Model:
946713TURFCAT-T628D 2WD US
946714TURFCAT-T628D 4WD US
WARNING: If incorrectly used this machine can cause severe injury. Those who
use and maintain this machine should be trained in its proper use, warned of its
dangers and should read the entire manual before attempting to set up, operate,
adjust or service the machine.
FOR USE WITH OPERATION & SAFETY MANUAL 2722148
2722080 REV02
CALIFORNIA
Proposition 65 Warning
WARNING
Diesel engine exhaust and some of
its constituents are known to the State
of California to cause cancer, birth
defects and other reproductive harm.
Californie Proposition 65
Avertissement
Les échappements des moteurs diesel
et certains de leurs composés sont
reconnus par l’Etat de Californie pour
être cancérigènes, provoquer des
défauts congénitaux et d’autres dangers
en matière de reproduction.
California Advertencia
de la Proposicion 65
The engine exhaust from this product
contains chemicals known to the State
of California to cause cancer, birth
defects or other reproductive harm.
AVERTISSEMENT
L’émission du moteur de ce matériel
contient des produits chimiques que
l’Etat de Californie considère être
cancérigènes, provoquer des défauts
congénitaux et d’autres dangers en
matière de reproduction.
ADVERTENCIA
El estado de California hace saber que
los gases de escape de los motores
diesel y algunos de sus componentes
producen cáncer, defectos de
nacimiento y otros daños en el
proceso de reproducción humana.
El estado de California hace saber
que los gases de escape de este
producto contienen productos
quÍmicos que producen cáncer,
defectos de nacimiento y otros daños
en el proceso de reproducción
humana.
Turfcat
T628D
IMPORTANT MESSAGE
Thank you for purchasing this Jacobsen product. You have purchased a world class mowing product, one of the
best designed and built anywhere.
This machine comes with an Operation and Safety Manual and a separate Setup, Parts and Maintenance Manual.
The useful life and good service you receive from this machine depends to a large extent on how well you read and
understand these manuals. Treat your machine properly, lubricate and adjust it as instructed, and it will give you
many years of reliable service.
Your safe use of this Jacobsen product is one of our prime design objectives. Many safety features are built in,
but we also rely on your good sense and care to achieve accident-free operation. For best protection, study the
manuals thoroughly. Learn the proper operation of all controls. Observe all safety precautions. Follow all
instructions and warnings completely. Do not remove or defeat any safety features. Make sure those who operate
this machine are as well informed and careful in its use as you are.
See a Jacobsen dealer for any service or parts needed. Jacobsen service ensures that you continue to receive
the best results possible from Jacobsen’s products. You can trust Jacobsen replacement parts because they are
manufactured with the same high precision and quality as the original parts.
Jacobsen designs and builds its equipment to serve many years in a safe and productive manner. For longest life,
use this machine only as directed in the manuals, keep it in good repair and follow safety warnings and instructions.
You'll always be glad you did.
Textron Golf, Turf & Specialty Products
One Bob Cat Lane
Johnson Creek, WI 53038-0469
TABLE OF CONTENTS ............................................... FIGURES ............................................................................. PAGE
ASSEMBLY AND SETUP ................................................................................................................................................. 3-8
Unauthorized modifications may present extreme
safety hazards to operators and bystanders and
could also result in product damage.
Textron Golf, Turf & Specialty Products strongly
warns against, rejects and disclaims any
modifications, add-on accessories or product
alterations that are not designed, developed, tested
and approved by Textron Golf, Turf & Specialty
Products Engineering Department. Any Textron
Golf, Turf & Specialty Products product that is altered,
modified or changed in any manner not specifically
authorized after original manufacture–including the
addition of “after-market” accessories or component
parts not specifically approved by Textron Golf, Turf
& Specialty Products–will result in the Textron Golf,
Turf & Specialty Products Warranty being voided.
Any and all liability for personal injury and/or property
damage caused by any unauthorized modifications,
add-on accessories or products not approved by
Textron Golf, Turf & Specialty Products will be
considered the responsibility of the individual(s) or
company designing and/or making such changes.
Textron Golf, Turf & Specialty Products will vigorously
pursue full indemnification and costs from any party
responsible for such unauthorized post-manufacture
modifications and/or accessories should personal
injury and/or property damage result.
This symbol means:
ATTENTION!
BECOME ALERT!
Your safety and the safety of others is involved.
Signal word definitions:
The signal words below are used to identify levels of
hazard seriousness. These words appear in this
manual and on the safety labels attached to Textron
machines. For your safety and the safety of others,
read and follow the information given with these
signal words and/or the symbol shown above.
DANGER indicates an imminently hazardous
situation which, if not avoided, WILL result in death
or serious injury.
WARNING indicates a potentially hazardous situation
which, if not avoided, COULD result in death or
serious injury.
CAUTION indicates a potentially hazardous situation
which, if not avoided, MAY result in minor or moderate
injury. It may also be used to alert against unsafe
practices or property damage.
SPECIFIC TORQUES:
BLADE BOLT: 70 FT-LBS (95 Nm)
WHEEL HUB NUTS: 300 FT-LBS (407 Nm)
REAR WHEELS: 80 FT-LBS (108 Nm)
FRONT WHEELS: 55 FT-LBS (75 Nm)
2
CAUTION used without the safety alert symbol
indicates a potentially hazardous situation which, if
not avoided, MAY result in property damage
MODEL NUMBER: This number appears on
sales literature, technical manuals and price lists.
SERIAL NUMBER: This number appears only
on your mower. It contains the model number
followed consecutively by the serial number. Use
this number when ordering parts or seeking
warranty information.
Turfcat
T628D
All references to "right" or "left" or
"front" or "rear" are with respect to an
operator in the tractor seat.
TRACTOR ASSEMBLY
1. STEERING WHEEL ATTACHMENT
–Attach the steering wheel to the shaft by lining up
hole R in steering wheel with hole in shaft.
–Insert roll pin.
ASSEMBLY AND SETUP
2. TRACTOR WHEEL ATTACHMENT
a) Attach the tractor wheels to the hubs.
b) Torque the front wheel bolts to 55 ft-lbs (75 Nm)
and the rear wheel lug nuts to 80 ft-lbs (108 Nm).
NOTE - Check lug nut torque after the first 10 hours
of use and adjust if not still within the initial range.
3
ASSEMBLY AND SETUP
3. SEAT ATTACHMENT
a) Spring suspension seat
–Make sure the seat is bolted securely to the
suspension spring.
–Bolt the suspension spring securely to the center
of the seat plate using hardware provided in the
tractor loose parts bag.
–Locate the two plastic clips and attachment
hardware in the tractor loose parts bag. Attach
the clips to the bottom of the seat plate and
secure with the throttle cable passing through the
clips as shown.
Turfcat
T628D
b) Deluxe suspension seat
–Drop the four bolts at the base of the seat
suspension into the corresponding holes in the
seat plate.
–Locate the two plastic clips in the tractor loose
parts bag. Place these two clips on the front two
seat bolts protruding through the seat plate,
guiding the throttle cable through them as shown.
Secure all four seat bolts with the nuts provided.
c) Seat Switch (either seat) - Route the seat switch
cable up through the hole in the seat plate and
attach to the connector at the base of the seat.
4. Tractor and deck tire pressures should be 14 p.s.i. (1 kg/cm
5. Check battery electrolyte level and charge. Use protective equipment such as, but not limited to, goggles,
face shield, rubber gloves, and apron.
2
Deluxe Suspension Seat
Bottom side of seat plate
). Adjust if necessary.
6. Before starting the machine:
–Fill the fuel tank with diesel fuel.
–Top up the engine sump with lubricating oil if low.
–Top up the radiator with a 50% antifreeze solution if low.
–Top up the hydraulic system with oil if low.
–Lubricate at designated points (refer to the lubrication section in this manual).
–Read and understand the Operation & Safety manual, paying particular attention to the safety, control and
operation information.
4
Turfcat
ASSEMBLY AND SETUP
T628D
CUTTERDECK ASSEMBLY
1. CASTER WHEELS
a) Uncrate the deck. Remove the casters from deck mounting plates P. Reassemble to the mounting plates
with reference to the height of cut chart on the deck cover or in the cutterdeck section of this manual.
b) Place blocks under the rear of the deck so that the bottom edge is approximately parallel with the ground.
Caster mounted in "HIGH" position
2. PREPARING THE TRACTOR
a) Start the tractor. Push the lift lever forward to fully extend the deck chains. Stop the engine.
b) Line up a push arm at the inside of the tractor's axle mounting bracket, making sure arm J is offset to the
outside of the tractor and the lubrication fitting at the deck end of J faces upward. Attach to the bracket
with the head of a 5/8" bolt on the inside and lockwasher and nut on the wheel side. Tighten securely.
Repeat for other push arm.
c) Identify the 5/8" hose marked "PRESSURE" and attach the opposite end of that hose to the fitting on valve
V identified "PRESSURE". Match and attach the same way with the hose marked "RETURN". Tighten
both connections securely. Have drip pan ready to catch oil seepage.
5
ASSEMBLY AND SETUP
Turfcat
T628D
3. ATTACHING DECK TO TRACTOR
a) Remove the deck belt cover.
b) Place the deck square to and approximately 2" in front of the tractor's front wheels.
c) Run the two 5/8" hoses straight out from the tractor valve (do not cross) to the deck motor "PRESSURE"
and "RETURN" fittings. Connect these hoses with the fittings angled upward to make it easier to attach the
push arms to the deck. Leave connections snug but not tight. They will be repositioned and securely
tightened later in the setup procedure.
d) Line up the front pivot of the two push arms inside the deck hanger brackets, insert both pins P and secure
with (2) 5/16-18 X 7/8 bolts and (2) 5/16-18 nuts.
Deck motor hose attachmentPush arm attachment
4. SAFETY CHAINS
a) Verify that the bottom link of the deck chains
reach the deck bracket mounting holes. If not, the
deck cylinder may need to be further lowered with
the tractor lift lever or the chains checked for
routing problems.
b) Anchor the bottom link of each chain to the
bracket with 5/16-18X1-1/4" bolts and washers,
first making sure the chains drop straight without
twisting. Secure with locknuts.
6
Turfcat
T628D
5. SECURING DECK HOSES
a) Attach the 3/8" drain line hose to the top case
drain port of the deck motor, with the hose angled
straight back toward the tractor (not arched right
or left). Tighten securely. Tie the 3/8" hose at B
on the center 90o hose end fitting of deck valve V.
b) Rotate both 5/8" hose fittings so the hoses slope
downward and clear the rear of the motor plate by
approximately 1/4". Tighten both fittings on the
motor securely.
c) Before tightening the 5/8" hoses on their fittings,
push them down along their entire length. Then
place a wrench on a hose and another wrench on
the connection to the fitting. Turn the hose
wrench approximately 1/16 of a turn, opposite the
direction the fitting connection will be tightened.
Hold the hose in that position while tightening the
fitting connection securely. Repeat for the other
5/8" hose. This is an important step to prevent the
hoses from loosening as the deck tips up and
down at the left and right ends while mowing over
undulating ground, or movement during transport.
ASSEMBLY AND SETUP
6. HOSE VERIFICATION
a) Raise the front axle of the tractor until the deck will not touch the ground when fully lowered. Check deck
hoses in this position and in the fully raised position. Readjust if necessary using the procedures above so
that the hoses do not rub in any deck position on the tractor or deck.
b) When satisfied with hose adjustment, replace the deck belt cover.
7. HEIGHT ADJUSTMENT PINS
a) Identify with reference to the height of cut chart
on the deck belt cover or in the cutterdeck section
of this manual the desired hanger pin location.
b) With the cutterdeck slightly raised, insert an
adjustment pin in the same location for each
hanger.
7
ASSEMBLY AND SETUP
8. WEIGHT TRANSFER SPRINGS
Secure the weight transfer springs as follows to allow
them to rotate during normal deck operation:
a) Start the engine and fully raise the deck. Support
it by hooking the deck latch to the frame floor
board. Stop the engine.
b) Spring Top - For each of the two 3/8-16 x 1-1/2"
bolts, run a flanged nut to the end of the threads,
which leaves a shank section exposed. Hook one
end of a spring over the shank of each bolt. Insert
the bolts from the inside of bracket BT toward the
front of the tractor. Secure each bolt with another
flanged nut on the outside.
c) Spring bottom - Assemble large washer W and
spacer R on each of the two 3/8-16 x 1" bolts.
Place the hook on the other end of each spring
over the spacer. Insert the bolts into brackets BB
facing inward and secure each on the inside
surface with a flanged nut.
d) Slightly lift the deck to release the deck latch.
Rotate it downward out of the way.
Turfcat
T628D
Finished installation
9. LUBRICATE
FRONT
INSIDE
–Lubricate the fittings at the deck end of the two deck push arms.
8
Turfcat
T628D
MAINTENANCE
2-WHEEL2-WHEEL
Numbers above show service locations in accompanying chart.
SDIULFYTITNAUQEPYT
Arrows show lubrication points.
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9
MAINTENANCE
Turfcat
T628D
Verify proper adjustment of cutterdeck belts regularly during the first 5, 10 and 15 hours of operation.
After first 50 hours of operation, replace engine oil, hydraulic oil and related filters.
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Turfcat
T628D
CLEAN MACHINE
–The cooling system must be checked and
cleaned daily to prevent engine overheating
(more often under especially dirty conditions).
Clean the radiator, oil cooler and radiator screen
S of any grass chaff or debris using compressed
air or low pressure water (garden hose). Do not
use high pressure water - damage to radiator or
oil cooler may result.
–When washing machine with pressure spray or
steam cleaners, avoid washing bearing areas.
Cleaning solutions may penetrate bearing seals
and cause premature bearing failure.
HYDRAULIC SYSTEM
MAINTENANCE
–Check hydraulic fluid level in the reservoir sight
glass. Normal level is approximately in the
center.
–Every 400 working hours, change the hydraulic
fluid and filter. The fluid is drained from a capped
port located near the bottom of the reservoir. The
filter is a spin-on cannister type.
BATTERY MAINTENANCE
Check battery fluid level periodically. If low, top up
with distilled water. When working with battery fluids,
always use protective equipment, such as, but not
limited to, goggles, face shield, rubber gloves, and
apron.
11
MAINTENANCE
ENGINE OIL
See Engine Manual for manufacturer's
recommendations. Before using the machine for the
first time, check the oil level in the engine crankcase
with the crankcase dipstick. When checking oil level,
make sure the machine is on level ground.
To change engine oil:
1. First warm up the engine. Shut off engine when
warm, remove oil drain plug P and drain the oil
from the sump.
2. Clean plug and replace.
3. Re-fill sump with the recommended engine oil.
4. Always check level of oil on the dipstick. To
obtain the correct measurement, the machine
should be on level ground.
Turfcat
T628D
NOTE: After the oil has been added, wait one minute
and then check level of oil again with the dipstick.
To change engine oil filter:
The oil filter cartridge O is easily reached from the
right side of the tractor. It should be replaced
complete with each oil change. Apply a thin film of oil
to the seal when replacing the cartridge and check for
leaks after starting the engine. Top off oil if
necessary.
AIR CLEANER
Clean and replace the air cleaner element as
specified in the service chart. Uneven running, lack of
power or black exhaust fumes may indicate a dirty air
cleaner.
To replace air cleaner element:
1. Unclamp end cover Y and remove existing
cleaner element.
2. Insert new element Z and replace end cover.
Ensure arrows on end cover are pointing
vertically upwards.
12
Turfcat
T628D
WATER FUEL SEPARATOR
The machine is equipped with a water fuel separator
that traps water in the fuel. If the water is not removed
from the fuel system, extensive damage can occur in
the fuel injection system.
Water will collect at the bottom of the see-through
bowl A and appears a different color than the fuel.
Remove the water as follows:
1. Drain water by opening the self-venting drain
valve B and allowing all water to escape.
Re-tighten drain valve.
2. The entire water separator assembly can be
removed by turning counterclockwise while
gripping black grip C
NOTE: Always bleed the fuel system of air after
removing the water from the separator.
MAINTENANCE
MAINTENANCE
R
13
MAINTENANCE
BLEEDING AIR FROM FUEL
If any service has been performed on the fuel
manager water separator or fuel filter, first purge air
from the fuel manager (Steps 1-3) otherwise skip to
Step 4.
1. Loosen the air vent D one to two turns.
2. Fully depress hand primer pump plunger E until
all air has escaped.
NOTE: Step 2 may take up to 60 pumps.
3. Close the air vent D.
4. Bleed the air in the fuel lines from the fuel
manager to the injector pump by loosening the air
vent bolt F on the injector pump.
5. Set the parking brake.
6. Turn the keyswitch, cranking the engine until all
air has escaped. Turn keyswitch to the off
position.
7. Tighten the air vent bolt F.
Turfcat
T628D
HAND PRIMER PUMP
The hand primer pump is used to purge air from the
fuel system. The entire pump assembly is
replaceable if necessary. See parts section for
service parts.
1. Remove the small black retaining ring H carefully
as it is spring loaded.
2. Remove hand pump components and replace
with new components
14
Turfcat
T628D
FUEL FILTER
1. To change the fuel filter only, first remove the
see-through water separator bowl. See water
fuel separator procedure on the previous page.
2. Remove the large black retaining ring G.
3. Pull the filter element straight down. Do not twist
as the filter element is not threaded.
4. Dispose the old filter element according to local
laws.
5. Align key in filter element with the slot in the
header and push the new filter element up into
the filter head.
6. Place retainer ring G. Hand tighten retainer ring
until it clicks and the arrows line up in the center
of the header.
MAINTENANCE
NOTE: Always bleed the fuel system of air after
changing the fuel filter.
COOLANT
The quantity of fluid in the coolant system is indicated
by the fluid level in overflow bottle O.
–Keep the overflow bottle approximately 1/4-1/2
full.
–When filling, use a 50/50 mixture of antifreeze
and water.
HYDRAULIC NOTES
–Lower implements attached to lift arms to relieve hydraulic pressure from system before servicing.
–When servicing hydraulic pipe fittings, do not use teflon tape. Use a liquid sealant that will dissolve into
the system.
–Make sure all hydraulic connections are tight before applying pressure to system.
When checking for leaks, do not use your hands to attempt to feel a spray. Instead, pass an object like
cardboard over hydraulic system components to visualize a spray. Escaping hydraulic fluid can be under
sufficient pressure to penetrate skin and cause serious injury. If injured by escaping hydraulic fluid, see a
doctor at once. Serious infection or reaction can develop if proper medical treatment is not administered
immediately.
2-4548480SEAL1
2-4648043-03C S CUP,OUTER BRG2
2-4748043-04C S CONE,OUTER BRG2
2-4864163-26WASHER,.766 ID X 1.6254
2-4964025-20NUT-HEX 3/4-16 SLOT U2
2-504114180-01 MOTOR-WHEEL W/CHECK 1
(INCLUDES ITEM 51)
(SEE FIGURE 8 FOR SERVICE PARTS)