Thermostat clogged

[Twostrokesover]

I believe my thermostat(s) on my 250 pro xs is clogged with wood and/or other debris.

Should I expect the obstruction to clear itself out over the course of normal operation, or is it necessary to manually remove the debris? I am not particularly concerned about it now during the hot weather, but I am hoping that the issue clears itself up before the water and weather cools. Any ideas anyone?

[EuropeanAM]

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Twostrokesover &raquo;</TD></TR><TR><TD CLASS="quote">I believe my thermostat(s) on my 250 pro xs is clogged with wood and/or other debris.

Should I expect the obstruction to clear itself out over the course of normal operation, or is it necessary to manually remove the debris? I am not particularly concerned about it now during the hot weather, but I am hoping that the issue clears itself up before the water and weather cools. Any ideas anyone?

</TD></TR></TABLE>

You SHOULD be concerned with it NOW. A clogged thermostat will result in "Thermostat Faults"... causing Engine Guardian to limit your power (in an attempt to prevent COLD SEIZURE).

Remove the thermostats- on your engine, you can actually compress the spring from the backside, un-clip the arms that hold the spring (all of this done by hand).

Wash the thermostats in mild soap and warm water... use a toothbrush if needed to brush away any "sticking" debris. Reassemble.... make sure that the upper and lower arms are at 90 degree angles of each other (so they don't rub.... sounds funny but you'll understand once you take one apart).... and reinstall.

If the the debris is WOOD MEDIA.... good idea to remove the poppet valve, and start the engine, allowing it to idle on the flush attachment for 45-60 seconds (no more than 60 seconds) to assist in flushing out any remaining debris.

[chris20]

The way Don said to clean the thermostats is the correct way to do it, but what I do is heat them up with a lighter and and when they open clean the debris out of them that way, that way I don't have to take nothing apart. Been doing it this way for years with no problems