Textron JACOBSEN MC400 Setup guide

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.

OWNER/OPERATOR’S MANUAL

& ILLUSTRATED PARTS LIST

09-323 REV A

MODEL:

73-70805 TREE FARM MOWER 44 MC400

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.

TREE FARM

MOWER

IMPORTANTMESSAGE

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

designed and built anywhere.

This product comes with an Owner/Operator's Manual. The useful life and good service you receive from this

product depends to a large extent on how well you read and understand this manual. Treat this product properly

and adjust it as instructed, and it will give you many years of reliable service.

See a Jacobsen dealer for any service or parts needed. Jacobsen service ensures that you continue to receive

the best results possible from Jacobsen 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 product only as directed in the manual, keep it in good repair and follow safety warnings and

instructions. You'll always be glad you did.

Jacobsen, a Textron Company

One Bob Cat Lane

Johnson Creek, WI 53038-0469

9-2003

TABLE OF CONTENTS FIGURES PAGE

INTRODUCTION / SPECIFICATIONS........................................................................................................... 2

SAFETY ..................................................................................................................................................... 3, 4

ASSEMBLY INSTRUCTIONS ........................................................................................................................ 5

INSTALLATION .............................................................................................................................................. 6

OPERATION .................................................................................................................................................. 7

SERVICE .................................................................................................................................................. 8-10

PARTS SECTION .........................................................................................................................................11

MAIN DECK ....................................................... FIGURE 1 ................................................................. 12, 13

FRAME AND HITCH PARTS.............................. FIGURE 2 ................................................................. 14, 15

FRONT WHEEL SHIELDS................................. FIGURE 3 ................................................................. 16, 17

REAR WHEEL SHIELDS ................................... FIGURE 4 ................................................................. 18, 19

GEARBOX (A).................................................... FIGURE 5 ................................................................. 20, 21

GEARBOX (B).................................................... FIGURE 6 ................................................................. 22, 23

GEARBOX (C) ................................................... FIGURE 7 ................................................................. 24, 25

GEARBOX (D) ................................................... FIGURE 8 ................................................................. 26, 27

TREE FARM

MOWER

INTRODUCTION / SPECIFICATIONS

SPECIFICATIONS

Mower Overall Width ................................................................... 45-1/2"

Cutting Width ............................................................................... 44"

Overall Length ............................................................................. 79" including wheel shields

Rear Fender Width with 20 X 8.00-10 turf tires........................... 43-1/4"

Rear Fender Width with standard tires........................................ 46-1/4"

Cutting Height .............................................................................. 2" to 5"

Mower Drive................................................................................. PTO Belt

Spindle Drive ............................................................................... Gearbox and 2 V-belts

Spindle Bearings ......................................................................... 1" Ball Bearings

Blades .......................................................................................... 2 Blades, 22-1/2"

Discharge..................................................................................... Rear

Caster Wheel............................................................................... 10 X 3.5, Semi-pneumatic

Weight.......................................................................................... 272 lbs. approx.

DESCRIPTION

The Model MC400 Tree Farm Mower is designed to fit the 420 tractor equipped with standard tires or

optional 20 X 8.00-10 turf type tires. The mower is easy to attach and detach in a minute or less allowing

interchange with many other front mounted attachments. Cutting height is controlled by the front caster

wheel. Exceptional visibility and maneuvering is possible with this front mounted design mower. Shielded

tractor wheels keep the unit from damaging the lower branches of young trees or shrubs. Two mowing

blades discharge grass to the rear and enable the mower to cut tall grass. This is an ideal unit for mowing

between closely spaced rows of trees or shrubbery.

TREE FARM

MOWER SAFETY

NOTICE !!!

Unauthorized modifications may present extreme

safety hazards to operators and bystanders and

could also result in product damage.

Jacobsen, a Textron Company strongly warns

against, rejects and disclaims any modifications,

add-on accessories or product alterations that are

not designed, developed, tested and approved by

Jacobsen Engineering Department. Any Jacobsen

product that is altered, modified or changed in any

manner not specifically authorized after original

manufacture–includingtheadditionof“after-market”

accessories or component parts not specifically

approved by Jacobsen–will result in the Jacobsen

Warranty being voided.

Anyandallliabilityforpersonalinjuryand/orproperty

damagecausedbyanyunauthorizedmodifications,

add-on accessories or products not approved by

Jacobsen will be considered the responsibility of

the individual(s) or company designing and/or

making such changes. Jacobsen will vigorously

pursuefullindemnification andcosts fromanyparty

responsibleforsuchunauthorizedpost-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

Jacobsenmachines. Foryoursafetyand thesafety

ofothers,readandfollowtheinformationgivenwith

thesesignalwordsand/orthesymbolshownabove.

DANGER indicates an imminently hazardous

situationwhich,if notavoided,WILL result indeath

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.

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.

TREE FARM

MOWER

1. Read and understand the Owner’s Manual before attempting to operate this machine.

2. Operate all controls from the operator’s seat. NO RIDERS.

3. Keep all shields in place and safety switches adjusted properly.

4. Do not leave equipment unattended. STOP the engine and remove the key.

5. Do not allow minors or the inexperienced to operate this machine.

6. Keep people and pets a safe distance away from machine using power driven attachments. Injury

could result from flying debris.

GENERALSAFETY

OPERATINGSAFETY

1. STOP ENGINE to make repairs or adjustments.

Do not attempt to work on unit or attachments

with the engine running.

2. Before leaving the operator's seat:

• Disengage mower drive.

• Set Parking brake.

• Stop Engine.

SAFETY

KEEP HANDS AND FEET AWAY FROM

ROTATING BLADES.

BE ALERT FOR DEBRIS IN THE PATH OF THE

MOWER. STICKS, STONES AND OTHER

OBJECTS CAN CAUSE SERIOUS DAMAGE TO

THE ATTACHMENT.

TREE FARM

MOWER ASSEMBLY INSTRUCTIONS

1. Remove mower from crate.

2. Remove top shield and remove bag of small fastener parts. Separate according to size.

3. If optional 20 X 8.00-10 turf-type tires are being used, move each wheel hub in toward the center of the

tractor a distance of 3/4 inch or a total distance of 1-1/2 inches from the end of the axle. Mount optional

tires in the usual manner.

4. Remove the drive pulley shield and install drive belt Part No. 81-A040. Replace shield. Attach the

mower to the tractor quick-hitch front lift in the usual manner.

5. Fill gearbox to 1/8" pipe plug on front of gearbox with 80/90 gear oil.

6. To install front skirts - Mount directly on deck mounts using a 3/8 x 3/4 flange bolt and nut at the front.

When using standard tires, fasten skirts to rear of mower at desired height with 2" spacers and 5/16 X

2-3/4 bolts and nuts on each side. If optional 20 x 8.00-10 tires are used, fasten skirts to rear of mower

at desired height using two 5/16 X 3/4 bolts and nuts on each side. (See Parts Figure 3)

7. To install rear wheel skirts - Remove front and rear fenders saving the bolts and nuts. Replace the

fenders with the skirts using the same bolts and nuts. Two sets of mounting holes are provided. One

set is for narrow setting with the 20 x 8.00-10 turf-type tires. The other set of holes is for use with

standard bar type tires. (See Photo 5 and Parts Figure 4) Install support brackets from parts package

to tread plate using the same bolts which fastened the fenders to tread plate. Attach brackets to skirts

with 1/4 x 3/4 flange bolts and nuts.

8. Do not use both bar tires and turf tires at the same time. This is important because the tires are not the

same size and the rolling radius is different. Different size tires could cause premature failure of the

transaxles.

TREE FARM

MOWER

INSTALLATION

ATTACHING MOWER TO TRACTOR:

1. Operate latch control to open hitch latches.

2. Drive tractor into position aligning the quick hitch.

3. Be sure both latches engage fully and are laced in the locked position.

NOTE: Stop engine! Do not attempt to install drive belt with engine running.

4. Release idler assembly to facilitate easy installation of the drive belt.

5. Put belt over drive pulleys and engage idler assembly.

6. Set mower to desired cutting height by moving the 3 clevis pins at the 3 attaching points of the support

frame. See photos below for front and rear height adjustment.

7. Start engine and engage PTO slowly to prevent shock load on mower components.

8. Mow with front lift lever in “FLOAT” position only.

FRONT HEIGHT ADJUSTMENTREAR HEIGHT ADJUSTMENT

TREE FARM

MOWER OPERATION

OPERATING INSTRUCTIONS

- Set mower cutting height. See Installation Page 6.

- Mow with front lift lever in “FLOAT” position only.

- Engage PTO slowly at low engine r.p.m.

- Mower is designed to operate at full throttle for heavy mowing, but 3/4 throttle is adequate for average

conditions.

- Set mower blade speed with the throttle and control ground speed with the Forward - Reverse control

lever.

- Trimming can be done along either side of the mower deck. Wheel shields keep the unit from

damaging the lower branches of young trees.

- Use extreme caution when operating on hills.

- A roll bar is recommended.

- Mow up and down hills whenever possible.

- A rear weight bar with 2 weights is recommended.

Observe all Safety Decals.

Keep all Shields in place.

Do not operate mower with other persons in the area. Irregularities in

ground surface can permit foreign material to be propelled from

beneath deck to cause serious injury or death.

Before leaving tractor, move Forward - Reverse control to neutral

position, disengage PTO, set parking brake, lower mower deck and

stop engine.

Remove key from ignition if maintenance procedures are to be

performed or tractor is to be left unattended.

The mower deck is enclosed on all sides to prevent foreign material

from being propelled from beneath deck toward operator or

bystanders. Keep all shields in place!

TREE FARM

MOWER

SERVICE

MAINTENANCE

Daily maintenance:

Visual inspection for loose parts and accumulation of grass and dirt.

Clean accumulation of grass clippings from beneath deck daily for better mowing performance.

Keep blades sharp. Check the tips of the blades for wear.

25 hour maintenance:

In addition to daily maintenance, grease caster, slip yoke and all bearings.

Remove top shield and grease spindle bearings. Grease the spindle bearings beneath the deck also.

Do not overgrease.

Check gearbox oil level, fill to 1/8" pipe plug on front of gearbox with 80/90 gear oil.

Annual Maintenance:

In addition to daily and 25 hour maintenance, check the drive belts for cracks or wear. Rotate each

spindle to check for roughness which would indicate bearing wear. Remove and sharpen blades, clean

and wash deck prior to storage. The acid in grass clippings causes premature corrosion and rusting of

mower parts.

ADJUSTMENTS

Sharpening blades:

Be careful while sharpening blades that the corners of the blade do not become rounded at the tips. This

reduces the blades overlap and will cause skipping. While sharpening, it is essential to ensure the balance

of the blades is maintained to prevent vibration. Blade bolt torque should be 75-85 foot pounds. Rotate

blades after re-installing to check for bent or bowed blades and blade alignment.

Blade alignment:

When installing sharpened blades or new blades be sure the mating surfaces are clean and the retaining

washer is not bent. Check for bent blades by rotating blades until tips are near each other.

Leveling mower deck:

The front to rear and side to side leveling adjustment is provided by 3 clevis pins.

Example for low cutting: If rear pins are in the top hole, the front pin will be in the bottom hole.

If the rear pins are moved down one hole, the front pins will be moved up one hole.

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