The user manuals may tell the consumer not to oil it, but service manuals for technicians are different things. Typically, if the machine does need lubrication, it's in areas they don't want you opening up. That's why most manufacturers recommend yearly servicing as they don't want just anyone with a screwdriver opening the guts of the machine and possibly ruining the electronic components and voiding the warranty. If you have no warranty and you feel comfortable with your husband doing this, then he should probably be able to narrow down the squeak.
If my squeak ever came back, I'd probably try to fix it myself too as my machine is now over 13 years old and also has no warranty left for that kind of issue.
Last edited by Candace; 07-06-2012 at 11:25 AM.