bigmike1961 Posted July 11, 2009 Report Share Posted July 11, 2009 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. Quote Link to comment Share on other sites More sharing options...
nottoogood Posted July 11, 2009 Report Share Posted July 11, 2009 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. Quote Link to comment Share on other sites More sharing options...
bigmike1961 Posted July 11, 2009 Author Report Share Posted July 11, 2009 (edited) Thanks. Any idea how to test if it's operating properly? Edited July 11, 2009 by BigMike1961 Quote Link to comment Share on other sites More sharing options...
coldcake Posted July 12, 2009 Report Share Posted July 12, 2009 Put new one in,that will tell you if the old one is kuput.It's not worth cooking engine. Quote Link to comment Share on other sites More sharing options...
designtime Posted July 12, 2009 Report Share Posted July 12, 2009 I had the same problem it was the thermostat Quote Link to comment Share on other sites More sharing options...
arnoux Posted July 12, 2009 Report Share Posted July 12, 2009 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. Quote Link to comment Share on other sites More sharing options...
bigmike1961 Posted July 13, 2009 Author Report Share Posted July 13, 2009 Great, thanks for the advice. on the wiring bypass. where do you buy the thermostat? Anyone got a link? Quote Link to comment Share on other sites More sharing options...
designtime Posted July 14, 2009 Report Share Posted July 14, 2009 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 Quote Link to comment Share on other sites More sharing options...
bigmike1961 Posted July 14, 2009 Author Report Share Posted July 14, 2009 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. Quote Link to comment Share on other sites More sharing options...
bigmike1961 Posted July 20, 2009 Author Report Share Posted July 20, 2009 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. Quote Link to comment Share on other sites More sharing options...
farmerboy Posted April 30, 2022 Report Share Posted April 30, 2022 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! Quote Link to comment Share on other sites More sharing options...
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