Self-Propel Belt Replacement & Quick Tune-Up -- 2 Year Old 21" Toro Recycler RWD Mower

My neighbor asked me to look at their 2022 Toro 21" Recycler (model 21321) Rear Wheel Drive mower with a 140cc EXi Briggs & Stratton because the self-propel wasn't working. Let's fix it and do a quick tune-up

Engine Numbers: 09P7020293F1

Replacement parts/non-generic tools shown (affiliate):

Square 2 Screwdriver Options (thinner handle the better for this)
Craftsman -- https://amzn.to/48bfvwO
Wera -- https://amzn.to/4f7xTJi

Square 2 Driver Bits (may have been easier to use these with socket/ratchet)
https://amzn.to/3zQECIH

Self-propel Belt -- Stens 265-354 / Toro 115-4669
Stens -- https://amzn.to/3BMBnT6
OEM Toro -- https://amzn.to/3YnVT5c

Air Filter (if yours is in worse shape) -- Briggs 593260 (Stens 102-851, Rotary 14364)
https://amzn.to/3U7bTpW

1/2" Drive Torque Wrench (if you prefer to torque the blade bolt)
https://amzn.to/3YaLHvK -- Craftsman equivalent to Kobalt shown in video


Toro, Recycler, verify issue, troubleshoot self-propel, remove blade, remove blade adapter, remove self-propel belt cover, remove self-propel cable, remove self-propel belt, remove self-propel pulley, install self propel belt, install belt guard, install self propel pulley, install belt cover, test self-propel, adjust self-propel, check air filter, clean air filter, check oil, change oil, discuss possible causes

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