I use a 400 FTLB impact wrench with a socket on the blade bolt nut which is located on top of the spindle. The blade bolts are long and the front of the machine must be jacked up to provide enough clearance to remove the bolt from the spindle. I made up a long box wrench to reach the bolt head underneath the deck, and I use a torque wrench set at 75 FTLBs, and while holding the boxwrench on the bolthead I torque the nut.
You can download an operators manual for your Scag Turf Tiger at scag.com then click on manuals. Look for the machine serial number and write it down as you will need it to find the correct manuals.
Going to clean my Scag today, install new blades, and put it in storage. Already did oil changes, filter changes and lube. I had to replace the hourmeter as it was getting irratic. Scag has changed their hourmeter having had numerous complaints about them being difficult to read.
Mad Mackie in CT:biggrin::laughing: