Tech Help Files
You can download helpful scanned booklets by clicking on the items below.
Some sections are in Adobe PDF (Portable Document File) format. 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 Adobe will do the rest.
Or alternately, left click, and download will begin immediately. Adobe Reader
will start in the Explorer window. When the pages appear, click the "diskette"
icon on the Adobe Reader bar. Name the file and save locally.
Remember, if you need further assistance, the helpful staff of British Cycle
Supply is just a call or an e-mail away.
Parts Books
ARD Magneto Instructions
- ARD CDI Magneto (RH Mounted) Installation Instructions BSA/Triumph/Norton Twins
- ARD CDI Magneto Installation Instructions Triumph/BSA Unit Single 334-03
- ARD CDI Magneto Installation Instructions Pre-Unit 334-04
- ARD CDI Magneto Installation Instructions Gold Star 334-07
AMAL Carburetor Instructions
- Amal Concentric Tuning Booklet [pdf]
- Amal Concentric Tuning - Staking The Float Pivot Pin [pdf]
- Amal Floats [pdf]
- Amal GP2 Manual [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
- 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
- Big Bore Assembly Instructions, Aerco - for 650 Triumphs [pdf]
- Big Bore Assembly Instructions, Routt - for 650 Triumphs [pdf]
- Big Bore Assembly Instructions, Morgo - for 650 Triumph Unit Twins [pdf]
Boyer Electronic Ignition Kit Installation Instructions
- Boyer Electronic Ignition Trouble Shooting
- Boyer Trouble Shooting link [external site]
- Boyer Negative Ground Wiring [pdf]
- Boyer Positive & Negative Ground Wiring Diagrams (Thanks to John Healy) [pdf]
- Boyer Warranty Policy
- 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
- Cable Making Instructions
- Calibrating Odometers and Speedometers
- CAM TIMING SHEET FOR BRITCYCLE 71-7017/A (71-3355 profile) [pdf]
- Charging and No Spark Problems
- Clutch Conversion - BSA six spring clutch to four or three spring Triumph clutch
- Clutch Drag
- Clutch, Norton - Improving the Norton Commando Clutch
- Crank Regrinding
- Crankcase Breathing see also, Breathing Kits
- Crankshaft - Essay on Offset Cranks for Triumphs [pdf]
- Disc Conversion Kit 12" for Triumph (558-033) Inst. [pdf]
Decals
- EasyCap Magneto Condensectomy Booklet [pdf]
- Fairing, Handlebar "Viper Type" Install Instructions - 566-01 [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
- Head Gasket, T140 Flame Ring Type, Installation Instructions [pdf]
- Horn Servicing [pdf]
- K&N Air Filter Instructions [pdf]
Lucas Electrics
- Lucas Electrics (Actually this page will only help you keep your sense of humour!)
- Lucas Smoke
- Lucas Reconditioning Policy
- Leak Proof Fork Seal Instructions [pdf]
- Magneto, Joe Hunt Installation Instructions
- Magneto, Joe Hunt Visual Installation Instructions For Tri Twin [pdf]
- Magneto, Joe Hunt Diagram [pdf]
- Norton Kick Start Crank Hitting the Muffler Problem
- Oil Line Hookups
Measurements
- How to Measure Gastanks [pdf]
- How to Measure Handlebars [pdf]
Oil Pump Installation Instructions - Triumph
- Oil Pump Instructions - 71-7317 Four Valve Triumph Unit
- Oil Pump Instructions - 70-9421/A Morgo Rotary Triumph Unit
- Oil Pump Instructions - 70-3072/B Morgo Rotary Triumph Pre-Unit
- Morgo Triumph Rotary Oil Pump Frequently Asked Questions
- Oil Pump Instructions - Morgo Ariel Sq4 (early) [pdf]
- Oil Pump Instructions - Morgo Ariel Sq4 (late)
- Oil Recommendations From BCS
- Part Number Translation (Useful for looking up prices in the BCS Priceguide)
Power Unit Instructions
- PBOX00212 Dynamo Regulator 12 Volt POS. Earth 332-01 [pdf]
- PBOX00312 Dynamo Regulator 12 Volt NEG. Earth 332-01/A [pdf]
- PBOX00206 Dynamo Regulator 6 Volt POS. Earth 332-02 [pdf]
- PBOX00306 Dynamo Regulator 6 Volt NEG. Earth 332-02/A [pdf]
- Mity Max (Single Phase) Instructions 332-104 [pdf]
- Tympanium (Single Phase) Instructions 332-104/A [pdf]
- Boyer (Single Phase) Power Unit Instructions 332-104/B [pdf]
- Sparx (Single Phase) Power Unit Instructions 332-104/C [pdf]
- Podtronic (Single Phase) Power Unit Instructions
- Boyer (Single Phase) Power Unit With Light Delay Inst. 332-104/D [pdf]
- Boyer (Single Phase) Power Unit With Charging Indicator Inst. 332-104/E [pdf]
- Sparx (Single Phase) Power Unit In Triumph Heatsink 332-104/F
- Mity Max (3 Phase) Power Unit Instructions 332-105 [pdf]
- Sparx (3 Phase) Power Unit Instructions 332-105/A [pdf]
- Tympanium (3 Phase) Power Unit Instructions 332-105/B
- Boyer (3 Phase) Power Unit Instructions 332-105/C [pdf]
- Boyer (3 Phase) Power Unit With Charging Indicator Instructions 332-105/D [pdf]
- Piston Ring Gap Information [pdf]
- Pushrod Tube Sealing Bulletin 324 1969/70 Models [pdf]
- Putting your bike back on the road after an extended storage period
- 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 Electronic Ignition General Information [pdf]
- Rita Magneto Replacement Kit Instructions 333-134 [pdf]
- Rita Powerbase High Output Alternator Kit Instructions 333-131 [pdf]
- Hi-Output Alternator Kit, Solid State, Replacement, Instructions 333-131/A [pdf]
- Rita Electronic Ignition Twin Pickup Assembly Instructions 333-02 [pdf]
- Rita Electronic Ignition Kit For 1971 And Later Norton Commandos 333-100 [pdf]
- Rita Electronic Ignition Kit For Pre1971 Norton Twin Instructions 333-100/A [pdf]
- Rita Electronic Ignition Kit For Oil-In-Frame Triumph Twins Instructions 333-101 [pdf]
- Rita Electronic Ignition Kit For T160 Triumph Triple Instructions 333-102 [pdf]
- Rita Electronic Ignition Kit For Triumph T150 Triples Instructions 333-113 [pdf]
- Rita Electronic Ignition Kit For BSA A50 & A65 Twins Instructions 333-119 [pdf]
- Rita Electronic Ignition Kit For BSA Rocket III Triple Instructions 333-120 [pdf]
- Rita Electronic Ignition Kit For 63on Pre Oil-In-Frame Triumph Twins Inst. 333-121 [pdf]
- Rita Electronic Ignition Kit For Triumph/BSA Unit Singles Instructions 333-135 [pdf]
- 1979 Rita Ignition and Charging Trouble Shooting [pdf]
- To run Lucas Rita kits on negative ground systems
- 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
- Checking Your Shocks
- 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)
- Starter Motor T160, High Power, 391-26518/A - Negative Ground and T150 conversions
- Steering Damper Kit for Commandos 06-4247 [pdf]
- Triple Clutch [pdf]
- Tympanium Electronic Voltage Regulator-Rectifier 332-104/A [pdf]
- Tyre Sidewall Markings Guide [external site]
- Wet Sumping [pdf]
- Whitworth
- Wiring Instructions (Supplemental) For BCS Commando Main Wiring Harness 345-1009 [pdf]