Kubota RTV 400 CAB Operating instructions

INSTALLATION & OWNER’S MANUAL
Rev. C, p. 1 of 18
KUBOTA RTV 400 CAB
(Not for use on RTV 500)
These instructions are for installation of the
complete cab as well as the modular components.
INSTALLATION TIME for entire cab: 1 to 1 1/2 HOURS (excluding any accessories)
DESCRIPTION: PART NO.:
Complete Cab Kit V4409 / 77700-V4409 (this contains all 5 kits listed below)
Mount Kit V4310 / 77700-V4310 (required to install any of the following individual kits)
Windshield Kit V4368 / 77700-V4368
Rear Panel Kit V4428 / 77700-V4428
Roof Kit V4312 / 77700-V4312
Door Kit V4429 / 77700-V4429
This cab has been modularly designed so that components may be quickly detached and
attached depending upon conditions. Any component may be used independently with
the required Mount Kit (p/n: V4310).
Manual p/n: 77700-03686
(Revised: 10/31/2017)

SAFETY INFORMATION:
!WARNING: Cabs, blades, and general accessories add additional weight to the base
vehicle. Deduct the accessory’s total weight from the vehicle’s rated capacity including driver
and passenger. Never operate the vehicle outside of its rated weight capacity.
!WARNING: Exposure to Carbon Monoxide can cause illness, serious injury
or death. Never operate vehicle if suspicious of Carbon Monoxide. 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.
!WARNING: Serious injury or death:
 This cab enclosure does not provide protection from rollover or other accidents.
 This cab enclosure does not provide protection from flying objects including golf balls.
 This cab enclosure does not provide protection from lightning. When lightning threatens, take
cover and do not operate vehicle.
SAFETY LABELS:
Safety Label Location:
See the illustrations on the following page for complete text of safety label message:
1) WARNING - K7561-65412
2) WARNING - CUR192
NOTICE: item (3) is located in 4 places total, on each side of the panel as shown.
3) CUR193
4) Decal: OHSA ROPS serial number
NOTICE: The ROPS (Roll-Over Protective Structure) serial number label is covered by the
cab and may be viewed by removing the rear panel.
5) WARNING - 77700-03684
p. 2 of 18

SAFETY LABELS:
1) WARNING - K7561-65412 2) WARNING - CUR192
3) CUR193
4) Kubota ROPS serial number
5) WARNING - 77700-03684
TOOLS REQUIRED:
p. 3 of 18
Set of standard and metric sockets
Set of standard and metric open end wrenches
One 3/8” Drive Ratchet
One 3/16” Allen Wrench (preferably “T” handle
type)
Needle Nose Pliers
!WARNING:
K7561-65412
TO AVOID PERSONAL
INJURY OR DEATH:
1. Do not remove Roll-Over
Protective Structures
(ROPS) for any
application.
2. Do not modify or repair
a ROPS because
welding, grinding,
drilling or cutting any
portion may
weaken the
structure.
WARNING:
PINCH
POINT
PULL PINS TO OPEN & CLOSE COWL
!WARNING:
To Prevent Serious Injury or Death.
This cab has been tested and approved for the RTV400 only.
Use of this cab on other models could result in excessive carbon monoxide exposure.
Do not remove or alter this tab. 77700-03684
CAB INSTALLATION
BEFORE YOU START
HELPFUL REMINDERS:
A. Refer to the parts diagram towards the back of each
section to help identify parts during the assembly
process.
B. To assist with the cab installation, leave all bolts
loose for later adjustment unless otherwise specified.
C. Read and understand all instructions before beginning.
D. Use caution to avoid damaging the factory installed
weld nuts or threaded inserts. Begin the bolt
engagement by hand to avoid or correct potential
cross threading.
KUBOTA
Manufacturing of
America Corp. Gainesville GA.
Machine Model No.
RTV500 / RTV400ci
ROPS MODEL
No.
SFRTV-5
ROPS Serial
No.
XXXXX
ROPS Gross Machine Weight
2314 lbs. (1050 kg)
ROPS meets requirements of
*OHSA Part 1928.52
*SAE J1124

p. 4 of 18
1.1 Per fig. 1.1, if installing just a roof by itself, use just
the upper mounts shown (not the front mounts or the bush-
ings). If installing a windshield or doors, use all the mount kit
components shown.
1.2 Per fig. 1.2, remove and discard the four (4) original
equipment bolts and washers from the cross members on the
driver’s side. New bolts and lock washers are provided. Loos-
en the four (4) bolts securing the passenger side, but leave
them installed at this time. Install the upper mount oriented as
shown in figure 1.2. Install the new bolts (M10 x 1.25 x
35mm long) and split spring washers (M10) into the original
equipment factory installed weldnuts (not shown). Use cau-
tion to avoid cross threading the weldnuts. Start thread en-
gagement by hand. Leave bolts loose.
1.3 Per fig. 1.3, if not installing a door kit, you will not
have the hinge plate mount. If installing a door kit at this time,
orient and install the hinge plate mount from the door kit as
shown. Fasten the rear of the upper mount using the new bolts
(M10 x 1.25 x 35mm long) and split spring washers (M10).
Use caution to avoid cross threading the weldnuts. Start thread
engagement by hand.
1.4 Repeat steps 1.2 and 1.3 for passenger’s side.
1.5 Torque all eight (8) bolts to 48-55 N-m, 36-41 ft-lbs, or
4.9 to 5.7 kgf-m.
1.6 If installing just a roof, these two upper mounts are the
only mount kit components necessary. Proceed directly to the
roof section on page 12.
Fig. 1.1 (contents of mount kit)
MOUNT KIT (p/n: V4310 / 77700-V4310)
This kit is required to mount the cab
or any of the individual assemblies.
Fig. 1.2 (view of inside front corner of driver’s side)
remove and discard original
bolts and washers from here
Fig. 1.3 (view of inside rear corner of driver’s side)
remove and discard original
bolts and washers from here
hinge plate mount (used
only if installing a door kit)

p. 5 of 18
1.7 Per fig. 1.7, remove and discard the two original
equipment bolts and nuts from the front ROPS (Roll-
Over Protective Structure) tubing. New bolts, nuts, and
steel bushings are provided. Have the following hard-
ware ready: two 3/8-16 x 1-3/4” long button head bolts,
two steel bushings, and two locknuts (3/8-16). Per fig.
1.7, orient and install the front mount on the driver’s side
as follows: the steel bushings are to be installed in the
upper outside cavity and the lower inside cavity. These
are to fill voids and support the ears on the front mount.
See fig. 1.7.1 for a completed view of this assembly. In-
stall the new nuts into the open cavities. Install the new
bolts through the ears of the front mount, through the
steel bushings, through the ROPS tubing and engage into
each of the locknuts.
1.8 Repeat step 1.7 for passenger’s side.
1.9 Torque these four (2/side) front mount bolts to 48-
55 N-m, 36-41 ft-lbs, or 4.9-5.7 kgf-m.
Fig. 1.7.1 (view of driver’s side front mount from driv-
er’s seat)
Fig. 1.7 (view of driver’s side from driver’s seat)
remove and discard
original equipment
bolts and nuts from
this joint
ears
bushing
locknut
ref.: inside surface
of ROPS tubing)
note: steel bushing
is underneath this
sheet metal ear
ref.:
nut
ref.: this tab to
be down here
as shown

P. 6 OF 18
PARTS LIST
V4310 / 77700-V4310 RTV 400 MOUNT KIT

2.1 Fig. 2.1 shows the only item included in the wind-
shield kit. Note: inside view of windshield assembly shown.
2.2 Orient the windshield as shown in fig. 2.1. Hook the
two upper pins into the receiving slots in the front of the up-
per mounts (see fig. 2.2). Snap the lower two latches onto
the pins on the inside of the front mounts until they are fully
engaged. Two (2) clicks means fully engaged. If adjustment
is needed, use a 3/16” Allen wrench and a 1/2” open ended
wrench to reposition the pin in the slotted front mount.
2.3 Three areas are adjustable if a better seal is desired.
First be sure that the upper pins are seated at the bottom of
the receiving slots in the upper mounts before beginning any
adjustments. The lower latches have adjustment in and out
(see fig. 2.3). The lower pins on the front mounts have ad-
justment up and down. The upper pins have adjustment in all
directions due to an oversized hole. Make the necessary ad-
justments until you achieve “double click” engagement. If
the issue is with the seal against the ROPS tubing, adjust the
lower latches in or out. If the issue is with the seal against the
hood, adjust the pins up or down.
p. 7 of 18
WINDSHIELD KIT (p/n: V4368 / 77700-V4368)
Note: Mount Kit (p/n: V4310) is required
in order to mount this windshield kit.
Fig. 2.2 (description of slot usage)
ref.: slots for roof installation
slots for windshield installation
Fig. 2.3 (view from inside of driver’s side)
use an Allen wrench here to adjust
slotted
for
adjust-
ment
Fig. 2.1 (contents of windshield kit)

2.4 Note: the entire bottom portion of the windshield
assembly is designed to pivot up and out of the way when the
hood needs to be opened. On each side of the cowl there is a
finger pull pin. Disengage and re-engage accordingly. Note:
it may be necessary to squeeze the cowl to compress the rub-
ber gasket in order to get the pins to re-engage.
2.5 Tip: removal of any component that has latches can
be made easier for a single person if the latch is opened to
disengage the receiving pin then manually closed as shown
in fig. 2.5 so the weight of the component does not cause the
latch to continually re-engage on the receiver pin when you
try to work the opposite side of the vehicle by yourself. Push
at location “c” to close and pull at location “o” to open. Be
sure to open latches before re-installing.
p. 8 of 18
Condition: Explanation/Solution
Latches will not double click Be sure upper pins are fully
seated in slots of upper mounts.
Move latches backward in slots.
Gap along ROPS at bottom Move latches forward.
Gap along ROPS at top Move upper pins forward.
Gap along hood Move latches forward.
Move lower pins down.
Move upper pins up.
Troubleshooting the windshield
Fig. 2.4 (hood access)
finger pull pin
Fig. 2.5 (latch shown closed)
location “o”
to open
location “c”
to close
CLOSED

P. 9 OF 18
V4368 / 77700-V4368 RTV 400 WINDSHIELD KIT
PARTS LIST

p. 10 of 18
3.1 Fig. 3.1 shows the contents of the rear panel kit.
Note: inside view of rear panel assembly shown.
3.2 Loosen the two bolts of the rear panel lower
mount assembly to allow the inner and outer brackets to
slide freely.
3.3 Lift the dump bed. Per fig. 3.3, install the rear
panel lower mount assembly as follows: insert the spring
clip nut into the empty hole above the upper center seat
back bolt (oriented so the threads are towards the front of
the vehicle), temporarily remove the upper center seat
back bolt, place the rear panel lower mount assembly in
position and oriented as shown, re-install the original
equipment seat back bolt into the lower slot. Use caution
to avoid cross threading the threaded insert. Start thread
engagement by hand. Install a new 1/4-20 x 3/4” long
hex head bolt and 1/4” steel flat washer into the upper
slot of the assembly (engaging the threaded spring clip
nut). Tighten both bolts.
3.4 Orient the rear panel assembly with striker pins
toward the inside of the cab. Per fig. 3.4, hook the two
upper pins into the receiving slots in the rear of the upper
mounts. Install two 1/4-20 x 3/4” long hex head bolts and
two 1/4” steel flat washers through the bracket in the rear
panel into the outer bracket to the rear panel lower mount
and tighten. Be sure top pins are fully seated and tighten
the two bolts of the lower mount assembly.
3.5 Peel protective film off window.
REAR PANELKIT (p/n: V4428 / 77700-V4428)
Note: Mount Kit (p/n: V4310) is required
in order to mount this rear panel kit.
Condition: Explanation/Solution
Gap along ROPS at top Move lower mount outer
bracket down.
Gap along ROPS at bottom Move rear panel forward.
Rear Panel and Mount Assembly Move lower mount outer
don’t line up bracket left or right.
Troubleshooting the rear panel Fig. 3.3 (view from rear of passenger’s side)
original
equipment
seat back
bolt
new bolt, washer, and
spring clip nut
ref.: bed of vehicle
Fig. 3.1 (contents of rear panel kit)
Fig. 3.4 (view of upper rear driver’s side)
slot for
rear
panel
pin