How do I remove the input selector knob from a Yamaha CR-440 Stereo Receiver? All the other knobs - bass, treble, loudness, etc. - can just be pulled off, but according to some restoration videos on YouTube, the input selector knob requires an allen wrench to remove. None of the material that I've seen online shows explicitly where to use the allen wrench. YAMAHA CR-840 SERVICE manual original repair book stereo amp amplifier - $32.50. Shipped in a new a mailer. Up for bid.. Original Printed Factory Manual. Picture of actual manual. Very good used Condition. May have technician notes written inside. Manual is from our family TV and radio repair shop that closed in the early 90's. Yamaha CR-440 AM/FM Stereo Receiver, 'Natural Sound Series' + pdf file of Owner's Manual/ Operating Instructions + Schematics (pdf) + Service Manual (pdf) + 20 feet of good quality 14-gauge speaker wire + decent pair of interconnects. Asking $80 Best said by one owner, "Modest power, but great looks and good sound. Yamaha CR-440: Specifications, Pictures, Reviews, Comparison, Information. If you own this product and would like to post your pictures on this site, please contact the webmaster Vintage Yamaha CR 440 .? Hide sidebar Show sidebar . Thread starter Greg Parker; Start date Mar 20, you can download a user manual. G. Greg Parker If you are not used to service then you are not likely to be able to repair this unit. Yamaha Repair Manuals Download a repair manual straight to your computer, tablet or smart phone in seconds. Yamaha Repair Manuals. Download a repair manual straight to your computer, tablet or smart phone in seconds. All manuals are in pdf format for quick easy download. No special software Yamaha Cr-2040 Owners Manual View and Download Yamaha CR-600 service manual online. CR-600 Stereo Receiver pdf Stereo View and Download Yamaha CR-440 service manual online. CR-440 Stereo Receiver pdf Stereo Receiver Yamaha CR-2040 Owner's Manual. (26 pages). 2011-12-30 09:50