🏷️ Basic Information

Make:

Jaguar

Model:

Mark 10

Engine Variant:

4.2 Litre (4.2s)

Internal Model Code:

XJ6 (Early Series 1 equivalent, though pre-dating the XJ nameplate officially)

👋 Introduction

Description:

The Jaguar Mark 10 (later known as the Jaguar 4.2 Litre) represented the pinnacle of Jaguar's luxury saloon offerings in the 1960s. It was positioned as a premium, high-performance grand tourer aimed at discerning buyers who valued comfort, speed, and sophisticated styling.

Competitors:

Competed with other luxury saloons of its era such as the Mercedes-Benz S-Class, Rolls-Royce Silver Shadow, Bentley T-Series, and certain American luxury sedans. Its combination of performance and luxury was a key differentiator.

Vehicle Highlights:

Independent suspension on all wheels, powerful straight-six engines, luxurious interior appointments, distinctive aerodynamic styling, spacious cabin.

Diy Suitability:

This manual is invaluable for owners looking to perform their own maintenance and repairs, saving significant costs compared to dealership servicing. The detailed explanations and diagrams cater to those with basic mechanical aptitude.

📋 Manual Details

Primary Coverage:

Full Mechanical and Electrical Service, Repair, and Overhaul Procedures

Secondary Coverage:

Chassis, Bodywork, Heating and Ventilation Systems, Troubleshooting, Diagnostics, and Specifications

Estimated Page Count:

300-500+ pages (typical for comprehensive workshop manuals of this era)

Type:

Workshop/Service Repair Manual

Language:

English

Format:

Likely printed manual; digital format (PDF) is common for modern sales

Digital File Type Common:

PDF (Searchable, Printable)

📖 Manual Coverage

Engine:

Engine Overhaul and Rebuilding, Engine Performance Tuning, Firing Orders, Timing Belt Service Procedures (if applicable to the 4.2L engine variant covered), Engine Mounts, Cooling System, Lubrication System

Transmission:

Transmission Removal and Installation, In-Car Servicing, Clutch Operation and Adjustment (Manual Transmission), Hydraulic System (Automatic Transmission), Gearbox Overhaul

Brakes:

Brake Servicing Procedures, Hydraulic System, Disc Brake Overhaul, Parking Brake System, Brake Fluid Specifications

Suspension Steering:

Front End Alignment Procedures and Specifications, Suspension Component Replacement (Wishbones, Bushings, Shock Absorbers), Steering Gearbox Overhaul, Power Steering System Servicing

Electrical Lighting:

Complete Wiring Diagrams, Ignition System, Starting System, Charging System, Lighting Circuits, Instruments and Gauges, Windscreen Wiper System, Horn Operation

Fuel System:

Fuel Pump Operation, Carburetor Overhaul and Adjustment (e.g., SU or Zenith-Stromberg), Fuel Tank Servicing, Fuel Lines

Bodywork Chassis:

Body Panel Repairs, Door Mechanisms, Window Regulators, Hood/Boot Latch Mechanisms, Chassis Lubrication Points

Air Conditioning:

Air Conditioning Service and Capacities, Refrigerant Types, System Charging, Component Replacement

Wheel Hubs Bearings:

Wheel bearing adjustment and replacement, hub maintenance.

Maintenance:

Scheduled Maintenance, Fluid Level Checks and Replacements, Filter Changes, Lubrication Procedures

Troubleshooting:

Troubleshooting and Diagnostics Charts, Symptom-Based Fault Finding, Diagnostic Trouble Tree Charts

Repair:

Step-by-Step Repair Procedures for all major systems

Rebuild:

Complete Engine Overhaul and Rebuilding procedures

Installation:

Component Removal and Installation procedures

U Joint Cv Joint Service:

U-Joint and CV-Joint Service Procedures (where applicable, e.g. driveshaft U-joints).

Level:

Comprehensive; suitable for professional mechanics and experienced DIY enthusiasts

Illustrations Diagrams:

Detailed illustrations, exploded views, and schematics

Specifications:

In-depth technical specifications, including torque values, clearances, tolerances, and fluid capacities

Diagnostics:

Detailed diagnostic procedures, including troubleshooting charts and potential fault resolutions

Torque Specifications:

Complete torque specifications for all major fasteners and components.

Vacuum Diagrams:

Vacuum diagrams for engine and ancillary systems.

📊 Manual Specifications

Digital Format Notes:

If sold digitally, expect a searchable PDF with high-resolution scans or digitally created pages. Printable.

Print Quality Notes:

Professional printing on durable paper is standard for original manuals. High-quality reproduction is expected.

Binding Type:

Likely a perfect-bound or spiral-bound manual for ease of use in a workshop environment.

Paper Type:

Durable, slightly glossy paper suitable for workshop environments; resistant to grease and dirt.

Coverage Type:

Comprehensive Workshop Manual, covering all aspects of repair and maintenance.

⚙️ Engine Specifications

Engine Type:

DOHC Inline 6-cylinder

Displacement:

4.2 Litres (4235 cc)

Bore X Stroke:

92.07 mm x 105.6 mm

Compression Ratio:

8.0:1 or 8.5:1 (depending on market/tune)

Horsepower:

Approximately 245-265 bhp (Gross) at 5400 rpm

Torque:

Approximately 331-340 lb-ft (Gross) at 3750 rpm

Carburetion:

Twin SU HD8 or Zenith-Stromberg CD Series Carburetors

Fuel Type:

Premium Unleaded Gasoline (Octane rating typically 95-98 RON)

Ignition Type:

Distributor with Coil Ignition

🔧 Transmission

Transmission Type:

3-Speed Automatic (Borg-Warner DG250 / BW35)

Transmission Type Optional:

4-Speed Manual with Overdrive (Moss Gearbox or Laycock de Normanville overdrive)

Automatic Features:

Column shift or floor shifter, hydraulic torque converter

Manual Features:

Clutch operation, Laycock overdrive activation on 3rd and 4th gears

Automatic Transmission Fluid:

Dexron II or equivalent ATF (check specific manual for precise recommendation)

Manual Transmission Fluid:

GL-4 Gear Oil (e.g., SAE 80W-90 or SAE 90)

Automatic Transmission Capacity:

Approximately 8-10 pints (depending on torque converter fill)

📐 Dimensions

Length:

Approximately 193.5 inches (4915 mm)

Width:

Approximately 70.5 inches (1791 mm)

Height:

Approximately 53 inches (1346 mm)

Wheelbase:

Approximately 117 inches (2972 mm)

Curb Weight:

Approximately 3900-4200 lbs (1769-1905 kg)

Gross Vehicle Weight Rating:

Approximately 4700-4900 lbs (2132-2223 kg)

🛡️ Safety Features

Crash Test Data:

No formal crash test ratings available for this era of vehicle. Safety features were primarily passive.

Braking System:

Girling All-Wheel Disc Brakes (Ventilated Front Discs)

Parking Brake:

Handbrake operating on rear wheels

Seat Belts:

Front seat belts were often standard or optional; rear seat belts less common initially.

Steering Column:

Collapsible steering column design (introduced later in production for some models)

💡 Technology Features

Radio System:

Original fitment often included an AM/FM radio; period-appropriate upgrades are common.

Cruise Control:

Optional on some models, typically a Smith's vacuum-operated system.

Original Connectivity:

None by modern standards; focus on mechanical and driving experience.

🔧 Maintenance

Oil Change:

Every 3,000 miles or 6 months, whichever comes first.

Grease Points:

Check and lubricate grease points (kingpins, shackle pins, etc.) every 3,000-6,000 miles.

Tune Up:

Periodic tune-ups including spark plugs, ignition points, and carburetor adjustments as needed, typically every 6,000-12,000 miles.

Engine Oil Specification:

API SF/SG rated, SAE 20W-50 or SAE 20W-40 (depending on climate and original recommendation). Consider modern multigrade oils with ZDDP additive for flat-tappet camshaft protection.

Coolant Specification:

Ethylene Glycol based coolant (50/50 mix with distilled water) for corrosion protection.

Engine Oil Capacity:

Approximately 13 pints (including filter)

Coolant Capacity:

Approximately 20 pints

Common Problems:

Rust/corrosion (especially sills, wheel arches, boot floor), carburetor tuning issues (flat spots, rough idle), Lucas electrical component reliability, steering rack wear, rear axle whine, engine oil leaks.

Common Repairs:

Resealing engines and transmissions, carburetor rebuilds, suspension bushing replacement, brake caliper overhaul, electrical wiring repairs.

📚 Vehicle History

Jaguar Legacy:

Jaguar Cars, founded by Sir William Lyons, has a rich heritage of building high-performance luxury sports cars and saloons, known for their engineering innovation, elegant styling, and racing success.

Predecessors Successors:

The Mark 10 was an evolution of Jaguar's larger saloon line, succeeding the Mark IX and Mark 2 (though the Mark 2 was smaller). It was ultimately superseded by the Jaguar XJ6 in 1968, which carried forward the philosophy of a refined, powerful luxury saloon.

Production Years:

1961-1970 (as Mark 10 / 4.2 Litre)

Manufacturing Location:

Coventry, England

🏆 Awards & Recognition

Automotive Press:

While specific awards are rare for individual models of this era, the Mark 10 was consistently praised by automotive journalists for its blend of performance, luxury, and value compared to its more expensive rivals.