Textron Jacobsen 744908A Manuale utente

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.

TECHNICAL MANUAL

Safety, Operation, Parts, Maintenance, Service

4124517 REV A

Models:

744908A LAWNAIRE IV 4HP HONDA

744909A LAWNAIRE IV 3.5HP BRIGGS & STRATTON

744910A LAWNAIRE V 4HP HONDA

744911A LAWNAIRE V 3.5HP BRIGGS & STRATTON

CALIFORNIA

Proposition 65 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.

ADVERTENCIA

AVERTISSEMENT

WARNING

The engine exhaust from this product

contains chemicals known to the State

of California to cause cancer, birth

defects or other reproductive harm.

California Advertencia

de la Proposicion 65

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.

L’

mission du moteur de ce mat

riel

contient des produits chimiques que

l’Etat de Californie consid

tre

canc

rig

nes, provoquer des d

fauts

cong

nitaux et d’autres dangers en

mati

re de reproduction.

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.

Lawnaire

IV & V

12-2002-TGTSP

IMPORTANT MESSAGE

Thank you for purchasing this Jacobsen product. You have purchased a world class product, one of the best

designed and built anywhere.

This machine comes with a Technical Manual containing safety, operation, parts, maintenance and service

information. The useful life and good service you receive from this machine depends to a large extent on how

well you read and understand this manual. 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

manual 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 manual, 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

SAFETY ......................................................................................................................................................... 2

SAFETY AND OPERATION DECALS ............................................................................................................ 3

ASSEMBLY/SET-UP INSTRUCTIONS ...................................................................................................... 4, 5

CONTROLS ............................................................................................................................................... 7, 8

OPERATION ............................................................................................................................................ 9, 10

SERVICE ......................................................................................................................................................11

STORAGE .................................................................................................................................................... 12

TRANSPORTING ......................................................................................................................................... 13

SPECIFICATIONS ....................................................................................................................................... 14

PARTS SECTION ........................................................................................................................................ 15

FRAME GROUP ................................................ FIGURE 1 ................................................................. 16, 17

MAIN GROUP-LAWNAIRE IV ............................ FIGURE 2 ................................................................. 18, 19

MAIN GROUP-LAWNAIRE V ............................. FIGURE 3 ................................................................. 20, 21

HANDLE GROUP .............................................. FIGURE 4 ................................................................. 22, 23

TINE WHEEL GROUP ....................................... FIGURE 5 ................................................................. 24, 25

DRUM GROUP .................................................. FIGURE 6 ................................................................. 26, 27

DECAL GROUP-LAWNAIRE IV ......................... FIGURE 7 ................................................................. 28, 29

DECAL GROUP-LAWNAIRE V .......................... FIGURE 8 ................................................................. 30, 31

Lawnaire

IV & V

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.

SAFETY

NOTICE !!!

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

Golf, Turf & Specialty Products 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.

WARNINGindicates 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.

CAUTION used without the safety alert symbol

indicates a potentially hazardous situation which, if

not avoided, MAY result in property damage.

Lawnaire

IV & V

SAFETY AND OPERATION DECALS

Operating Instructions

This decal can be found on top of the handlebar

assembly. It tells the operator the steps involved; prior

to aerating; loading and transporting and how to aerate.

Warning Hands In Moving Components

This decal is located on the main frame and provides

the operator with three message warnings.

(1) The symbol on the left shows the possible result of

working on machinery with safety shields removed.

Hands and fingers may become entangled in belts. DO

NOT operate the unit without safety shields in place.

(2) The center symbol warns the operator and/or

bystanders to keep hands out of moving components.

(3) The right symbol instructs the operator to read the

service section of the operators manual. Disable spark

plug wire before performing any service or maintenance

on the unit.

Engine Oil Level

This decal is located on the main frame, in front of the

engine. It tells the operator to have the engine level

prior to checking the oil level.

Danger Hands And Feet

This decal is located on the main frame and informs the

operator of areas which are capable of serious injury.

The symbol shows fingers being cut or severed. DO

NOT place hands, feet, fingers or toes under aerator

while operating the unit.

Handle Warning-Lawnaire IV Only

This decal is located on the lower end of the handlebars.

It informs the operator that the folding handlebars need

to be securely locked in place prior to aerating.

Throttle Control

This decal is located on the handlebar next to the

engine throttle control. It tells the operator which

direction to move the engine throttle for the desired

engine speed. The throttle control decal uses the turtle

to represent slower engine speeds, and the rabbit to

represent faster engine speeds.

Lawnaire

IV & V

ASSEMBLY/SET-UP INSTRUCTIONS

GENERAL NOTE: FRONT, REAR, RIGHT HAND AND LEFT HAND REFERENCES BELOW

ARE WITH RESPECT TO AN OPERATOR AT THE CONTROLS.

UNPACKING - Unpacking the aerator entails

securing the handle and rolling the unit off the

shipping pallet.

1. Cut the banding securing the aerator to the

pallet

Banding is under tension and may snap back

when cut. Wear eye protection and stay clear

when cutting the band.

2. Unfold handle by pulling on the transport lift

handle A.

FOR LAWNAIRE V MODELS

1. Bolt the handle Bin place, as shown.

2. Pull up on the transport lift handle Cto raise the

aerator to the transport position.

3. Carefully roll the unit off the pallet.

Lawnaire

IV & V

ASSEMBLY/SET-UP INSTRUCTIONS

FOR LAWNAIRE IV MODELS

1. Flip the handle locking knobs Dup into position

over the handle bracket Eand tighten. HAND

TIGHTEN ONLY!.

2. Pull up on the transport lift handle Cto raise the

aerator to the transport position.

3. Carefully roll the unit off the pallet.

NOTE: If the folding handle will not be used, bolt the

handle in place. See instructions in the

preceding section, for Lawnaire V Models.

CHECKING THE CLUTCH CABLE- The clutch

cable is adjusted prior to shipping; however, it

should be checked before the unit is put into

service.

1. Pull the clutch control handle Dback and down

and make sure the idler engages the belt.

2. Release the clutch control handle Dand make

sure the belt disengages completely.

3. If adjustment is necessary, loosen nut Eon the

clutch spring hardware and adjust its position in

the slot of the clutch lever.

NOTE: Spring extension should not exceed .25 inch

Lawnaire

IV & V

ASSEMBLY/SET-UP INSTRUCTIONS

CHECKING THE THROTTLE CABLE- The throttle cable is adjusted prior to shipping; however, it should be

checked before the unit is put into service. The throttle control should freely move in a full range of

motion forward and backward. If necessary, the throttle cable can be adjusted as follows:

FOR BRIGGS AND STRATTON ENGINES:

1. Loosen the throttle friction wing nut Fto allow

free movement of the throttle control G.

2. Loosen the casing clamp screw Hon the control

plate.

3. Push throttle lever all the way forward.

4. Push throttle cable sleeve Jup through cable

clamp until fully advanced.

5. Tighten the casing clamp screw H.

FOR HONDA ENGINES:

1. Loosen the throttle lever friction nut Kenough to

allow free movement of the throttle lever L.

2. Loosen throttle cable clamp M.

3. Push throttle lever all the way forward.

4. Push throttle cable sleeve Nup through cable

clamp until fully advanced.

5. Tighten the casing clamp screw M.

INITIAL BELT SEATING AND ADJUSTMENT

Proper tensioning of V-belts is the single most

important factor necesssary for long, satisfactory

operation. Too little tension will result in

slippage, causing rapid belt and pulley wear.

Too much tension can result in excessive stress

on belts, bearings, shafts, reduced efficiency

and operator fatigue due to excessive force

required to hold the bail closed.

1. Operate the drive a few minutes to seat the belts

in the sheave grooves. Observe the operation of

the drive under its highest load condition (usually

starting).

2. Check the tension on a new drive serveral times

during the first 2 hours of opertion.

3. Keep the drive free of foreign material which

might cause slippage or damage to the belt and

sheave surfaces.

4. If a V-belt slips, it is too loose. NEVER apply belt

dressing, as this will damage the belt and cause

early failure.

5. Make sure pulleys stay in proper alignment.

Misaligned pulleys can result in belt rolling in the

pulley groove causing belt damage or breakage.

Lawnaire

IV & V

CONTROLS

HANDLE CONTROLS

Transport Lift Handle A - Pushing down on the

handle lowers the tines for aerating. Pulling the

handle up raises the tines so the aerator can be

moved or transported without incurring damage

to the unit or the turf.

Clutch Control Handle (Bail) B - Engages the belt

tightener clutch. Pulling back on the handle

engages the clutch; releasing the handle

disengages the clutch.

Releasing the clutch on an incline will cause

freewheeling, which will allow the unit to roll

down the incline.

Throttle Control C - The throttle control, located on

the handle, adjusts the engine speed. Pushing

the control forward increases the speed; pulling

the control back reduces the speed.

Lawnaire

IV & V

CONTROLS

ENGINE CONTROLS

The Lawnaire IV & V are available with either a

3.5 HP Briggs & Stratton engine or a 4 HP

Honda engine.

Briggs & Stratton Engine Controls

The engine is equipped with an On/Off control A,

a choke control Band fuel shut-off valve C. The

On/Off control must be in the "ON" position for

the engine to be started. Turning the On/Off

control to the "OFF" position will stop the engine.

Using the choke control will help start a cold

engine. After the engine starts, adjust the choke

for best running results. Once the engine warms

up, the choke should not be needed.

Honda Engine Controls

The engine is equipped with a choke A, a fuel

valve Band an On/Off switch C. The fuel valve

and the On/Off switch must both be in the "ON"

position to start the engine. Turn the On/Off

switch to "OFF" to stop the engine. Using the

choke will help start a cold engine. After the

engine starts, adjust the choke for best running

results. Once the engine warms, the choke

should not be needed.

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