I've had my 1425 for 10 years now and haven't had a single problem during that time. The only items I have replaced are the saw chains once they couldn't be sharpened anymore. Now, the safety button has fallen out and the line cord has pulled out of the back of the unit, so I'm ordering replacements for them and when I take it apart to install them, I'll give the inside housing a thorough cleaning. I would recommend this unit to a friend. I bought it at a military PX.