Perhaps you could be a bit more specific about what happens when the bike 'shuts down'. Some of the knowledgeable folk here might be able to help alleviate the problem so you can ride with peace of mind.Who carries spares? I recently had difficulty with the Bonneville shutting down...
What does it do just before shutting down?. Does it splutter and appear to be running out of fuel, slowing down gradually? or does it just cut out instantly?.My bike repeatedly shuts down after 30 miles and restarts after 30 minutes. The fuel tank breather and tip-over valve are OK. The pick-up coil reads the proper resistance plus the air gap is correct (.8mm).
If this doesn't solve the problem, it may be a case of the seat pan pressing on the igniter, which may have been aggravated by the saddlebag yoke. This has happened to a number of people and is discussed on several threads, such as:I loosened the tipover and reinstalled the breather tube. I even switched gas caps (from my Adventurer).
I drove the bike around town twice (20 miles) and have not experienced a problem yet sans the saddle bags.
There are some differences of opinion on that. My money is on the breather tube and tip-over valve combination. The cap has a spring-loaded vent valve that releases excess pressure due to fuel heating up in the Sun, etc.Should the fuel caps vent or does the breather tube vent the fuel tank?