Allan key adjustable tappet adjuster set, includes the lock nuts and Allan key tool, makes adjusting the valve clearances easier with the allan key.
Fits all 650 and 750cc T110 T120 T140, Pre-unit and unit twins up to 1978 NB see note below
Do not fit if tops of valves are worn, make sure valve stem tops are in good condition, when replacing valves, it is advisable to replace adjusters as well.
1978 was change over year and both Cycle thread and UNF thread adjusters were fitted, engine numbers after No 02690 in 1978 should be UNF thread
