1986 Jeep CJ7 Owners Manual PDF

The 1986 Jeep CJ7 is a classic 4x4 off-road vehicle featuring a rugged body-on-frame construction, available with either the 2.5L four-cylinder or 4.2L inline-six engine, manual or automatic transmission options, part-time four-wheel drive system, removable doors and soft top, and legendary off-road capability. Below are key sections covering operation, maintenance, specifications, and troubleshooting for this iconic American off-roader.

1. Vehicle Overview 2. Instrument Panel 3. Operating Instructions 4. Technical Specifications 5. Maintenance Schedule 6. Four-Wheel Drive Operation 7. Troubleshooting Guide 8. Safety Information 9. Warranty Information

Vehicle Overview

The 1986 Jeep CJ7 features classic styling with modern improvements including an extended wheelbase for improved stability, optional hard top, and improved interior comfort features.

Feature	Description
Wheelbase	93.5 inches
Overall Length	152.3 inches
Engine Options	2.5L AMC 150 I4 or 4.2L AMC 258 I6
Transmission	4-speed manual, 5-speed manual, or 3-speed automatic
Transfer Case	Dana 300 part-time 4WD
Front Axle	Dana 30
Rear Axle	AMC Model 20
Fuel Capacity	15.5 gallons
GVWR	4,200 lbs

Instrument Panel

Standard instrumentation includes speedometer, fuel gauge, temperature gauge, oil pressure gauge, and ammeter. Warning lights for brake system, seat belts, and four-wheel drive engagement.

Speedometer: 0-85 mph with odometer and trip meter
Fuel Gauge: E-F markings with low fuel warning light
Temperature Gauge: C-H range for engine coolant
Oil Pressure Gauge: Normal operating range 30-60 psi
Ammeter: Shows charging system status

NOTE: All gauges should be monitored regularly during operation.

Operating Instructions

Proper starting and driving procedures ensure optimal performance and longevity.

Starting: Depress clutch (manual), turn key to start position
Warm-up: Allow engine to reach normal operating temperature
Shifting: Smooth clutch operation for manual transmission
Braking: Allow greater stopping distance when loaded
Parking: Set parking brake on inclines

CAUTION! Always wear seat belts. Never shift into 4WD on dry pavement.

Technical Specifications

Engine: 2.5L I4 (150 CID) or 4.2L I6 (258 CID)
Horsepower: 105 hp @ 5,000 rpm (2.5L) / 112 hp @ 3,200 rpm (4.2L)
Torque: 132 lb-ft @ 2,800 rpm (2.5L) / 210 lb-ft @ 2,000 rpm (4.2L)
Compression Ratio: 9.2:1 (both engines)
Fuel System: Carter BBD 2-barrel carburetor
Ignition System: Electronic breakerless
Cooling System: 12.5 quart capacity with pressure cap
Electrical: 12-volt negative ground, 60-amp alternator

Maintenance Schedule

Regular maintenance is essential for reliable operation and longevity.

Interval	Service Required
Every 3,000 miles	Oil and filter change
Every 6,000 miles	Lube chassis and driveshafts
Every 12,000 miles	Replace air filter, check brakes
Every 30,000 miles	Replace fuel filter, check timing
Every 2 years	Replace coolant and brake fluid

WARNING! Use only recommended fluids and filters.

Four-Wheel Drive Operation

The part-time 4WD system provides exceptional off-road capability.

2H Position: Normal driving on dry pavement
4H Position: For slippery conditions at any speed
4L Position: For extreme off-road or heavy pulling
Engaging 4WD: Come to complete stop, shift transfer case lever
Disengaging: Stop vehicle, shift to 2H position

IMPORTANT: Never operate in 4WD on dry pavement to avoid driveline damage.

Troubleshooting Guide

Symptom	Possible Cause	Corrective Action
Hard starting	Fuel delivery, ignition	Check fuel pump, spark plugs, ignition timing
Overheating	Cooling system	Check coolant level, thermostat, water pump
Oil pressure low	Oil level, pump	Check oil level and condition, oil pump operation
4WD won't engage	Linkage, vacuum	Check shift linkage, vacuum disconnect system
Brake pull	Brake system	Inspect brake pads, calipers, fluid level

Safety Information

Always follow safety precautions when operating your Jeep CJ7.

Wear seat belts at all times
Secure all cargo properly
Check tire pressure regularly
Maintain safe following distances
Use 4WD appropriately for conditions
Never exceed GVWR ratings

WARNING! Rollover risk exists due to high center of gravity.

Warranty Information

1986 Jeep CJ7 vehicles were covered by AMC's comprehensive warranty program including:

Basic Warranty: 12 months/12,000 miles
Powertrain: 5 years/50,000 miles
Corrosion: 3 years/unlimited mileage
Emission System: 5 years/50,000 miles

Contact your local AMC/Jeep dealer for warranty service and claims.