As a follow-up, this might sound like a dumb question, but the unit came with 28 brand new 12" blades - yes, 12" and not the 16" that should be on the unit. Given the way the wedge works, is it OK to center the 12" blades and use them on the 16" drum - leaving 2" on each side that has no blade.
16" drum with 12" blades? Possible? Potential issues (vibration?)
Thanks
stop a minute and think. these are asplundh blades. held in by a tightened wedge. sharp enough to easily cut wood. turning at a very high rate of speed and you are there. now, do you really want to put the wrong blade in your chipper and run it up to 3500 RPM? still want to be standing there when one or more goes flying? they will easily shred the metal chute. any guesses what they will do to you?
Didn't think so. sell the 12" blades.
OK, now for changing them.
place ignition keys in your pocket.
remove the chute and flip foreward out of the way. unbolt the bottom 3 bolt at the chute/drum. flip this out of the way backwards.
you will see 5 allen head bolts on the 16" chipper. 4 are perfectly spaced and one is out of spacing. the spaced ones are long, and hold the wedge. the other is short. you remove this one and replace with a long bolt to push the wedge up. trust me here, a air compressor and impact wrench will be a big help.
repeat on all 4 blades. engage clutch when you get the bolts where you can work on them, take off and turn, then repeat.
take blades to machine shop for sharpening, there is a sponsor here who does that too, and would prob want your incorrect blades too
when you get your sharpened blades back, let us know.
surely someone will know about manuals. yours should be a '75-80 model if memory serves. don't forget to show us pics of it too!
-Ralph