Need brushes for a Briggs & Stratton motor model 748001

Question edited for clarity.
Question moved from Pool and Spa.

https://www.houzz.com/discussions/1621539/senator-tiller

and also manuals do come up

https://www.google.com/search?q=Senator+tiller+model+140

and the Briggs & Stratton engine.

Briggs & Stratton 92500 Series Engine Parts

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Briggs & Stratton 92500 Series Engine Parts. We Sell Only Genuine Briggs and Stratton Parts. Find Part By Symptom ... 493880S. Search within model

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Try at Find Replacement Repair Parts for Briggs Stratton Engines
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Manuals - Briggs & Stratton

https://www.briggsandstratton.com/us/en/.../manuals
Briggs & StrattonFind Briggs & Stratton manuals online by selecting your lawn mower or product type &engine model number. Never worry about losing an owners manual ...

No wiring diagram available from Briggs. Try re-magnetizing the rotor. No AVR or Capacitor listed in the parts list.

Disconnect the wires to brushes ( pay attention to the order) and apply 12vdc to brushes. Positive goes to brush closest to the bearing. Start the generator and check for output. If output is normal run the unit a few minutes to ensure re-magnetization then shut down normally. After shut down disconnect the 12 vdc source and re-install the previous disconnected wires. Now re start the generator and test for output should be okay provide there is no problems with the alternator. If no output during the above re-magnetization then your rotor windings my burned out.

if there is thread locking compound on bolt or threads it must be removed, use a tap to clean the threads and a wire brush to clean the bolts. Use a thread locking compound (blue) when reassembling, torque the bolts to 30 ft. lbs. alternating bolt to bolt in 7-10 lb. increments. Recheck the torque after the engine has been ran up to op temp.

what do you mean by overheating make sure all the fins in engine are clean and free of debris and also the top of flywheel is clear as well it must be to keep it running cool

it can only b an engine if u ing hp

check youtube,guy on there has pics of spring set up,and still pics to follow the video.
check this name on youtube:4 HP Briggs & Stratton Quatro Motor Spring & Linkage Close Up Detail

go on internet and google briggs and stratton engine electrical schematics or manuals and usually u can download one for free