Probably need to replace the drive disks those things use. It's cheap to do so and if you've never done it, 3 years sounds about the right time. I think the hard start is something unrelated to worn drive disks.

I assume it has the "soft start" clutch, if so, be sure to get the replacement drive wheel with the liner inside.

Walt Conner

Not for everyone, but i have a 42" Snapper RER from late 80's. It had a soft clutch, always slipping. I disabled it. That liner in it, i had a roll of high temp black gasket material, almost 1/8" thick, i thought what the heck, ill try it, cut/made a new liner from that and put it in. In 2 years now it hasnt worn out.Sure the soft start is gone, but who cares..If ya know how to operate it, you can still start off pretty easy.

Also suggest not to overlook the possibility of a loose drive belt that may require adjustment or replacement. Problems of "smooth start" and lack of "pulling power" might be clues to a problem belt.

These Snapper RER's DO NOT have a drive belt to provide tractive power! The single belt on them is only to spin the mower blades!

"If ya know how to operate it, you can still start off pretty easy."

I guess I never learned how to operate one. I was a rebuilder and used Snapper RERs for years. I maintain they got their name because they snap your neck, even the "soft start" can lurch after backing up then going forward.

I have never seen a liner wear out before the rubber tire. Slipping is likely due to improper adjustment or weak spring.

Walt Conner

How do you determine if the disc is worn out?
If the rubber is gone I would think it would make
a metalic scream...

Never saw one with "the rubber gone". Have seen them worn pretty well down. Mostly the rubber chunks out.

Walt Conner