1987 Bobcat 743 Manual

The 1987 Bobcat 743 is a compact skid-steer loader featuring a 40 hp diesel engine, 1,300 lb rated operating capacity, hydrostatic drive system, vertical lift path, and durable construction for various material handling applications. Below are key sections for safety, features, operation, maintenance, specifications, and troubleshooting.

Features at a Glance

Key components: 40 hp diesel engine, hydrostatic transmission, vertical lift mechanism, ROPS/FOPS certified cab, auxiliary hydraulics, quick-attach system.

Feature	Description
Engine	40 hp diesel, liquid-cooled
Operating Capacity	1,300 lbs at 35% tipping load
Lift Height	10.5 feet maximum
Transmission	Hydrostatic drive, two-speed
Hydraulic System	2,500 psi operating pressure
Turning Radius	Zero inside turning radius
Weight	4,850 lbs operating weight
Fuel Capacity	15 gallons
Drive System	Four-wheel drive, skid-steer
Attachments	Quick-attach compatible system

Installation & Setup

Prepare machine for first use after delivery or storage.

1. Inspect machine: Check for shipping damage, loose components.
2. Fluid levels: Check engine oil, hydraulic fluid, coolant, fuel.
3. Battery: Connect and charge if necessary.
4. Tire pressure: Inflate to recommended 30 psi.
5. Safety systems: Verify ROPS structure, seat belt, safety interlocks.

WARNING! Machine is heavy; use proper lifting equipment. Ensure all safety devices are functional before operation.

First-Time Operation

Startup and basic operation procedures.

1. Pre-start inspection: Walk around machine, check for obstructions.
2. Enter cab: Use steps and handholds, fasten seat belt.
3. Start engine: Turn key to start position, allow glow plugs if cold.
4. Operate controls: Practice lift/tilt functions without load.
5. Drive practice: Use two-hand control pattern in open area.
6. Shutdown: Lower attachment, park on level surface, engage parking brake.

CAUTION! Complete operator training before use. Never operate without seat belt fastened.

Specifications

• Model: Bobcat 743
• Year: 1987
• Engine: 40 hp diesel, 4-cylinder
• Operating Capacity: 1,300 lbs
• Lift Height: 10.5 feet
• Dump Reach: 27 inches at maximum height
• Travel Speed: 0-7 mph
• Overall Width: 60 inches
• Overall Height: 76 inches (with ROPS)
• Hydraulic Flow: 11 gpm standard flow
• Fuel Type: Diesel #2

Controls and Operation

Two-hand control system for drive and attachment functions.

Left Hand Control: Forward/reverse drive, left/right turns

Right Hand Control: Lift arm raise/lower, bucket tilt forward/back

Additional Controls: Auxiliary hydraulic control, parking brake, ignition key, glow plug indicator, hour meter

Operation Modes: Standard operation, attachment operation, transport mode

Attachments

Quick-attach system compatible with various Bobcat attachments.

1. Bucket: Standard 60" materials bucket
2. Pallet forks: 42" with 2,000 lb capacity
3. Auger: 6-12" diameter earth auger
4. Grapple: Root grapple for debris handling
5. Snow blade: 72" angle plow

Tip: Always lower attachment to ground before disconnecting hydraulic lines.

Maintenance Schedule

Regular maintenance ensures optimal performance and longevity.

1. Daily: Check fluid levels, inspect for leaks, clean machine
2. 50 hours: Grease all fittings, check tire pressure
3. 250 hours: Change engine oil and filter
4. 500 hours: Change hydraulic filters, fuel filter
5. 1,000 hours: Change hydraulic fluid, coolant
6. 2,000 hours: Major service - inspect drive chains, bearings

WARNING! Perform maintenance with engine off and key removed. Support lift arms with safety prop.

Safety Features

ROPS/FOPS certified cab, seat bar interlock, seat belt warning, parking brake, lift arm safety prop.

Storage & Transport

Store in dry location, clean thoroughly, lower attachment to ground, engage parking brake. For transport, secure with rated tie-downs, use proper ramps.

CAUTION! Always use trailer with adequate capacity. Secure machine properly during transport.

Regulatory Information

Manufactured to meet ANSI and OSHA standards. ROPS certified per SAE J1040. Engine complies with EPA Tier 0 emissions standards. Copyright © 1987 Bobcat Company; all rights reserved. For support, contact Bobcat Customer Service at 1-800-743-4343 or visit www.bobcat.com.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Engine won't start	Fuel, battery, glow plugs	Check fuel level, battery charge, glow plug operation
No hydraulic power	Fluid level, filters	Check hydraulic fluid, replace filters if restricted
Poor performance	Air filter, fuel quality	Replace air filter, check for clean diesel fuel
Excessive noise	Drive chains, bearings	Inspect drive chains for tension, check bearing condition
Hydraulic leaks	Hoses, fittings, seals	Inspect all hydraulic connections, replace damaged components

Reset: Check and reset all safety interlocks if machine won't operate.

Service: 1-800-743-4343; www.bobcat.com