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Sounds like you got it going well, Mike. Glad I could help. Have a good one and stay safe!

Yes. I wouldn't have used the word "simply" to describe it because of how far under the shroud you have to reach, so the only safe way to do this is while the engine isn't running.

The wheel cover on my S21ZSN will not stay against the rear wheel. With a lot of force you can make it snap into the wheel, but as soon as the wheel turns, the cover pops out except where the drive pinion washer holds it in. This makes the opposite side open about 1/4". I cleaned the areas...

Yup, you're over 3000 RPM. What RPM are you trying to get? Should be between 2400 and 3200 RPM at max throttle. Maybe you should adjust at your 6000 peg so you know you're not running too fast.

Waynieboy: This thread of mine is old, but appears to be useful for people with self-propelled drive issues. I actually still have an issue that perhaps you are seeing, too... I can't get the wheel covers to stay against the wheel. They kind of snap-in, but come right out of their grooves as...

Lotsa people do. Sometimes I do, sometimes I hook up my old, old car tuneup meter to it, power it up with an external battery, and divide the indicated RPM by 2 (2-stroke vs 4-stroke). Lots a trouble, not much worth. : ) BTW, I have a new S21ZSN, the self-propelled version of your mower, I...

A very old local dealer is going out of business. He was a Lawn Boy dealer up until about 1992 or so. Don't get too excited, he doesn't have a big stock of NOS Lawn Boys :shocked:. He only has two NOS left and neither is complete, one doesn't even have an engine. I bought his last new R7271...

My S21ZSN would not pull itself, but was kinda hard to push or pull backwards. When I lifted the rear the wheels would turn, but as soon as I set it down they would stop. I read the other thread about this, which gave me the right start on the problem. I took the bottom of the drive case off...