If your going to look for something, Look for a different machine. A non running machine is only worth $20/$40. The problem is, if it's not running, you can't check anything else, like drivetrain. Most C/L sellers don't want you taking things apart to test anything. And what if you get it running? They say THANX, I'll keep it. OR, Thanx, I want $200 for a RUNNING machine. Best to offer $20 and take your chances. No easy answers, just my experiences....Good AND Bad. Some day's your the bug and some day's your the windshield.
if you decide ti get the 421 you can find hard rubber tires on ebay the tires can come from a 421 or 3521. the hard rubber tires can come from a 521 as long as it came with hard rubber tires, the pneumatic tires have a larger axle size so hrt to pneumatic is not a direct swap. I didn't look at the add but if its just the motor that's the problem you might want to put a predator 212 motor on it
1-toro2450E-38419. 1-toro3000E-38435. 1-toro 3650E-38445
1-.............,TORO XL 624..............
1-............, TORO XL 824..............
Well thanks everyone for all of your tips. I went and checked it out. Plug was fouled up, but I didn't try to hard to start it. The recoil spring was shot, and parts of the body were held on by zip ties. I probably could get it running, but it looked like a money pit - even if it was free. So I passed. Oh well! There will be other fixer upper 2 stage blowers!