1972 BSA A70 Parts Supplement

Plate 23 A70 MODEL Except for the following, all other items are as A65 Lightning Key No. Spa res _,-o. Description Per Set 1 - ... .., -- - Connec tingrod - right .. 1 / I-_ : 2 -i- _~:9ì Bolt - flywheel to crankshaft 3 3 -· ..... ,,.......,~ Shell bearing - connecting rod big-end (stan dard) 4 1- ~ .... _,.......,,_ 3 -1-_n9.:- Shell bearing - connecting rod big-end ( · 010" undersize) 4 3 -~ ....., r9.,. Shell bearing - connect ing rod big-end ( · 020" undersize) 4 1- _c ...., 3 - i- "'695 Shell beari ng - connecting rod big-end ( · 030" unders ize) 4 4 -1- .::683 Tube - crankshaft sludge trap .. 1 5 -~- '>682 Plug - cran kshaft sludge trap tube I 6 ï:-?697 Bush - cranksh af t(standard) . . 1 6 -l-?699 Bush - cra nkshaft ( · 010" under size) 1 6 ï 1-2701 Bush - crankshaft ( · 020" undersize) I - -1-2704 Washer - oil pump dr ive pinion 1 I 8 71-?689 Pinion - cranks haf t 1 9 71-2681 Thrust washer - crankshaft 1 10 71-2684 Shim - crankshaft ( · 003 ") as reqd . 10 71-2685 Shim - cra nkshaf t( · OO 5") as reqd. 10 71-2686 Shim - cra nkshaft (·O 1 O") as r..eqd. 11 71-2210 Oil pressure release valve I 12 71-2713 Crankcase complete wit h fixed fitting s .. I 13 71-2687 Flywheel 1 14 71-2690 Bolt - connecting rod . . 4 15 60-3761 Nu t - connecting rod bolt (-rl;-" UN.F.) 4 16 71-2669 Crankshaf t l 17 71-2673 Connecting rod - left 1 18 71-2710 Piston complete (sta ndard) 2 18 71-284 Piston complete ( · 020" over size) 2 18 71-285 Piston complete ( · 040" oversize) 2 71-2708 Crank shaf tand flywheel assembly 1 71-2706 Engine and gearbox unit complete, less carburetter and exhaust system . . I 68-3089 Gearbox sprocket (21 teeth) I 68-0686 Distance piece - engine sprocket 1 60-3728 Transfer - sidecover 2 67