Cub Cadet Z-Force S Manuale utente

Service Manual

IMPORTANT: READ SAFETY RULES AND INSTRUCTIONS CAREFULLY

PRINTED IN USA FORM NO.769-00967

This Service Manual is not a substitute for the Operator’s Manual. You must read, understand

and follow all of the directions in this manual as well as the Operator’s Manual before working

on this power equipment.

(11/2003)

CUB CADET LLC, P.O. BOX 361131, CLEVELAND, OH 44136-0019

Cub Cadet Z-Force

www.mymowerparts.com

K&T Saw Shop 606-678-9623 or 606-561-4983

www.mymowerparts.com

K&T Saw Shop 606-678-9623 or 606-561-4983

TABLE OF CONTENTS

Deck Leveling....................................................................................................1

Deck Removal...................................................................................................2

Deck Belt Removal............................................................................................3

Spindle Removal...............................................................................................3

Spindle Inspection.............................................................................................4

Tracking and Neutral Adjustment......................................................................5

Lap Bar..............................................................................................................9

Brakes...............................................................................................................10

Reverse Cutout Switch Adjustment...................................................................12

Electrical System...............................................................................................14

Deck Lift Shaft...................................................................................................19

Steering Input Shaft...........................................................................................23

Pivot Bar............................................................................................................25

Engine...............................................................................................................27

Z-Force Model Lineup.......................................................................................30

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1. DECK LEVELING

1.1. Park the mower on a flat paved surface, engage

the parking brake, shut off engine, remove the

key from ignition switch, disconnect the spark

plug wires.

1.2. Check front tire pressure. Adjust as necessary to

20-25 psi.

1.3. Check rear Drive tire pressure. Adjust as neces-

sary to 8-10 psi.

NOTE: Tire pressure can effect blade height as

much as a 1/4 “

1.4. Measure the distance from the right rear corner

of the transmission mounting bracket to the

ground. Repeat on the left side. See Figure 1.4.

1.5. Adjust tire pressure within specified range, to

equalize the left and right measurements. This

will level the frame right to left.

Figure 1.4

1.6. To make side to side level adjustment align

blades across the width of the deck, perpendicu-

lar to with center line of the mower.

See Figure 1.6.

1.7. Measure height of the outer tip of the right blade.

1.8. Measure height of the outer tip of the left blade.

1.9. Adjust the threaded link at the left side of the

deck, using two 3/4” wrench, so the height of the

blade tips match. The right side link is not

adjustable. See Figure 1.9.

Figure 1.6

Measure blade height

Figure 1.9

Deck height

adjustment nuts

Z Force

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1.10. To do fore and aft pitch adjustment,align the

blades front to back. See Figure 1.10.

1.11. Measure blade height distance of the rear tip of

either outer blade.

1.12. Measure the blade height of the front tip of the

center blade.

NOTE: The blade height of the rear tips should

be 1/8” to 1/4” higher than the front tip.

1.13. Adjust blade pitch using a 7/8” wrench to

lengthen or shorten the front lift rods.

See Figure 1.13.

1.14. Using a 7/8” socket loosen or tighten the outer

jam nuts to obtain proper measurement.

1.15. Check for “slack” in front lift rods. If one rod is

looser than the other, deck vibration will be

amplified.

1.16. Tighten inner jam nut to lock the adjustment.

1.17. Double-check side-to-side and pitch measure-

ments before returning the unit to service.

2. DECK REMOVAL

2.1. Position the mower on a shop lift, turn off the

engine, and remove the key from the key switch.

2.2. Raise deck to the highest position.

2.3. Raise the lift.

2.4. Move deck cart under lift.

2.5. Lower lift so that deck is BARELY touching cart

2.6. Using deck lift handle, lower deck on to cart.

2.7. Unhook the belt tensioning lever on the left side

of the deck, and swing the lever outward to

relieve tension on the deck belt and the PTO

belt.

2.8. Remove PTO belt.

2.9. Remove either linch pin from the lift rod cross

bar, and withdraw the bar. See Figure 2.9.

NOTE: As the cross bar clears each lift rod, it

can be easily unhooked from the deck and

removed.

Figure 1.10

Measure

blade height

Figure 1.13

Jam nuts

Front lift rods

Figure 2.9

Lynch pin

Front lift rod

Lift rod

cross bar

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2.10. Remove both front lift rods.

2.11. Pull the J-pins outward to release rear deck lift

hangers. Rotate the J-pins to lock them in the

out position

2.12. Raise lift. Confirm that none of the belts or link-

ages will interfere with removal of the cutting

deck.

2.13. Pull cart from under lift.

3. DECK BELT REMOVAL

CAUTION: Before doing any work to the deck, it

needs to be safely secured so that it will not fall.

See Figure 3.0.

3.1. Insert a 3/8” breaker bar into the hole on idler

arm assembly. Rotate the idler arm to the left

while rolling belt off of the flat idler pulley.

See Figure 3.1.

Figure 3.0

Strap

Deck service

cart (Heftee)

Figure 3.1

Stationary

Idler

arm

Flat idler

(tensioning)

idler

3.2. Pull the belt below the flat idler and remove the

belt from the spindle assemblies and stack pul-

ley.

4. SPINDLE REMOVAL

4.1. Strap deck to cart.

4.2. Tilt top of cart until securely locks in place.

4.3. Using two 1 1/8” wrenches remove blade nut

from spindle shaft. See Figure 4.3.

4.4. Remove blade and spacer. See Figure 4.4.

Figure 4.3

Figure 4.4

Spacer

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4.5. Remove the spindle shaft and pulley from the

spindle housing. See Figure 4.5.

NOTE: If the spindle is to be removed from the

deck, rather than serviced in-situ, the pulley and

shaft must be removed before the spindle hous-

ing can be removed from the deck.

4.6. Using a 1/2” socket and extension remove the

four bolts holding the spindle housing to the

deck. See Figure 4.6.

5. SPINDLE

NOTE: Spindles can be rebuilt while attached to

deck, or they can be removed for service.

5.1. If the spindle is removed from the deck, carefully

fixture it in a bench vice.

5.2. Remove covers. See Figure 5.2.

5.3. Using soft drift, remove the bottom bearing from

the spindle housing. See Figure 5.3.

NOTE: The seal will come out with the bearing

5.4. Remove the spacer that fits between the bear-

ings.

5.5. Repeat bearing and seal removal on the second

bearing in the spindle housing.

Figure 4.5

Spindle pulley

Hex head on

spindle shaft

Figure 4.6

bolts

Spindle

Figure 5.2

Bearing cover (bottom)

Figure 5.3

Tapered roller bearing Seal

Note: lip

faces out

Spindle housing

seen from top

Insert drift

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5.6. Clean and inspect all of the components.

Replace any that exhibit wear or damage. Eval-

uate the feasibility of repair versus complete

spindle replacement.

5.7. If a roller bearing is damaged, drive the bearing

race out of the housing and replace it as well.

Do not over-look the bearing race at the inspec-

tion stage. See Figure 5.7.

5.8. Drive new bearing races into the spindle housing

if required, using a heavy hammer or press, and

and appropriate driver.

5.9. Pack the bearings with grease and assemble the

spindle.

5.10. Install the seals with the lips facing outward,

using an appropriate driver.

Figure 5.7

Cover

Seal

Bearing Spacer

Seal

Cover

5.11. The double pulley that transfers drive from the

PTO belt to the deck belt has two different size

sheaves. The PTO belt rides in the top sheave,

which is the wider of the two, to accommodate

the angularity that results from different cutting

heights. See Figure 5.11.

NOTE: Failure to install the double pulley in the

right orientation will result in belt loss and pre-

mature belt failure.

6. TRACKING AND NEUTRAL ADJUSTMENT

6.1. For preliminary checks, park the mower on a

flat paved surface, engage the parking brake,

shut off engine, remove the key from ignition

switch.

6.2. Check front tire pressure. Adjust as necessary to

20-25 psi.

6.3. Measure distance from the right rear corner of

the transmission mounting bracket to the

ground. Measure the distance from the left rear

corner of the transmission mounting bracket to

the ground. If the measurements are not equal,

the air pressure in the tires will need to be

adjusted to level the frame.

6.4. Check rear Drive tire pressure. Adjust as neces-

sary within the range of 8-10 PSI.

NOTE: This adjustment may be redundant if the

deck has recently been leveled.

NOTE: Tire pressure will effect tire circumfer-

ence, which will effect tracking.

Figure 5.11

deck belt

PTO Belt

(wide sheave)

(narrow sheave)

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6.5. Check the IHT (Integrated Hydrostatic transmis-

sion) release the levers to be sure the transmis-

sions are fully engaged. See Figure 6.5.

6.6. Check steering linkage for wear and damage.

i.e.; loose ball joint ends, worn bellcrank bush-

ings, and loose or bent hardware.

6.7. Replace any worn or damaged components

before attempting to make a tracking adjust-

ment.

6.8. After the preliminary items have been covered,

check the neutral adjustment.

6.9. Raise rear wheels off ground and support the Z-

Force by the frame.

6.10. Start the engine and release parking brake, do

not move the lap bars from the start position.

Neither the rear wheels nor the brake rotors

should move. See Figure 6.10.

6.11. Turn the engine off and remove the key from the

switch.

6.12. If there is wheel movement in neutral, discon-

nect the control linkage from the transmission

that is driving that wheel.

NOTE: If both wheels “creep” then both control

linkages need to be disconnected.

6.13. Using two 1/2” wrenches, remove the Nylock nut

holding steering link rod end to the return-to-

neutral mechanism. See Figure 6.13.

6.14. With the steering link rod disconnected, start the

engine, release the parking brake, and check for

wheel and brake rotor movement.

6.15. If “creep” has been eliminated by disconnecting

the linkage, then only the linkage must be

adjusted to eliminate the “creep”. If “creep” still

exists, then the return-to-neutral mechanism on

the transmission must be adjusted.

Figure 6.5

Release rod for right

hand side IHT, seen at

rear of frame.

Released position; lift

Forward end of the same

rod, connected to lever on

right hand side IHT.

IHT release rod

IHT release

lever

and push in to engage

Figure 6.10

Parking brake

released

Leave the lap bar in the

“START” position

notch. This will hold

the lap bar in neutral.

Figure 6.13

Return-to-neutral mechanism

Steering

link rod end

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