Those wound-up pieces of high-tensile steel under your rocker arms work so hard closing your valves over millions of cycles that they could probably use a replacement right about now. We're talking ...
Adjusting the valves on a Triumph Thunderbird Sport, Trophy, Daytona, Trident, Sprint, Tiger, Speed Triple, Legend or Adventurer Motorcycle. My Triumph Thunderbird Sport had about 9,000 miles on it ...