight to the base vehicle. All
Curtis Cabs, blades and general accessories
ADDED
WEIGHT
brochures. Deduct the accessory's total weight
from the vehicle's rated capacity and never
exceed the vehicle's rated capacity including
Exposure to Carbon Monoxide
can Cause illness, serious injury or
death. Never operate vehicle if suspicious of Carbon Monox-
ide. Inspect exhaust system for leaks monthly. Leaks can
result from loose connections, corrosion, cracks or other
damage to the exhaust manifold. If leaks are found, repair or
replace exhaust system. Do not use vehicle until repair or
replacement is complete.
•Set of Standard and Metric Sockets (3/8” + 1/2” Drive)
•3/8” + 1/2” Drive Ratchets and Long Drive Extension
•Set of Standard and Metric Open-End Wrenches
•Set of Standard and Metric Allen Wrenches
•#1, #2, and #3 Phillips Head Screwdrivers
•Torque Wrench (1/2” Drive)
•Rubber Mallet or Plastic Dead Blow Hammer
•Bungee Cord or Twine
•Hoisting Strap
•Drill/Driver
•9/32” Drill Bit
•#2 and #3 Phillips Head Bit
•Utility Knife
•Pair of Scissors
•Shears
•Grease
•Black Silicone Sealant
•Steel Straight Edge
WARNINGS, TIPS, & REQUIRED TOOLS
TOOLS REQUIRED:
GENERAL INFORMATION BEFORE YOU START
California Health and Safety Proposition 65 Warning: This product may contain chemi-
cals known to the state of California to cause cancer and birth defects or other reproductive harm.

CAB INSTALLATION
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Step 1: (Vehicle Prep)
1.1 Park vehicle in a location accessible by an
overhead hoist.
1.2 Disconnect the negative battery terminal.
1.3 Remove the bolt from the battery clamp and
replace with a longer one from the supplied
hardware kit and re-use the nut, but do not re-
connect the battery.
Hardware Used Qty
5/16x1-1/4 Square Head Bolt 1
1.4 Remove the plastic cover around both the left and
right control sticks. (Note: the nut on the lower
screw can be loosened slightly and the panel can
then be removed. It does not need to be fully
removed from the screw.)
1.5 Install the supplied bulb rubber to the bottom
flange of the covers. The rubber should be joined
where shown.
1.6 Re-install only the left plastic cover ensuring that
the bulb on the rubber is not causing interference
with the controls or switch. The right cover will be
re-installed in a later step.
1.7 Disconnect the wires from the stud on the starter
as well as the wire plugged into the connector on
the starter.
1.8 Remove and discard three bolts from the left side
of the engine as shown.
Fig. 1.5 (Install Rubber (Left shown))
Seam
Fig. 1.3 (Replace Negative Battery Bolt)
Replace
Fig. 1.4 (Remove Covers)
Fig. 1.7 (Remove Components)
Remove
Remove
Disconnect
Remove
Loosen

CAB INSTALLATION
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Step 2: (Dynamo Installation)
2.1 Remove and save the OEM dynamo. Discard the
mounting hardware.
2.2 Remove and discard the nut and washers from the
OEM dynamo shaft.
2.3 Remove and discard the shaft from the OEM
dynamo, but keep the dynamo together when
removing to ensure spacer stays in its proper
location. If the rotor is separated from the stator
and the spacer comes loose, re-install with the
smooth convex side of spacer inwards against the
bearing.
2.4 Install the OEM dynamo onto the shaft of the
secondary dynamo provided in the kit. A rubber or
plastic mallet may be required to tap the shaft
through the bearings. Secure with the following
hardware and torque to 39.2 to 44.1 Nm (28.9 to
32.5 lbf-ft). Ensure that the flat washer is centered
over the shaft when tightening.
Hardware Used Qty
M12x24 Steel Flat Washer 1
M10x18 Split Lock Washer 1
M10x1.25 Nut 1
2.5 Position the supplied steel spacer and the thickest
shim washer from the hardware kit that will fit
between the top dynamo ears. Rotating the
dynamo shaft may allow a thicker shim to fit.
The fastening bolt should pass through the
smooth hole of the secondary dynamo, through
the spacer, shim, and then thread into the OEM
dynamo ear. Tighten fully and back off 1/2 turn.
Note: There are two of each thickness shim
washers in the kit. The exact same thickness
shim must be used between the lower pivot mount
and secondary dynamo in step 2.7.
Hardware Used Qty
Steel Spacer .75 OD x 1.145 L 1
M8x1.25x80mm Hex Head Bolt 1
M8x16 Steel Flat Washer 1
13/16 x 11/32 SS Shim x
.015”, .030”, .048” or .062” Thick 1
Fig. 2.2 (Remove OEM Dynamo Shaft)
Remove
Fig. 2.1 (Remove Dynamo)
Fig. 2.5 (Install Spacer)
Fig. 2.4 (Install OEM Dynamo onto Shaft)
Install +
Torque
OEM
Dynamo
Remove
OEM
Dynamo
Spacer
Spacer
Shim

CAB INSTALLATION
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2.6 Hang the double dynamo setup onto the vehicle
with the OEM dynamo back into its original
location with the threads on the previously
installed bolt protruding through the upper dynamo
adjustment slot. Install a nut onto the end of the
bolt, but do not tighten.
Hardware Used Qty
M8x1.25 Flange Locknut 1
2.7 Install the same thickness shim washer as was
used on the upper ears (step 2.5) between the
lower pivot mount and secondary dynamo. The
dynamo shaft may need to be rotated to allow the
shim to fit.
Install the lower pivot bolt from the front side of the
OEM dynamo. With a lock washer and then a flat
washer under the head of the bolt, pass through
the smooth hole in the OEM dynamo, through the
ear on the engine, through the appropriate
thickness stainless steel shim washer, and thread
into the secondary dynamo ear. Tighten the bolt
and then back off 1/2 turn.
Hardware Used Qty
M8x1.25x65mm Hex Head Bolt 1
M8x16 Steel Flat Washer 1
M8x14 Split Lock Washer 1
13/16 x 11/32 SS Shim x
.015”, .030”, .048” or .062” Thick 1
2.8 Tighten the upper dynamo bolt only, at this time.
Do not tighten the upper dynamo nut.
2.9 Re-install the OEM belt onto the OEM dynamo
and tension. Tighten nut on the upper dynamo
bolt first then the lower pivot bolt. Note: hold the
head of the upper bolt while tightening the nut.
Fig. 2.6 (Hang Dynamo’s, Install Locknut)
Fig. 2.7 (Install Pivot Bolt and Washer)
Fig. 2.8 (Tighten Upper Bolt)
Stainless
Shim
Locknut
Tighten
Upper Bolt
Fig. 2.9 (Re-Install Belt)
Tighten
Nut
Tighten
Bolt
Hold Bolt
Head

CAB INSTALLATION
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Step 3: (Install ROPS Mounts)
3.1 Remove the left and right hand tension screws
and clips on the ROPS and discard.
3.2 Remove the ROPS pin and bolt from the left side
and discard. Leave the right side installed at this
time.
3.3 Remove the upper bolt on the cross hose
protector as shown and discard.
3.4 Install the left ROPS mount using the following
hardware. The large bolt in the pivot hole should
be tightened just enough so that the ROPS can
still tilt without damaging the paint. The large bolt
in the hole where the pin was removed should be
installed through the bracket, but no nut installed
at this time. Tighten the smaller M8 bolt at this
time.
Hardware Used Qty
M16x2x80mm Hex Head Bolt 2
M16x30 Steel Flat Washer 3
M16x2 Locknut 1
M8x1.25x30mm Flange Bolt 1
3.5 Repeat steps 3.2, 3.3, and 3.4 for the right side.
3.6 Remove the lower M16 bolts from the previous
steps and tilt the ROPS back and re-use the bolts
to pin in the tilted position. Be careful not to
damage the engine hood if it is in the open
position. The nuts on the lower bolts will be
installed in a later step.
Fig. 3.6 (Tilt the ROPS)
Fig. 3.1 (Remove hand screws and ROPS Bolt)
Fig. 3.3 (Remove upper bolt)
Fig. 3.4 (Install Left ROPS Mount)
Remove
Remove
Remove
Bolt Only ROPS
Mount

CAB INSTALLATION
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Step 4: (Vehicle Prep)
4.1 Remove and discard the four floorboard bolts
shown in Figure 4.1. If the mower is a 60”,
remove two additional bolts in the location shown.
4.2 Cut the rubber tabs on the floormat at the bolt
locations as shown so that the hole is clearly
accessible.
4.3 Remove the pine tree clips from the floormat at
the 12 locations shown.
4.4 If installing on a 60” mower, remove and save the
tilting front cover at the front of the machine.
4.5 Install the pedal seal panel on top of the floormat
as shown. Secure to the floorpan using the
following hardware. The floorpan may need to be
lifted slightly in the front on a 60” mower to access
the center screw.
Hardware Used Qty
#10-32x3/4” Phillips Head Screw 6
#10-32 Flange Nut 6
Fig. 4.5 (Install Sealing Brushes)
Fig. 4.1 (Remove Bolts)
Fig. 4.2 (Cut Floormat)
Fig. 4.3 (Remove Pine Tree Clips)
60” Only
Cut Tabs

CAB INSTALLATION
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4.6 Install self-adhesive seal around the edge of the
floorpan as shown and cut to length. Refer to
Figure 4.6a for 60” and 4.6b for 72”.
Note: placement on the 72” machine. Seal should
follow along the white line shown.
4.7 Insert spacer bushings into the depressions where
the floorboard bolts were removed. (72” uses 4
bushings, 60” uses 6 bushings/spacers)
Hardware Used Qty
1/2” Long Spacer 4 or 6
4.8 Remove and discard the two screws securing the
voltage regulator to the frame.
4.9 Install the supplied secondary voltage regulator in
front of the OEM regulator with the following
hardware.
Hardware Used Qty
M6x1.0x70mm Hex Head Bolt 2
M6x12 Steel Flat Washer 2
1.25” Long Aluminum Spacer 2
Fig. 4.6a (Seal location on 60”)
Fig. 4.6b (Seal location on 72”)
Fig. 4.7 (Install Spacers)
Spacers
60” Only
Fig. 4.9 (Install Secondary Regulator)
Secondary
Regulator

CAB INSTALLATION
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4.10 Flip the seat forward and install the supplied
adhesive Velcro as shown. Be sure to wipe down
the surfaces where the Velcro will be adhered and
that the surfaces are at room temperature.
Apply between round seat bumpers
Apply along horizontal edge of fenders
Apply 3 sections underneath front seat support
frame member as indicated by dotted line. Velcro
must be on the underside.
Step 5: (Cabin Installation)
5.1 Lower the seat and slide the seat all the way
forward and use the knob on the seat to tilt the
seatback forward as much as possible.
5.2 Remove the doors from the cabin and set aside
carefully to prevent scratching the panels.
5.3 Remove the 3 bolts securing the compressor
bracket to the base of the shipping mount and cut
any zip ties holding the hoses and wire harness to
the shipping mount. Support the compressor
using a bungee cord or rope. Do not ever use the
hoses to support the compressor or damage may
occur.
5.4 Position a lifting strap where shown so that it sits
roughly 2” in front of the b-pillar.
Fig. 5.4 (Position lifting strap)
Fig. 4.10 (Install Velcro)
Fig. 5.1 (Move Seat forward, Rotate seatback)
Fig. 5.3 (Unbolt Compressor)