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The bolt at the crank arm needs to first be loosened using an adjustable wrench in order to remove the crank on a Tunturi exercise bike. Pull the crank arm away from the bike after the bolt has been released. If this doesn't work and you hear a clicking noise, it may be necessary to either tighten the crank arm further or service the crank bearings. It is preferable to take the bike to a bike shop in this situation so that it may be serviced.
We don't have anything. We are FIXYA dot com, we are not Tunturi. Parts seem to be no existent for this make and model. I remember I had Puch Tunturi exercise bikes at a newly opened sports centre in Dunstable, England in 1975!
My Tunturi ergometer was squealing like a pig in heat. My husband removed the speedometer and it is wonderfully quiet. I do not use the speedometer anyways - it is like new!!
IF you have the one i have, there is a knob with two connected arrows and a plus and minus sign. turn toward the plus, more resistance, turn toward the minus, less resistance.
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