THROTTLE STUCK
John Deere · JS46 Walk-Behind Mower 21 in.
Throttle lever won't move or engine doesn't respond to throttle changes. Causes: throttle cable binding or frayed, governor linkage stuck or disconnected, throttle plate in carburetor stuck (varnish buildup), cable routing pinched.
Error THROTTLE STUCK on the John Deere JS46 Walk-Behind Mower 21 in. means: Throttle Stuck or Unresponsive. The top-ranked community fix is “Replace Throttle Cable and Clean Carburetor Throttle Plate” (hard difficulty, ~90 min, DIY cost: $15-$30). 2 community-ranked fixes available below.
Published February 2026 · 2 fixes · push mower
Content is based on manufacturer service documentation, community repair experience, and OEM technical bulletins. Always verify with your owner's manual.Learn about our editorial standards.
While many push mower repairs can be done safely at home, consider hiring a qualified technician if:
Average professional repair cost for this issue: $140-$190.
Blade Won't Stop When Released
Grass Clumping Under Deck
Engine Stalls When Cutting
Engine Surges or Hunts
Excessive Oil Smoke
Fuel Leaking
Starter Cord Hard to Pull
Excessive Vibration
The John Deere JS46 Walk-Behind Mower 21 in. has 8 other known error codes:
Error code THROTTLE STUCK also appears on 1 other John Deere model:
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