Hi

Can someone tell me how to remove the thermostatic fan switch on my 2013 beta Evo.

It looks as if it justs pushes in and is held in by an O ring, but I cannot get the old one out.

Thanks

Stuart

Search for '2013 beta Evo fan switch'. pictures show it to be threaded which only makes sense because there is some pressure there.

The thermostat is held in by a circlip, so you'll need circlip pliers to remove that.  For best access you'll have to drop the radiator out to the limit of the fan wires - you may have to release a couple of cable ties, then as the thermostat is quite a tight fit and I usually screw a self tapping screw into the back of it to help prise it out.

Hi, thanks for the replies.

The 4T switch is different from the 2T.

I have removed the circlip, so will give the self tapping screw a go.

 

I have replaced the switch and the fan but the bike is still overheating when it stands running for a while.

It looks to me as if the fan is running more slowly that I remember.  Can anyone tell me what voltage I should be getting at the fan?

Also does anyone know where the earth point is on the loom so that I can check the grounding?

Thanks

~12 volts D.C.  after the regulator 

~20 volts A.C. output from the stator

 

Edited August 22, 20242 yr by lemur

Does your fan blow or suck air through the rad ?    It's a DC motor so if it spins the wrong direction you have the polarity reversed.

Hi

I only had 1.6 volts at the fan.  Cleaned all the connectors particularly the one to the regulator.

Now all works fine, so must have just had a bad connection.

Thanks for all your help.

Took the bike out today and it overheated again.  Fan running slowly. 

Cleaned connections again, no joy.

By chance can across this thread -

As suggested disconnected the fuel solenoid (which was not working anyway) and fan now back up to speed.