Briggs & Stratton Ferris IS5100Z Series Manual

IS5100Z Series - 33 HP Diesel
61” iCD Mower Deck
1
5102588
Rev. Date: 03/2010
Dealer Setup
& Adjustment Instructions
Ferris IS5100Z Series - 33 HP Diesel
61” iCD Mower Deck
TABLE OF CONTENTS:
SETUP PROCEDURES
Quick Setup List................................................................2
Uncrating............................................................................3
Battery Installation ............................................................4
Tractor Assembly ..............................................................4
Motion Control Handle Assembly ....................................4
Seat Assembly.................................................................4
Roll bar Assembly.............................................................5
Assemble Retainer Pins ..................................................5
Assemble Top Loop.........................................................5
Install the Roll Bar ...........................................................5
Check Fluid levels.............................................................7
Check Engine Oil Level ...................................................7
Check Hydraulic Oil Level ...............................................7
Check Antifreeze Level....................................................7
Check Tire Pressure..........................................................8
Mower Assembly ...............................................................8
Check Torque - Mower Blades........................................8
Adjust Deck Lift Rod Timing ............................................9
Level the Mower Deck ...................................................10
Deck Lift Spring .............................................................11
Install Deck Drive Belt ....................................................12
Adding Fuel......................................................................13
Lubrication.......................................................................14
Priming The Fuel System ...............................................15
Starting The Engine ........................................................16
Perform Safety Checks...................................................16
Functional Tests ............................................................16
Safety Interlock System.................................................16
ADJUSTMENT PROCEDURES
Seat Adjustment ..............................................................17
Motion Control Handle Adjustment...............................17
Speed Balancing Adjustment.........................................17
Neutral Adjustment .........................................................18
Neutral Position & Return Spring Adjustment .............18
Neutral Position Adjustment ..........................................18
Return Spring Adjustment..............................................18
Parking Brake Adjustment .............................................19
Suspension Adjustment .................................................20
ATTENTION SETUP PERSONNEL:
Sections and items denoted by the Setup symbol
provide the information necessary to fully assemble,
test, and prepare the units described above for
delivery to your customers.
A Quick Setup List is provided on page 2 of this booklet
to help you identify and check that the items have been
performed.
Additional information concerning functional tests,
general adjustment procedures, and the location
of normal lubrication points are included in these
instructions.
Although all required lubrication and normal adjustments on
factory-assembled components are done at the factory, this
additional information is provided to assist you in ensuring that
each unit is delivered to the customer in proper working order.
The safety warnings provided in this guide and
in the operator’s manual included with the unit
contain important information that must be obeyed
when assembling, setting-up, operating, servicing,
transporting, or storing the unit.
These warnings are highlighted by the safety alert triangle
symbol shown above, which signifies that an important safety
message is being provided.
You must read, understand, and follow these warnings and
instructions, and use safe shop and work practices at all
times while working on or around this unit and all other
outdoor power equipment.
Model No. Description
Tractor
5900934 IS5100ZC33D61
This Dealer Setup Instruction covers the following products:
Not for
Reproduction

2
IS5100Z Series - 33 HP Diesel
61” iCD Mower Deck
Quick Setup List
Page Setup Procedure Steps to Performs
3Uncrating ❏Remove Crate & Banding.
❏Loosen Hydraulic Release Valves.
❏Inflate Rear Tires.
❏Install Rear Bumper in Operating Position.
❏Release Parking Brake and Roll Tractor Forward off Skid.
❏Tighten Hydraulic Release Valves.
4Battery Installation ❏Install & Secure Battery.
4Tractor Assembly ❏Assemble the Motion Control Handles.
❏Assemble the Seat.
5Roll Bar Assembly ❏Assemble the Retainer Pins.
❏Assemble the Top Loop.
❏Install the Roll Bar.
7Check Fluid Levels ❏Check Engine Oil Level.
❏Check Hydraulic Oil Level.
❏Check Antifreeze Level.
❏Check Hydraulic Release Valve.
❏Check Tire Pressure.
8Mower Assembly ❏Check Blade Bolt Torque
❏Adjust Deck Lift Rod Timing.
❏Level Mower Deck.
❏Install Deck Drive Belt.
15 Lubrication &
Fuel Preparation
❏Add fuel.
❏Lubricate all Grease & Oil Points.
❏Prime the Fuel System.
❏Start the Engine.
18 SAFETY CHECKS ❏Check for LOOSE HARDWARE.
❏Check all OPERATOR CONTROLS.
❏Perform SAFETY INTERLOCK SYSTEM CHECK.
Register Product ❏To register the product: log onto www.thepowerportal.com,
select the appropriate brand, click “My Resources,” select the
“Product Registration and Rebate” icon and then the “New
Product Registration / Rebate” tab. Fill out and submit the
online product registration form.
Not for
Reproduction

IS5100Z Series - 33 HP Diesel
61” iCD Mower Deck
3
Uncrating
1. Using a reciprocating utility saw or equivalent, cut
crate away from bottom skid. Remove crate. Remove
shrink-wrap plastic.
2. Cut banding from front and rear tractor axles. Cut
banding from mower rollers. Remove mower deck
from the bottom skid.
3. Open the hydraulic release valves. To open the
release valves, turn the right-hand release valve,
which is located on top of the right-hand pump,
counter-clockwise 2 full turns MAX. Then turn the left-
hand release valve, which is located on the bottom
of the left-hand pump, counter-clockwise 2 full turns
MAX. See Figure 1 for valve location.
4. Inflate rear tires to 18 psi (1,24 bar).
5. Remove the rear bumper from the shipping position
(B, Figure 2). With same hardware, install the
bumper in operating position (A). Tighten the
hardware securely.
6. Push down on parking brake lever (A, Figure 3) to
release parking brake.
7. Be sure there are no nails or sharp objects on bottom
skid to puncture the tractor’s tires. Roll the tractor
forward off the bottom skid.
8. After moving the tractor, re-engage the pumps (drive
position) by turning the release valves clockwise and
tighten to 80-120 in/lbs (9-13.5 N.m.).
IMPORTANT NOTE
When cutting crate from bottom skid,
use caution around tractor tires and
mower rollers.
Figure 3. Disengaging the Parking Brake
(lever shown in disengaged position)
A. Parking Brake Lever
A
Figure 1. Hydraulic Release Valve Location
A. Hydraulic Release Valve (Right-hand side shown)
A
Figure 2. Bumper Install
A. Operating Position
B. Shipping Position
A
B
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IS5100Z Series - 33 HP Diesel
61” iCD Mower Deck
Tractor
Assembly
Motion Control Handle Assembly
1. Remove the handles and mounting hardware from
the handle bar box.
2. Assemble the control handles to the square bases
using the 5/16-18 x 1” bolts, lock washers and flat
washers. There are two sets of holes available for
the handle height. Assemble the handles in the
same set of holes for both sides.
NOTE: There are a LEFT-HAND and a RIGHT-HAND
control handle. When assembled to the base, the
handle should tilt forward as shown in Figure 5.
Seat Assembly
1. Unpack the seat.
2. Install the seat onto the seat mount plate and secure
with the 5/16-18 nylock flange nuts.
Figure 5. Control Handle Installation
(right-hand side shown)
A. 5/16-18 x 1” Bolts, Lock Washers and Flat Washers
A
Figure 4. Battery Installation
A. Negative Cable
B. Positive Cable
C. Hold-Down Strap
AB
C
Battery Installation
Install Battery
1. Raise the seat plate to expose the battery
compartment.
2. Connect the red positive battery cable (B, Figure 4)
to the positive battery post.
3. Connect the black negative battery cable (A) to the
negative battery post.
WARNING
BATTERY SAFETY RULES
• Battery acid causes severe burns. Avoid contact
with skin.
• Wear eye protection while handling the battery.
• To avoid an explosion, keep flames and sparks
away from battery, especially while charging.
• When installing battery cables,
CONNECT THE POSITIVE (+) CABLE FIRST and
negative (-) cable last. If not done in this order,
the positive terminal can be shorted to the frame
Not for
Reproduction

IS5100Z Series - 33 HP Diesel
61” iCD Mower Deck
5
Roll Bar Assembly
Assemble Retainer Pins
1. Unpack the roll bar and hardware from the box.
2. Assemble the foam ring (A, Figure 6) onto the
retainer pin (B).
3. Loop the snap end of the lanyard (C) through the
retainer pin handle and snap together.
4. Install the lanyard anchor (D) onto the lanyard.
5. Install the clevis pin (E) onto the loop end of the
lanyard as shown in Figure 6.
Assemble the Top Loop
1. Install the plastic cap (B, Figure 7) into the end of the
top loop tube (A). Repeat for other end of tube.
2. Make sure the rubber stop (C) is properly seated
against the inside of the pivot mount. See Figure 7.
Figure 6. Assemble the Retainer Pins
A. Foam Ring
B. Retainer Pin
C. Lanyard
D. Lanyard Anchor
E. Clevis Pin
A
B
CD
E
Figure 7. Assemble the Top Loop
A. Top Loop Tube
B. Plastic Cap
C. Rubber Stop
A
B
C
Install the Roll Bar
1. Make sure the roll bar sockets are clear of any
obstructions, wires, foreign objects, etc.
2. Install the roll bar upright tubes (A) into the sockets
as shown in Figure 8. Loosely install the 1/2-13 x 4”
bolts and hex side lock nuts (B, Figure 8).
NOTE: See Figure 9 for proper upright tube orientation.
Figure 8. Installing Roll Bar
A. Upright Tubes (LH Side Shown)
B. 1/2-13 x 4” Bolts & 1/2-13 Hex Side Lock Nuts
A
B
Snap End
Loop End
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6
IS5100Z Series - 33 HP Diesel
61” iCD Mower Deck
3. Install the top loop (A, Figure 10) onto the upright
tubes (B). From the outside, install the 1/2” x 3”
bolt (C) through the retainer pin assembly (D), then
through the top lop and upright tube and shown in
FIgure 9. Loosely install the 1/2” side lock nut (E).
Repeat for other side.
4. Tighten the 1/2” hardware securing the upright tubes
to the frame (see Figure 8). Tighten the hardware
until there no movement in the upright tubes.
5. Tighten the 1/2” x 3” bolts and hex side lock nuts
(C & E) securing the top loop (A) to the upright tubes
(B). Do not over-tighten. The top loop should pivot
snugly with the retainer pins removed.
6. Raise the top loop (A) until the rubber stops (F)
contact the upright tubes.
7. Push or pull the top of the roll bar forward against the
rubber stops and install the retainer pins and hair pin
clips to secure the roll bar in the raised position.
F
AC
D
B
Figure 10. Install Top Loop
A. Top Loop
B. Upright Tube
C. 1/2” x 3” Bolt GD.5
D. Retainer Pin Assembly
E. 1/2” Side Lock Nut
F. Rubber Stop
A
CDEEDC
BB
Figure 9. Proper Orientation of Upright Tubes
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IS5100Z Series - 33 HP Diesel
61” iCD Mower Deck
7
Figure 11. Check Antifreeze Level
A. Radiator Pressure Cap
Check
Fluid Levels
Check Engine Oil
1. Use the dipstick (A, Figure 12) to check the engine
oil level. If necessary add engine oil. Check
engine manufacturer’s owner’s manual for oil
recommendations. See (B, Figure 13) for oil fill cap
location.
Check Hydraulic Oil Level
NOTE: Do not open the hydraulic oil reservoir unless oil
is being added.
1. Visually check that the hydraulic oil level is filled to
the recess area (A, Figure 13) of the hydraulic oil
reservoir.
3. If necessary, remove the reservoir cap (B, Figure
13) and add either Mobil 1™, 15W-50 synthetic
oil or Castrol Syntec™ 5W-50 oil. DO NOT use
conventional oils. Make sure area around the filler
neck is free of dust, dirt, or other debris.
Check Antifreeze Level
The engine coolant level and quality should be checked
before each use, when the engine is cool and off.
1. Remove the radiator pressure cap (A, Figure 11) to
check the fluid level.
2. Coolant level should be 1/2” (13mm) below the
bottom of the filler tube. If coolant level is low, add
coolant until level is 1/2” (13mm) below the bottom of
the filler tube. Proper coolant mix is a 50/50 mixture
of ethylene glycol and distilled water. See engine
owners manual for antifreeze specifications.
3. Check the coolant level in the radiator overflow bottle
(A, Figure 14). If coolant level is low, add coolant
until level is at the “FULL” line. Proper coolant mix
is a 50/50 mixture of ethylene glycol and distilled
water. See engine owners manual for antifreeze
specifications.
Figure 12. Check Engine Oil Level
A. Dipstick
A
Figure 14. Check and Fill
A. Radiator Overflow Bottle
B. Oil Fill Cap
A
A
Figure 13. Hydraulic Oil Reservoir
A. Tank Recess (“FULL” level)
B. Cap
B
A
B
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Reproduction

8
IS5100Z Series - 33 HP Diesel
61” iCD Mower Deck
Mower
Assembly
Check Torque - Mower Blades
1. Check that blades are installed with the tabs pointing
up toward deck as shown in Figure 16. Torque bolts
to 70 ft.lbs. (94 N.m.).
Tire Pressure
Front 25 psi (1,72 bar)
Rear 18 psi (1,24 bar)
Figure 15. Checking Tire Pressure
Check Tire Pressures
Tire pressure should be checked periodically, and
maintained at the levels shown in the chart. Note
that these pressures may differ slightly from the “Max
Inflation” stamped on the side-wall of the tires. The
pressures shown provide proper traction, improve cut
quality, and extend tire life.
Figure 16. Check Blade Torque
WARNING
Mower blades are sharp. For your personal
safety, do not handle mower blades with bare
hands. Careless or improper handling of blades
may result in serious injury. Blade mounting
bolts must each be installed with a flat washer
then securely tightened. Torque blade mounting
bolts to 70 ft.lbs. (94 N.m.)
Not for
Reproduction

IS5100Z Series - 33 HP Diesel
61” iCD Mower Deck
9
Adjust Deck Lift Rod
Timing
1. Park machine on a flat, level surface. Disengage the
PTO, stop the engine and engage the parking brake.
Rear tires must be inflated to 18 psi (1,24 bar); front
tires to 25 psi (1,72 bar).
2. To check the inner lift rod timing, measure and
record the distance between the inner lift pivots and
the inner rod pivots. Repeat for other side of unit.
See Figure 17.
3. To check the outer lift rod timing, measure and
record the distance between the outer lift pivots and
the outer rod pivots. Repeat for other side of unit.
See Figure 17.
4. If the measurements for the inner rods are equal,
and the measurements for the outer rods are
equal, no further adjustment is required. If the
measurements are NOT equal (greater than 1/8”
(3,17mm) difference), adjustment is required,
continue with Step 5.
5. Lock the deck lift pedal in the 6” (15,2cm) position.
Remove the cutting height adjustment pin (A, Figure
18) and lower the mower deck.
6. To ensure that the deck is in the lowest position,
push the pedal by hand towards the rear of the unit
and install the height adjustment pin in the 3” (7.6cm)
position to hold in place.
7. Block up the mower deck until all hanger chains are
slack.
8. Refer to Figure 19. To adjust the inner lift rod,
loosen the jam nut on the front ball joint then
remove the 1/2” hardware fastening the ball joint
the the lift pivot arm. Turn the ball joint clockwise
to shorten the distance between the rod pivots or
counterclockwise to lengthen the distance between
the rod pivots. Reinstall the ball joint on the lift pivot
arm and secure with the 1/2” hardware previously
removed. Tighten the jam nut against the lift rod.
9. Refer to Figure 19. To adjust the inner lift rod,
loosen the jam nut on the front ball joint then
remove the 1/2” hardware fastening the ball joint
the the lift pivot arm. Turn the ball joint clockwise
to shorten the distance between the rod pivots or
counterclockwise to lengthen the distance between
the rod pivots. Reinstall the ball joint on the lift pivot
arm and secure with the 1/2” hardware previously
removed. Tighten the jam nut against the lift rod.
10. Remove blocks from under the mower deck.
11. Lift mower deck and reinstall adjustment pin in
desired mowing height.
Measure 1st
Measure 2nd
Measure 1st
Measure 2nd
Inner Rod
Outer Rod
Inner Rod
Outer Rod
Adjust Here
Adjust Here
Figure 17. Measure the Inner & Outer Lift Rods
Figure 19. Adjust the Inner & Outer Lift Rods
Figure 18. Deck Lift Pedal
A. Height Adjustment Pin
A
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10
IS5100Z Series - 33 HP Diesel
61” iCD Mower Deck
Level the Mower Deck
NOTE: Before adjusting the deck level, the deck lift rod
timing must be checked and/or adjusted.
1. Park machine on a flat, level surface. Disengage the
PTO, stop the engine and engage the parking brake.
Rear tires must be inflated to 18 psi (1,24 bar); front
tires to 25 psi (1,72 bar).
2. Lock the deck lift pedal in the 6” (15,2cm) position.
Place the deck height adjustment pin in the
4” (10,2cm) position and lower the deck lift pedal
until the arm contacts the pin.
3. Place 2 x 4 blocks under each corner of the mower
deck with the 3-1/2” sides being vertical. See Figure
20.
4. For front deck level adjustment: Adjust the front
eyebolts until the chains are tight and the deck is still
resting on the 2 x 4’s. Tighten jam nuts. See Figure
21.
5. For rear deck level adjustment: For adjustment over
1/2” (1,27cm) move the lower hanger chain mounting
bolt (D, Figure 21) to appropriate hole in mount (C)
to take up most of the slack. For adjustments less
then 1/2” (1,27cm) loosen the jam nuts (A) and turn
the adjustment bolts (B) until the chains are tight and
the rear of the deck is resting on the 2 x 4’s. Tighten
the jam nuts.
6. Remove all 2 x 4 blocks from under the mower deck.
10. For your safety, DO NOT handle mower blades
with bare hands. Position the outside mower
blades so that they face front-to-back (Figure 22).
11. Measure from the front tip of the blade from the
cutting edge to the ground. Measure from the
rear tip of the blade from the cutting edge to the
ground. Repeat this process for the other side of the
machine.
• The measurements should be 4” (10,2 cm).
If the measurements are greater than 1/8” (3,17 mm)
of what they should be adjust the deck height until
they are correct.
Figure 21. Deck Level Adjustment
A. Jam Nut
B. Adjustment Bolt
C. Lower Hanger Chain Mount
D. Lower Hanger Chain Mounting Bolt
Figure 20. 2 x 4 Locations
Adjust Here
A
BC
D
Figure 22. Checking The Blade Height Measurement
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Reproduction

IS5100Z Series - 33 HP Diesel
61” iCD Mower Deck
11
Deck Lift Spring
The deck lift springs (A, Figure 23) are factory set to
provide optimal lifting performance.
Although it is fastened with an adjustable anchor, this is
NOT AN ADJUSTMENT POINT.
DO NOT attempt to adjust the spring length or lifting
performance will be compromised.
Figure 23. Deck Lift Spring Location
A. Deck Lift Spring
A
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12
IS5100Z Series - 33 HP Diesel
61” iCD Mower Deck
Install Deck Drive Belt
1. See Figure 24. Remove the height adjustment pin
and lower deck.
2. Loosen the 5/16” bolts securing the mower deck
guards and remove the guards.
3. Belt is partially installed on the deck pulleys. Make
sure the V-side of the belt runs in the pulley grooves
(Figure 25).
4. Install the drive belt on the gearbox pulley, the
spindle pulleys and idler pulleys.
5. Using a 3/4” combination wrench, rotate the spring-
loaded idler pulley (A, Figure 26) COUNTER-
CLOCKWISE and slide the drive belt over the edge
of the stationary idler pulley (C). Make sure the
V-side of the belt runs in the pulley grooves (Figure
25). Carefully release the tension on the wrench.
6. Reinstall the mower deck guards and tighten the
5/16” hardware to secure in place. Raise deck and
reinstall height adjustment pin (Figure 24) at desired
mowing height.
Figure 24. Lowering Deck
A. Height Adjustment Pin
A
To avoid damaging belts, DO NOT
PRY BELTS OVER PULLEYS.
Figure 26. Mower PTO Belt
A. Spring-loaded Idler Pulley
B. Idler Spring
C. Stationary Idler Pulley
WARNING
Use extreme caution when rotating the idler
pulley with the wrench, due to the increased
tension in the spring as the idler pulley is being
rotated. Injury may result if the wrench is
prematurely released while the spring is under
tension.
Figure 25. Mower PTO Belt Routing
A. Spindle Pulley
B. PTO Drive Belt
C. Spring-loaded Idler Pulley
D. Stationary Idler Pulley
B
C
D
A
A
A
D
D
A
B
C
61” Side Discharge Model Only
Not for
Reproduction

IS5100Z Series - 33 HP Diesel
61” iCD Mower Deck
13
Adding Fuel
To add fuel:
1. Turn fuel shut off valves, located on the bottom of the
fuel tanks, to the “ON” position.
2. Remove the fuel cap (A, Figure 27).
3. Fill the tank to the bottom of the fill tube. This
will leave room in the tank for fuel expansion.
Refer to your engine manual for specific fuel
recommendations.
4. Install and hand tighten the fuel cap.
5. Repeat same process for opposite tank.
NOTE: The fuel tanks are tied together through a “tee”
in the supply lines. By filling only one tank, the level will
balance between the two tanks, effectively having 1/2
tank of fuel for each side.
Figure 27. Fill Fuel Tank
A. Fuel Cap
A
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14
IS5100Z Series - 33 HP Diesel
61” iCD Mower Deck
Lubrication
Lubricate the unit at the locations shown in Figure 28
through 32.
Grease:
Use grease fittings when present. Disassemble parts
to apply grease to moving parts when grease fittings
are not installed.
Not all greases are compatible. Ferris Red Grease
(P/N 5022285) is recommended, automotive-type high-
temperature, lithium grease may be used when this is
not available.
Figure 28. Deck Lift Linkage Pivots
Figure 29. Deck Lubrication
Figure 32. Front Caster & Wheel
A. 1/4-28 Bolt
Figure 30. Control Handle Pivots & Seat Pivots
Figure 31. Gearbox Drive Idler Pivot
Oil:
Generally, all moving metal parts should be oiled
where contact is made with other parts. Keep oil
and grease off belts and pulleys. Remember to wipe
fittings and surfaces clean both before and after
lubrication.
Lubricating the Front Caster
Interval: Annually
1. Remove the 1/4-28 bolt (A, Figure 32) screwed into
the front caster and install a 1/4-28 grease fitting.
2. Grease the front caster.
3. Remove the 1/4-28 grease fitting and reinstall the
1/4-28 bolt.
4. Repeat the process for the other side of the machine.
A
Not for
Reproduction

IS5100Z Series - 33 HP Diesel
61” iCD Mower Deck
15
Priming The Fuel
System
Priming the fuel system fills the fuel filters and removes
any air bubbles from the fuel system. This must be
performed before the first use, after any fuel filter
maintenance or if the fuel system is run dry.
On the water separator:
1. Using a 1/2” wrench, loosen the vent screw (A,
Figure 33) on the water separator 2-3 revolutions.
2. Unscrew the priming hand pump (B) located on top of
the water separator. Operate the hand pump up and
down until fuel that is free of air flows from the vent.
3. Tighten the vent screw to 4.5 ft/lbs (6 N.m.). DO
NOT OVER TIGHTEN!
On the engine fuel filter:
1. Using the appropriate size wrench, loosen the vent
screw (C) on the engine fuel filter 2-3 revolutions.
2. Operate the hand pump up and down until fuel that is
free of air flows from the vent.
3. Tighten the vent screw to 4.5 ft/lbs (6 N.m.).
DO NOT OVER TIGHTEN!
On the engine injector pump:
1. Using a 13mm wrench, loosen the vent screw (D) on
the fuel inlet 2-3 revolutions.
2. Operate the hand pump up and down until fuel that is
free of air flows from the vent.
3. Tighten the vent screw to 4.5 ft/lbs (6 N.m.).
DO NOT OVER TIGHTEN!
4. Tighten the priming fuel pump finger tight.
5. Start the engine. (See STARTING THE ENGINE). If
the engine will not start, further priming is necessary.
If the engine starts but misfires or continues to emit
smoke, further priming is necessary.
6. If the engine starts but runs rough, continue to run
the engine at low idle until the engine runs smoothly.
Figure 33. Fuel System Priming
A. Water Separator Vent Screw
B. Priming Hand Pump
C. Engine Fuel Filter Vent Screw
D. Injector Pump Vent Screw
D
A
B
C
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16
IS5100Z Series - 33 HP Diesel
61” iCD Mower Deck
Perform
Safety Checks
Functional Tests
1. Check the tractor for loose bolts, screws, nuts, etc.
2. Start the engine and check all controls for proper
operation: ground speed control levers, parking
brake, throttle cable, electric PTO clutch, etc.
3. Stop the engine and check for fluid leaks: motor oil,
fuel, hydraulic oil, and antifreeze.
4. If any control fails to operate properly during testing
or seems to be out of adjustment, check and readjust
it according to the following Adjustments section.
WARNING
Disengage the PTO, stop the engine, set the parking
brake, and wait for moving parts to stop before
leaving operator’s position for any reason.
If the tractor does not pass the test, do not
operate tractor. Under no circumstance should
you attempt to defeat the purpose of the safety
system.
Starting The Engine
1. While sitting in the operators seat, engage the
parking brake and make sure the PTO switch is
disengaged and the ground speed control levers are
locked in the neutral position.
2. Set the throttle to middle position (set throttle to FULL
when starting in cold weather)
3. Turn the key to the HEAT position. Hold the key to
turn the glow plug indicator light on and activate the
glow plugs.
4. Wait until the glow plug indicator light turns off, then
turn the key to START. If the engine does not start
immediately, move the throttle control to FULL.
NOTE: Do not crank the engine continuously for more
than 30 seconds. Allow the starter motor to cool for two
minutes before cranking the engine again.
5. After the engine starts, move the engine throttle
control to SLOW. Warm up the engine by running it
for at least a minute.
6. Move the throttle to FULL before engaging the PTO
switch or driving the machine.
SAFETY INTERLOCK
SYSTEM
This unit is equipped with safety interlock switches.
These safety systems are present for your safety,
do not attempt to bypass safety switches, and never
tamper with safety devices. Check their operation
regularly.
Operational SAFETY Checks
Test 1 — Engine should NOT crank if:
• PTO switch is engaged, OR
• Parking brake is not engaged, OR
• Motion control handles are not in the NEUTRAL
position, OR
• Operator is not on the seat.
Test 2 — Engine SHOULD crank if:
• PTO switch is NOT engaged, AND
• Parking brake is engaged, AND
• Motion control handles are locked in the NEUTRAL
position, AND
• Operator is on the seat.
Test 3 — Engine should SHUT OFF if:
• Operator rises off seat with PTO engaged, OR
• Operator rises off seat with parking brake
disengaged.
• Operator moves motion control handles inward
before disengaging parking brake.
Test 4 — Blade Brake Check
Mower blades and mower drive belt should come to a
complete stop within seven (7) seconds after electric
PTO switch is turned off (or operator rises off seat).
If mower drive belt does not stop within seven (7)
seconds, see your dealer.
NOTE: Once the engine has stopped, PTO switch must
be turned off, parking brake must be engaged, and the
motion control handles must be locked in the NEUTRAL
position after the operator returns to the seat in order to
start the engine.
WARNING
If the unit does not pass a safety test, do not
operate it. Under no circumstance should you
attempt to defeat the purpose of the safety
interlock system.
Not for
Reproduction

IS5100Z Series - 33 HP Diesel
61” iCD Mower Deck
17
Seat Adjustment
See Figure 34. The seat can be adjusted fore and aft.
Move the lever forward, position the seat as desired,
and release the lever to lock the seat into position.
Ground Speed Lever
Adjustment
The control levers can be adjusted in three ways. The
alignment of the control levers, the placement of the
levers (how close the ends are to one another) and the
height of the levers can be adjusted.
HANDLE ALIGNMENT
Loosen the mount hardware (A, Figure 35) and pivot
the lever(s) (C, Figure 40) fore or aft to align with each
other.
HANDLE PLACEMENT
Loosen the jam nuts and adjust the placement bolt (B,
Figure 35) in or out to properly adjust the lever end
spacing.
HANDLE HEIGHT
Remove the mounting hardware (A) and reposition the
handle either up or down from its original position. You
will need to readjust the handle alignment as described
above.
Speed Balancing
Adjustment
If the rider veers to the right or left when the ground
speed control levers are in the maximum forward
position, the top speed of each of these levers can be
balanced by turning the adjustment bolt(s) (A, Figure
36). Only adjust the speed of the wheel that is traveling
faster.
To Reduce the Speed of the Faster Wheel
1. Loosen the jam nut (B).
2. turn the top speed adjustment bolt CLOCKWISE to
reduce the speed.
3. Retighten the jam nut when adjustment is complete.
Adjustment
Procedures
Figure 36. Top Speed Adjustment
A. Top Speed Adjustment Bolt
B. Jam Nut
Figure 35. Control Lever Adjustment
A. Alignment Hardware
B. Placement Hardware
C. Ground Speed Control Lever
A
WARNING
DO NOT adjust the tractor for a faster overall
speed forward or reverse than it was designed for.
B
C
A
Seat
Adjustment
Lever
Figure 34. Seat Adjustment
B
Not for
Reproduction

18
IS5100Z Series - 33 HP Diesel
61” iCD Mower Deck
Neutral Adjustment
If the tractor “creeps” while the ground speed control
levers are locked in NEUTRAL, then it may be
necessary to adjust the control linkage.
NOTE: Perform this adjustment on a hard, level surface
such as a concrete floor.
1. Disengage the PTO, engage the parking brake and
turn off the engine.
2. Loosen the jam nuts (B, Figure 37) and turn the
adjustment linkage (A) to adjust. If the machine
creeps forward, turn the linkage CLOCKWISE (while
standing at the rear of the machine, facing forward),
if the machine creeps backward, turn the linkage
COUNTER-CLOCKWISE.
3. Lock the jam nuts (B) when neutral is achieved.
NOTE: This adjustment should not be performed while
the machine is running. It may take several attempts to
achieve neutral, depending upon how much the machine
creeps.
Neutral Position
and Return Spring
Adjustment
To determine if it is necessary to adjust the neutral
position, perform the following steps.
1. Disengage the PTO, engage the parking brake and
turn off the engine.
2. Move the ground speed control levers in the
operating position, pull levers rearward and release.
3. Move the ground speed control levers towards the
neutral position. If the levers do not align with the
notches in the neutral lock plate, it is necessary to
adjust the reverse return bolts (A, Figure 38).
Neutral Position Adjustment
1. Loosen the jam nut (D, Figure 38) locked against the
clevis.
2. Turn the reverse return bolt (A) clockwise to adjust
handle rearward, counter-clockwise to adjust handle
forward.
4. Pull lever rearward and release to check position
again. Adjust as necessary to align levers with
notches.
5. Once the lever alignment has been adjusted, lock
jam nut against the clevis.
Return Spring Adjustment
After adjusting the neutral position, lock the levers in the
neutral position and measure the reverse return spring
(B, Figure 38) length. This should be 2-3/8” (6,03cm)
long. If not, hold the reverse return bolt (A) with a
wrench while turning the spring position nut (C) until the
measurement is achieved.
Figure 38. Neutral Spring Return Adjustment
A. Reverse Return Bolt
B. Reverse Return Spring
C. Spring Position Nut
D. Jam Nut
A
B
C
D
B
A
B
Figure 37. Neutral Adjustment
(Left-hand side shown)
A. Control Linkage
B. Jam Nuts
Not for
Reproduction

IS5100Z Series - 33 HP Diesel
61” iCD Mower Deck
19
Parking Brake
Adjustment
1. Disengage the PTO, stop the engine, block the front
wheels, remove the ignition key, and engage the
parking brake.
2. Locate the upper brake spring (A, Figure 39) through
the opening under the fuel tanks.
3. With the parking brake engaged, measure the
compressed spring length. The spring should be
2” to 2-1/8” (5,0-5,4cm) when compressed.
4. If adjustment is required, disengage the parking
brake and turn the adjustment nut (B).
5. Engage the parking brake and re-measure the
spring.
FRONT
Figure 39. Parking Brake Adjustment
A. Upper Brake Spring
B. Adjustment Nut
A
CAUTION
Do not adjust the spring to be shorter than
2” (5,0cm) when compressed. This may damage
the brake caliper.
2" - 2-1/8"
(5,0 - 5,4cm)
B
Not for
Reproduction

20
IS5100Z Series - 33 HP Diesel
61” iCD Mower Deck
WARNING
Use two hands when adjusting the shock springs.
This will prevent the wrench from slipping while
pressure is being applied.
Suspension Adjustment
The shock assembly can be adjusted to vary the amount
of pre-load applied to the springs. This allows the
operator to maintain the ride height.
Use less pre-load for light weight operators. Use more
pre-load for heavy weight operators.
To adjust the spring pre-load:
1. Park machine on a flat, level surface. Disengage the
PTO, stop the engine and engage the parking brake.
2. See Figure 40. Using the supplied spanner wrench
(p/n 5022853), insert the tip of the wrench into
the notch in the pre-load adjuster. While holding
the wrench with both hands, turn CLOCKWISE to
decrease the pre-load, turn COUNTER-CLOCKWISE
to increase the pre-load. Make sure that for each
pair of shocks (A, B or C, Figure 40) that the left-
hand and right-hand are set to the same amount of
pre-load.
NOTE: Spanner wrench is located under the seat. Rear
tires must be removed to adjust the rear suspension.
Figure 40. Adjust Spring Pre-Load
FRONT REAR
A B C
Briggs & Stratton Power Products Group, LLC.
Copyright © 2010 Briggs & Stratton Corporation
Milwaukee, WI, USA. All Rights Reserved.
The Ferris logo is a trademark of Briggs & Stratton
Corporation, Milwaukee, WI, USA.
Briggs & Stratton Power Products Group, LLC.
5375 North Main Street
Munnsville, NY 13409
[phone]
www.ferrisindustries.com
Not for
Reproduction