Reposting this as it doesn't seem to have shown up...?
Hi Joachim
I have tested the fan thermoswitch in boiling water....it does not work so I will make a manual switch until I can get another one.
Pulled apart the thermostat and tested that too, but I don't have a mercury thermometer so not sure when it opens.....but it does work.
The two small O-rings on the other end of the brass rod are very perished so I will try to get something similar. They are meant to seal and I guess it makes the pump more efficient and means all the water will go through to the radiator, instead of recirculating.
Yes thanks I have located the small hex bolt and will use this to check for air when I refill the radiator.
update: I went to a supplier in Grenoble yesterday and got O-rings for the thermostat.
In Grenoble at least it is hard to find a good auto supply like I am used to in NZ, and all the moto shops don't have a good range...usually just carry one product line. No decent bike cleaners....NO bungee cords!!! Almost no tools.
I will crack the bungee mystery...I will