You can download helpful scanned booklets by clicking on the items below. Some sections are in Adobe Acrobat pdf (Portable Document File) format. If you don't already have Acrobat Reader you can download it at the site below.

If you have Microsoft Internet Explorer, just right click on the section you want, and chose "Save Target As". When the file download window opens, specify the destination and save. The file is not "zipped"; the pdf format is already compressed. To open just double click the saved file and Acrobat will do the rest.

Or alternately, left click, and download will begin immediately. Acrobat will start in the Explorer window. There will be a blank screen for awhile as the file downloads. When the pages appear, click the "diskette" icon on the Acrobat bar. Name the file and save locally.

Download Adobe Acrobat Reader

ARD Magneto Instructions:
ARD CDI Magneto (RH Mounted) Installation Instructions BSA/Triumph/Norton Twins (html)
ARD CDI Magneto Installation Instructions 334-03 Triumph/BSA Unit Single (html)
ARD CDI Magneto Installation Instructions 334-04 Pre-Unit (html) 
ARD CDI Magneto Installation Instructions 334-07 Gold Star (html)

ARD Belt Driven Magneto Instructions (html)

AMAL Carburettor Instructions:
Amal Concentric Tuning Booklet 1.66MB (pdf)
Amal Concentric Tuning - Staking The Float Pivot Pin  (pdf)
Amal PreMonobloc Tuning Booklet (pdf)
Amal Tuning Booklet for: 259, 359; 261, 361; 265, 223 & 52, 352, 53, 353; 93, 393; 103, 143 types (pdf)
Amal Monobloc Tuning Booklet (pdf)
Amal MK11 Tuning (pdf)

Belt Drive Installation Instructions
Hayward Belt Drive Hints and Tips (html)
Q.P.D. Triumph/BSA Belt Drive Instructions (pdf)  
Q.P.D. Norton Atlas & Commando & PreUnit Triumph  Belt Drive Instructions (pdf)

Big Bore Kits
Big Bore Assembly Instructions, Triumph 500 (html)
Big Bore Assembly Instructions, Routt - for 650 Triumphs (pfd)
Big Bore Assembly Instructions, Morgo - for 650 Triumph Unit Twins (pdf)

Boyer Electronic Ignition Kit Installation Instructions:
Boyer Electronic Ignition Trouble Shooting (html)
Boyer Negative Ground Wiring (pdf)
Boyer Warranty Policy (html)
Boyer Norton Commando/Atlas Installation Instructions 331-01 (pdf)
Boyer Norton Commando/Atlas Installation Instructions Micro-Digital 331-01/A (pdf)
Boyer Norton Commando/Atlas Installation Instructions Micro-Power 331-01/B (pdf)
Boyer Triumph/BSA Unit Twin Installation Instructions 331-02 (pdf)
Boyer Triumph/BSA Unit Twin Installation Instructions Micro-Digital 331-02/A (pdf)
Boyer Triumph/BSA Unit Twin Installation Instructions Micro-Power 331-02/B (pdf)
Boyer Norton Twins & Triumph/BSA Unit Twin (with points in the side casing) Installation Instructions Racing Kit 331-02/C (pdf)
Boyer Triumph/BSA Triples Installation Instructions 331-03 (pdf)
Boyer Triumph/BSA Triples Installation Instructions Micro-Digital 331-03/A (pdf)
Boyer Triumph/BSA Triples Installation Instructions Micro-Power 331-03/B (pdf)
Boyer Triumph/BSA Triples Installation Instructions Racing Kit 331-03/C (pdf)
Boyer Triumph/BSA Singles Installation Instructions 1964 on 331-12 (pdf)
Boyer Triumph/BSA Singles Installation Instructions 1964 on, Micro-Digital 331-12/A (pdf)
Boyer Triumph/BSA Singles Installation Instructions 1964 on, Micro-Power 331-12/B (pdf)
Boyer Triumph/BSA Singles Installation Instructions 1964 on Racing Kit 331-12/C (pdf)
Boyer Triumph/BSA Unit Singles with Distributor Installation Instructions 331-13E (pdf)
Boyer Triumph/BSA Unit Singles with Distributor Installation Instructions Micro-Power 331-13/B (pdf)
Boyer Triumph/BSA Unit Singles with Distributor Installation Instructions Racing Kit 331-13/C (pdf)
Boyer Bullet Installation Instructions 331-14 (pdf)
Boyer Bullet Installation Instructions Micro-Digital 331-14/A (pdf)
Boyer Bullet Installation Instructions Micro-Power 331-14/B (pdf)
Boyer Installation Instructions for Micro Power Ignition Kit Coils - 331-17 & 331-18 (pdf)

Brake Fluid - DOT 5 silicone brake fluid warning (html)
Charging and no spark problems (html)
Crank Regrinding (html)
Crankshaft - Essay on Offset Cranks for Triumphs (pdf)
Disc Conversion Kit 12" for Triumph (558-033 ) Inst. (pdf)
Five Speed Gearbox Bulletin - Updating the Early Five Speed Gearbox (pdf)
Fork Brace (BCS #546-101/A) Norman Hyde Triumph Alloy (pdf)
Fork Brace (BCS #546-102/A) Norman Hyde Norton "Roadholder" Alloy (pdf)
Forward Control (BCS 541-41) Installation On BCS Custom Frames (html)
Head Gasket, T140 Flame Ring Type, Installation Instructions (pdf)  
Horn Servicing (pdf)  
K&N Air Filter Instructions (pdf)
Lucas Electrics (html) (Actually this page will only help you keep your sense of humour!)
Lucas Smoke (html)
Lucas Reconditioning Policy (html)
Leak Proof Fork Seal Instructions  (pdf)
Magneto, Joe Hunt Installation Instructions (html)
Magneto, Joe Hunt Diagram (pdf)
Norton Kick Start Crank Hitting the Muffler Problem (html)  

Oil Line Hookup: Answer to question we get asked every day on Triumph unit 500/650/750 is how to hook up oil lines, as service manual is not very helpful on this information, and hooking backwards equals disaster: ON  OIL JUNCTION JUNCTION BLOCK THAT BOLTS TO CRANKCASE, OUTER PIPE, FARTHER TO REAR OF ENG. IS RETURN, AND INNER, FORWARD PIPE IS FEED. Easy way to remember is R to R, F to F - Rear to Return, Front to Feed

Oil Pump Installation Instructions - Triumph
71-7317 4 Valve Triumph Unit Oil Pump Instructions  
70-9421/A Morgo Rotary Triumph Unit Oil Pump Kit Instructions   
70-3072/B Morgo Rotary Triumph Pre-Unit Oil Pump Instructions   
Morgo Triumph Rotary Oil Pump Frequently Asked Questions    

Morgo Ariel Sq4 (early) Oil Pump Instructions
Morgo Ariel Sq4 (late) Oil Pump Instructions   

Oil Recommendations From BCS (html)

Part Number Translation (html)
(Useful for looking up prices in the BCS Priceguide) 

Pazon Electronic Ignition Kit Instructions  

Power Units - Instructions  
332-104 Mity Max (Single Phase) Instructions (pdf)
332-104/A Tympanium (Single Phase) Instructions (pdf)
332-104/B Boyer (Single Phase) Power Unit Instructions (pdf)
332-104/C Sparx (Single Phase) Power Unit Instructions (pdf)
332-Series Podtronic (Single Phase) Power Unit Instructions (pdf)
332-104/D Boyer (Single Phase) Power Unit With Light Delay Inst. (pdf)
332-104/E Boyer (Single Phase) Power Unit With Charging Indicator Inst. (pdf)
332-104/F Sparx (Single Phase) Power Unit In Triumph Heatsink (html)

332-105 Mity Max (3 Phase) Power Unit Instructions (pdf)
332-105/A Sparx (3 Phase) Power Unit Instructions (pdf)
332-105/B Tympanium (3 Phase) Power Unit Instructions (html)
332-105/C Boyer (3 Phase) Power Unit Instructions (pdf)
332-105/D Boyer (3 Phase) Power Unit With Charging Indicator Instructions (pdf)

Pushrod Tube Sealing Bulletin 324 1969/70 Models
Putting your bike back on the road after an extended storage period (html)
Rearsets - Installation Instructions (pdf)
Rearsets - Installation Instructions Norman Hyde Commando Pre MKIII (541-108/A) (pdf)
Rearsets - Installation Instructions Norman Hyde Commando MKIII (541-153/A) (pdf)
Rearsets - Installation Instructions Norman Hyde LH shift T140 (541-154/A) (pdf)  
Rearsets - Installation Instructions Norman Hyde T150 (541-157/A) (pdf)  
Rearsets - Installation Instructions Norman Hyde T160 (541-162/A) (pdf)
Rectifier Testing (pdf)

RITA Kit Installation Instructions: 
Rita Magneto Replacement Kit 333-134 Instructions (pdf)
Rita Powerbase High Output Alternator Kit 333-131 Instructions (pdf)
Hi-Output Alternator Kit, Solid State, Replacement, Instructions 333-131/A (pdf)
Rita Electronic Ignition General Information (pdf)
Rita Electronic Ignition Twin Pickup Assembly 333-02 Instructions (pdf)
Rita Electronic Ignition Kit 333-100 For 1971 And Later Norton Commandos (pdf)
Rita Electronic Ignition Kit 333-100/A For Pre1971 Norton Twin Instructions (pdf)
Rita Electronic Ignition Kit 333-101 For Oil-In-Frame Triumph Twins Instructions (pdf)
Rita Electronic Ignition Kit 333-102 For T160 Triumph Triple Instructions (pdf)
Rita Electronic Ignition Kit 333-113 For Triumph T150 Triples Instructions (pdf)
Rita Electronic Ignition Kit 333-119 For BSA A50 & A65 Twins Instructions (pdf)
Rita Electronic Ignition Kit 333-120 For BSA Rocket III Triple Instructions (pdf) 
Rita Electronic Ignition Kit 333-121 For 63on Pre Oil-In-Frame Triumph Twins Inst. (pdf) 
Rita Electronic Ignition Kit 333-135 For Triumph/BSA Unit Singles Instructions (pdf )  
1979 Rita Ignition and Charging Trouble Shooting (pdf) 
To run Lucas Rita kits on negative ground systems (html)
Colour code changes when interchanging AB11 (smooth cover) and AB5 (finned cover with external resistor) amplifiers on Lucas Rita Electronic ignitions. (pdf)

Seat Cover Installation (html)
Simplified Wiring Diagram For British Twins (pdf) 
Simplified Wiring Diagram For British Twins With Boyer And Mity Max (pdf) 
Sludge Trap Tube Plug Removal Q&A (Triumph & BSA Twins) (html)
Steering Damper Kit for Commandos 06-4247 (pdf)

Triple Clutch (pdf)

Valve Guides  (html)
Vibration Failure (pdf) 

Wet Sumping (pdf)
Wiring Instructions (Supplemental) For BCS Commando Main Wiring Harness 345-1009 (pdf)