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General Topics/Tech TipsDiscussion on break in periods, rider comfort, seats and pad suggestions. Tech tips as they become available will be posted here.
You fail to mention which bike you have and if the tach is mechanical or electrical. If you have an electric tach this is normal. When the key is shut off the you will see this, if you turn on the key but do not start the needle should go to zero.
If you have the mechanical drive I would suspect that tach is sticking.