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weak batt. or charging sys.?

As Breeze said, the ignition system takes 9-10 volts to operate, after that it will start to misfire, the charging system will start to suffer then
hello Jack, backfiring is the major symptom and I'm pretty sure it's getting fuel so I'll get a new batt. and check numbers on the charging sys.
 
Once you have checked whether the charing system is working or not if it is ok and you still have problems then just a thought
Using the stock cv carb in this part of the world i can suffer from carb icing symptoms are backfiring rough running and engine cutting out if i leave bike for a wee while heat from engine melts the ice and i am good to go for a while
the bad running is caused by a weak af mixture as the slow jet is first to ice up
although in your area i would not expect carb icing but dirt in the fuel system and or a partially blocked carb, filter or pipe may caused reduced fuel flow

Brian
 
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