July 11, 200917 yr Just bought a 2005 SY 250. Is the cooling fan on all the time the engine is running or is it on a thermostatic control? How hot does it get before the fan cuts in? Any advice would be appreciated.
July 11, 200917 yr its a thermostat....but in Oklahoma at 105F it runs all the time! in more normal temps it cuts in and out about every 2-5 minutes.
July 11, 200917 yr Author Thanks. Any idea how to test if it's operating properly? Edited July 11, 200917 yr by BigMike1961
July 12, 200917 yr Put new one in,that will tell you if the old one is kuput.It's not worth cooking engine.
July 12, 200917 yr remove the two wires from the thermostat (brass thing on the bottom left of radiator). loop out the two wires with a small piece of wire with a male spade connector on each end, thereby bypassing the thermostat. Kick the bike over, the fan should come on straight away. If the fan comes on then the thermo was shagged. if the fan does not come on your problem is somewhere else in this circuit.
July 13, 200917 yr Author Great, thanks for the advice. on the wiring bypass. where do you buy the thermostat? Anyone got a link?
July 14, 200917 yr http://www.birkettmotosportukltd.co.uk/ Nigel is the official importer. Birkett Motosport UK Limited The Old Woodyard, Foxfield Road, Broughton-in- Furness, Cumbria LA20 6EZ Tel:01229 716806 Fax:01229 716214 It is
July 14, 200917 yr Author Thanks for the advice & info everyone. I'll be checking the fan/thermostat by bypassing the thermostat this weekend. Would there be a problem wiring the fan permanently on as there's a trial on Sunday I'd rather like to enter. The Scorpa is a revelation compared to the TL125 I'd been riding.
July 20, 200917 yr Author Tested with the jump wires- - no fan! took the bike apart some put 12V into the fan and it spam up fine. Checked all the connections, some seemed a bit corroded, Cleaned them up and applied some vasaline to keep corrosion at bay and all seems well. Thanks again for the advice.
April 30, 20224 yr Old topic but just for info..... My scorpa is fitted with an aftermarket thermostat in line with the top hose. Space is a bit tight under the tank and when I removed it all was well but when the tank was replaced it distorted the fan housing and jammed the fan. Rearranging same cables and a connector solved the problem... after buying a new (unnecessary) thermostat!
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