Husqvarna 385 I have a husqvarna 385 saw. It starts good, idles good, but as soon as you rev the saw it starts to cut out and runs very rough. but returns to a perfect idle.

Sounds like a clogged main jet.

What may be happening is that the carburetor is set too lean, not enough oxygen in the mix... richen the carburetor a little more and test it out, repeat procedure.

This is a common problem. Your carburetor is set too lean causing it to starve for oxygen, richen the carb setting a bit...

Leaking gasket carb to head.

Please be more specific with your question.

Does it run O.K. with high revs. with no load, but dies when you start to cut (load) ? If that is the case your carb. needs to be adjusted and that is difficult to put into words. Without knowing what make of carb you have because they can change from year to year, and also depends on the model. Without knowing make of carb I suggest you try to turn the L (low) and H (high) needles in (clockwise) until they are lightly seated so you don't damage the needle or seat. Now turn them both out (counterclockwise) one turn as a start. Start your saw to let it warm up now rev it up it should not hesitate or run rough while reving up. If it does turn low needle out 1/4 turn or more if needed until it does not hesitate. (turning any needle out will let in more gas turning in less gas) If you get this far good idling and reving up, now adjust high needle the same way. With high needle you can also try turning it in. keep on adjusting needles in or out in small increments until it runs right. If you cannot get it running right after all this, you probably need a carb overhaul, just a cleaning or carb kit if diaphrams are stiff or damaged. I hope this helps you. Please forgive grammar errors. Let me know how you made out.

I think an air leak and she is running lean. Maybe time for some pressure/vacuum testing. Continuing to tweak the carburetor may camouflage a larger problem until the saw fails.

If you have more questions or need additional help please reply below and I will get back to you. Thank you for using FixYa and Good Luck. HTH
Lou

Hello J
An example Husqvarna "IPL, 385/ 390 (EPA), 2006-10 ,Chain Saw" follows (may not be your saw):
http://weborder.husqvarna.com/order_static/doc/usa/2006/I06000/I0601137.pdf
I think pn 544 32 49-06 on Detail H is a fuel vent hose that has cracked or become disconnected. It appears the only other hose is the carburetor feed. If my saw and one hose has failed I would change both.

All 385 IPLs can be found here:
HusqvarnaUSA.com
http://www.husqvarna.com/us/homeowner/support/download-manuals/
Enter the 3 digit model number (no XPs, Es, just the numbers)
Serial number decode – useful when downloading IPLs and Manuals
06 1500198
06 = year produced – 2006 (single digit before 2000; please contact Husqvarna for single digit clarification http://www.husqvarna.com/us/homeowner/support/customer-support/)
15 = week produced – March
00198 = 198th unit Husky produced that week

If you have more questions or need additional help please reply below and I will get back to you. Thank you for using FixYa and Good Luck. HTH
Lou

There are two idle screws one high, and one low. Your high adjustment idle screw needs to be adjusted.