John Deere

OMMT6743

Issue F9

Professional Utility Mower

2653A Diesel PIN (080001 - )

Introduction

Safety Signs

Controls

Operating

Operating Cutting Units

Replacement Parts

Service Machine Safely

Service Interval Chart

Service Lubrication

Service Engine

Service Transmission

Service Cutting Units

Service Electrical

Cleaning Or Replacing Battery

Checking Battery Electrolyte Level

Charge The Battery Safely

Charging The Battery

Using Booster Battery

Charging Rates

Replacing Fuses

Replacing Indicator Light Bulb

Service Miscellaneous

Troubleshooting

Storing Machine

Assembly

Specifications

Warranty

John Deere Service Literature

John Deere Quality Statement

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Service Electrical


Cleaning Or Replacing Battery

c CAUTION: Avoid injury! Battery gas can explode:

ˇ Keep sparks and flames away from batteries. Use a flashlight to check battery electrolyte level.

ˇ Never check battery charge by placing a metal object across the posts. Use a voltmeter or hydrometer.

ˇ Always remove grounded (-) battery clamp first and replace it last.


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1. Loosen lock nuts (A) to remove hold-down bracket (B).

2. Remove negative (black) cable (C) from battery first.

3. Remove positive (red) cable (D).

4. If battery is very dirty, remove battery.

5. Clean battery, battery terminals, cable ends, hold-down and cover, and battery ledge with a solution of 1 part baking soda to 4 parts water. KEEP solution out of battery cells.

6. Rinse all parts with clean water. Let dry.

7. Install battery.

8. Check cell caps to be sure vent holes are open.

9. Connect positive (red) cable to battery first, then negative (black) cable.

10. Apply petroleum jelly on battery terminals to help prevent corrosion.

11. Install battery hold-down and covers (B) and fasten with lock nuts (A) below battery support bracket. Tighten lock nuts.

Checking Battery Electrolyte Level

c CAUTION: Avoid injury! Sulfuric acid in battery electrolyte is poisonous. It is strong enough to burn skin, eat holes in clothing, and cause blindness if splashed into eyes.

ˇ Wear eye protection and avoid spilling or dripping electrolyte.


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1. Remove battery caps (A).


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IMPORTANT: Avoid damage! DO NOT fill cells to the bottom of the filler neck (B). Electrolyte can overflow when battery is charged and cause damage.



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2. Electrolyte (C) should be 6 mm (1/4 in.) above plates (D).

3. Add distilled water if necessary.

4. Install caps and cover.

Charge The Battery Safely

c CAUTION: Avoid injury! BE VERY CAREFUL: Battery fluid (electrolyte), is a solution of water and sulfuric acid. It is very harmful to eyes, skin, or clothing.

ˇ Wear goggles or an eye shield when you work with a battery.

ˇ If the acid contacts your eyes, skin, or clothing, flush the area immediately with water. Get medical help, if necessary.

A battery gives off gas which can explode. An exploding battery will spray sulfuric acid in all directions.

ˇ Keep cigarettes, sparks, and flames away from the battery.

ˇ Charge the battery in an area with good ventilation.

Follow instructions on the battery charger or in the charger operator's manual, or use the instructions below as a guide.

BEFORE YOU CHARGE A BATTERY:

ˇ Wait until the battery has warmed to room temperature. Do not charge a frozen battery.

ˇ Check the electrolyte level of each cell. (See Checking Battery Electrolyte Level in this section.)

ˇ Install the battery cap(s) on the battery.

Turn OFF and unplug the charger before you connect cables to the battery or disconnect cables from the battery.

If the battery becomes warm to touch during charging:

ˇ Reduce the charging rate OR

ˇ Stop charging the battery until it cools.

Charging The Battery

c CAUTION: Avoid injury! DO NOT charge a frozen battery. Battery gases can explode. Keep cigarettes, sparks, and flames away from battery.

KEEP BATTERY FULLY CHARGED:


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1. Remove and clean battery. (See Checking and Cleaning Battery this section).

2. Check electrolyte level. (See Checking Battery Electrolyte Level in this section.)

c CAUTION: Avoid injury! To avoid injury, before you connect or disconnect charger cables to battery, unplug charger cord.

3. Leave cell caps on battery while you charge it.

4. Connect positive (+) charger cable to positive (+) battery terminal.

5. Connect negative (-) charger cable to negative (-) battery terminal.

6. Plug in charger cord.

7. Charge battery. See CHARGING RATES on the next page.

8. Unplug charger cord. Remove charger cables.

9. Install battery. (See Replacing Battery in this section).

Using Booster Battery

c CAUTION: Avoid injury! Battery gas is explosive:

ˇ DO NOT smoke while you charge battery.

ˇ Keep all flames and sparks away.

ˇ DO NOT charge frozen battery.

ˇ DO NOT connect booster battery negative (-) cable to starting vehicle negative (-) terminal.


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1. Connect positive (+) booster cable to booster battery positive (+) post (D).

2. Connect the other end of positive (+) booster cable to vehicle battery positive (+) post (A).

3. Connect negative (-) booster cable to booster battery negative (-) post (C).

4. Connect the other end of negative (-) booster cable to engine ground (B) away from battery.

Charging Rates

See your battery charger or charger operator's manual for information on charging. Or read the information below to FULLY CHARGE your battery.

For a charger with a CURRENT ADJUSTMENT CONTROL:

ˇ Adjust the control to 10 amps.

ˇ Charge the battery for 6-8 hours.

For a charger with a switch for MAINTENANCE FREE, DEEP CYCLE, or NORMAL (CONVENTIONAL) setting:

ˇ Use the MAINTENANCE FREE or DEEP CYCLE setting.

For a charger with SLOW CHARGE, FAST CHARGE, or BOOST CHARGE setting:

ˇ DO NOT use the BOOST CHARGE setting.

ˇ Use the SLOW CHARGE setting:

ˇ - For a charger rated at less than 10 amps.

ˇ - For 3-16 hours.

ˇ Use the FAST CHARGE setting:

ˇ - For a charger rated at 10 amps.

ˇ - For 5-8 hours.

NOTE: Your charger may have an AUTOMATIC STOP to prevent charging the battery:

ˇ When the battery is fully charged.

OR

ˇ When the battery is not in condition to take a charge.

NOTE: Make sure battery is fully charged at setup, the battery comes fully charge from the factory but some slight discharging may occur. Charge the battery to a minimum of 11.6 volts to prolong battery life

Replacing Fuses

1. Raise the hood and open the fuse holder.


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2. Pull fuse (A) out of socket. A metal clip in the fuse will be broken if defective.

3. Push new 20 amp fuse into socket. Be sure to replace fuse with same amperage. (See your John Deere distributor or an automotive parts store for fuse replacement.)

Replacing Indicator Light Bulb


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1. To remove bulbs use a 1/4 turn counterclockwise of the bulb holder (A).

2. Pull the burnt out bulb straight out: DO NOT twist.

3. Push the new bulb straight in.

4. Install bulb holder with a 1/4 turn clockwise twisting motion.