Manual Classic Amal Carb Tune Mk 11 [PDF]

Amal Mark II Technical Manual

Download the complete PDF version using the green download button at the top right of this page for the Amal Mark II Technical Manual. Originally published in Modern Cycle magazine, this detailed reference introduces the Amal Mark II carburettor series and explains its design improvements, tuning characteristics, dimensions, service parts and component layout for both two-stroke and four-stroke applications. The manual is especially useful for riders and tuners working with Norton, Triumph, BSA and other classic British motorcycles fitted with Amal Mark II carburettors.

The article begins by outlining the major changes introduced with the Mark II series, including improved float systems, removable high-speed air bleeds, five-position needle adjustment, larger pilot jet arrangements and rubber-mounted carburettor bodies to reduce vibration-related frothing. It also compares the available carburettor series and venturi sizes, covering the 2600, 2900 and 2000 ranges.

Later pages provide dimensional drawings, exploded component diagrams, service part listings, float options, needle jet and main jet comparisons, spray tube references and high-speed air bleed specifications. Several photographs show internal carburettor components, throttle slides, float bowls, velocity stacks and optional racing bellmouths used with the Mark II series.

Contents Include

• Amal Mark II carburettor technical overview
• Mark II design improvements and tuning features
• 2600, 2900 and 2000 series carburettor dimensions
• Rubber-mounted carburettor body design
• Five-position needle adjustment system
• Removable high-speed air bleed arrangement
• Float and float bowl options
• Needle jet, main jet and spray tube references
• Two-stroke and four-stroke jet comparisons
• Service parts listings and exploded diagrams
• Velocity stacks and racing bellmouth options
• Needle marking charts and carburettor tuning references