Air cleaner cartridge (pleated paper)
Likely- 593260 — Toro 20340 (serial 400000000 and higher) — engine confirmed as Briggs & Stratton 675EXi on Toro's own product specification page
Manufacturer chain: Toro's own product page states this model ships with the 675EXi engine (Engine Brand: Briggs and Stratton. Engine: Briggs & Stratton 675EXi. Engine Displacement (cc): 163 cc.). That engine's air filter was independently verified against a Briggs & Stratton parts diagram in an earlier batch — see that engine's own catalog row for the diagram citation.
Source: Toro product specification page — Toro 20340 — Specifications: Engine Brand: Briggs and Stratton. Engine: Briggs & Stratton 675EXi. Engine Displacement (cc): 163 cc.
Changed partway through production: Applies to serial numbers 400000000 and higher, which is the modern EXi-generation range Toro's own spec page and third-party catalogues agree on. Toro has also sold this model number with older serials (some as low as the 290000000s); those are a different, earlier engine generation and are NOT covered by this record.
Blade driver (adapter)
Likely- 106-3987 — Toro 20340 22" Recycler Walk-Behind Mower with SmartStow (SN 401500000–404329999)
The driver takes the shock of a blade strike so the crankshaft does not, so inspect it whenever the machine has hit something. The blade support (108-3766-03) and driver spacer (106-3999) sit with it on the same diagram.
Source: PartsTree OEM parts diagram — Toro 20340 Engine and Blade Assembly — Engine and Blade Assembly, Ref 13: DRIVER-BLADE — 106-3987. Ref 15 SUPPORT-BLADE — 108-3766-03; Ref 12 SPACER-DRIVER — 106-3999.
Changed partway through production: Covers SN 401500000 through 404329999; Toro reuses this model number across other serial ranges.
Blade, 22 inch
Likely- 131-4547-03 — Toro 20340 22" Recycler Walk-Behind Mower with SmartStow (SN 401500000–404329999)
Fit the blade with the cutting edges and raised lift wings facing the deck, and torque the bolt (125-2466) to the manual figure. Toro also publishes retail-pack blade SKUs such as 59534P; those are packaged differently from this service number and we have not confirmed they are the same blade, so match against the one you remove.
Source: PartsTree OEM parts diagram — Toro 20340 Engine and Blade Assembly — Engine and Blade Assembly, Ref 14: BLADE-22 INCH — 131-4547-03. Blade bolt at Ref 17: BOLT-BLADE — 125-2466.
Changed partway through production: Toro lists this model across several serial ranges and the parts can differ between them; this row covers SN 401500000 through 404329999.
Carburetor
Likely- 594058 — Toro 20340 (serial 400000000 and higher) — engine confirmed as Briggs & Stratton 675EXi on Toro's own product specification page
Manufacturer chain: Toro's own product page states this model ships with the 675EXi engine (Engine Brand: Briggs and Stratton. Engine: Briggs & Stratton 675EXi. Engine Displacement (cc): 163 cc.). That engine's carburetor complete was independently verified against a Briggs & Stratton parts diagram in an earlier batch — see that engine's own catalog row for the diagram citation.
Source: Toro product specification page — Toro 20340 — Specifications: Engine Brand: Briggs and Stratton. Engine: Briggs & Stratton 675EXi. Engine Displacement (cc): 163 cc.
Changed partway through production: Applies to serial numbers 400000000 and higher, which is the modern EXi-generation range Toro's own spec page and third-party catalogues agree on. Toro has also sold this model number with older serials (some as low as the 290000000s); those are a different, earlier engine generation and are NOT covered by this record.
Carburetor overhaul kit (later code dates)
Likely- 594636 — Toro 20340 (serial 400000000 and higher) — engine confirmed as Briggs & Stratton 675EXi on Toro's own product specification page
Manufacturer chain: Toro's own product page states this model ships with the 675EXi engine (Engine Brand: Briggs and Stratton. Engine: Briggs & Stratton 675EXi. Engine Displacement (cc): 163 cc.). That engine's carburetor rebuild kit was independently verified against a Briggs & Stratton parts diagram in an earlier batch — see that engine's own catalog row for the diagram citation. For engines with a code date after 15030800.
Source: Toro product specification page — Toro 20340 — Specifications: Engine Brand: Briggs and Stratton. Engine: Briggs & Stratton 675EXi. Engine Displacement (cc): 163 cc. - 590589 — Toro 20340 (serial 400000000 and higher) — engine confirmed as Briggs & Stratton 675EXi on Toro's own product specification page
Manufacturer chain: Toro's own product page states this model ships with the 675EXi engine (Engine Brand: Briggs and Stratton. Engine: Briggs & Stratton 675EXi. Engine Displacement (cc): 163 cc.). That engine's carburetor rebuild kit was independently verified against a Briggs & Stratton parts diagram in an earlier batch — see that engine's own catalog row for the diagram citation. For engines with a code date before 15030900.
Source: Toro product specification page — Toro 20340 — Specifications: Engine Brand: Briggs and Stratton. Engine: Briggs & Stratton 675EXi. Engine Displacement (cc): 163 cc.
This model was built with more than one part here — check your serial number or engine TYPE against the options below before ordering.
Cylinder head gasket
Likely- 592358 — Toro 20340 (serial 400000000 and higher) — engine confirmed as Briggs & Stratton 675EXi on Toro's own product specification page
Manufacturer chain: Toro's own product page states this model ships with the 675EXi engine (Engine Brand: Briggs and Stratton. Engine: Briggs & Stratton 675EXi. Engine Displacement (cc): 163 cc.). That engine's head gasket was independently verified against a Briggs & Stratton parts diagram in an earlier batch — see that engine's own catalog row for the diagram citation.
Source: Toro product specification page — Toro 20340 — Specifications: Engine Brand: Briggs and Stratton. Engine: Briggs & Stratton 675EXi. Engine Displacement (cc): 163 cc.
Changed partway through production: Applies to serial numbers 400000000 and higher, which is the modern EXi-generation range Toro's own spec page and third-party catalogues agree on. Toro has also sold this model number with older serials (some as low as the 290000000s); those are a different, earlier engine generation and are NOT covered by this record.
Ignition coil (magneto armature)
Likely- 595009 — Toro 20340 (serial 400000000 and higher) — engine confirmed as Briggs & Stratton 675EXi on Toro's own product specification page
Manufacturer chain: Toro's own product page states this model ships with the 675EXi engine (Engine Brand: Briggs and Stratton. Engine: Briggs & Stratton 675EXi. Engine Displacement (cc): 163 cc.). That engine's ignition coil was independently verified against a Briggs & Stratton parts diagram in an earlier batch — see that engine's own catalog row for the diagram citation.
Source: Toro product specification page — Toro 20340 — Specifications: Engine Brand: Briggs and Stratton. Engine: Briggs & Stratton 675EXi. Engine Displacement (cc): 163 cc.
Changed partway through production: Applies to serial numbers 400000000 and higher, which is the modern EXi-generation range Toro's own spec page and third-party catalogues agree on. Toro has also sold this model number with older serials (some as low as the 290000000s); those are a different, earlier engine generation and are NOT covered by this record.
Rewind (recoil) starter assembly
Likely- 594062 — Toro 20340 (serial 400000000 and higher) — engine confirmed as Briggs & Stratton 675EXi on Toro's own product specification page
Manufacturer chain: Toro's own product page states this model ships with the 675EXi engine (Engine Brand: Briggs and Stratton. Engine: Briggs & Stratton 675EXi. Engine Displacement (cc): 163 cc.). That engine's recoil starter was independently verified against a Briggs & Stratton parts diagram in an earlier batch — see that engine's own catalog row for the diagram citation.
Source: Toro product specification page — Toro 20340 — Specifications: Engine Brand: Briggs and Stratton. Engine: Briggs & Stratton 675EXi. Engine Displacement (cc): 163 cc.
Changed partway through production: Applies to serial numbers 400000000 and higher, which is the modern EXi-generation range Toro's own spec page and third-party catalogues agree on. Toro has also sold this model number with older serials (some as low as the 290000000s); those are a different, earlier engine generation and are NOT covered by this record.
Rocker cover gasket
Likely- 595342 — Toro 20340 (serial 400000000 and higher) — engine confirmed as Briggs & Stratton 675EXi on Toro's own product specification page
Manufacturer chain: Toro's own product page states this model ships with the 675EXi engine (Engine Brand: Briggs and Stratton. Engine: Briggs & Stratton 675EXi. Engine Displacement (cc): 163 cc.). That engine's valve cover gasket was independently verified against a Briggs & Stratton parts diagram in an earlier batch — see that engine's own catalog row for the diagram citation.
Source: Toro product specification page — Toro 20340 — Specifications: Engine Brand: Briggs and Stratton. Engine: Briggs & Stratton 675EXi. Engine Displacement (cc): 163 cc.
Changed partway through production: Applies to serial numbers 400000000 and higher, which is the modern EXi-generation range Toro's own spec page and third-party catalogues agree on. Toro has also sold this model number with older serials (some as low as the 290000000s); those are a different, earlier engine generation and are NOT covered by this record.
Spark plug (resistor)
Likely- 491055S — Toro 20340 (serial 400000000 and higher) — engine confirmed as Briggs & Stratton 675EXi on Toro's own product specification page
Manufacturer chain: Toro's own product page states this model ships with the 675EXi engine (Engine Brand: Briggs and Stratton. Engine: Briggs & Stratton 675EXi. Engine Displacement (cc): 163 cc.). That engine's spark plug was independently verified against a Briggs & Stratton parts diagram in an earlier batch — see that engine's own catalog row for the diagram citation.
Source: Toro product specification page — Toro 20340 — Specifications: Engine Brand: Briggs and Stratton. Engine: Briggs & Stratton 675EXi. Engine Displacement (cc): 163 cc.
Changed partway through production: Applies to serial numbers 400000000 and higher, which is the modern EXi-generation range Toro's own spec page and third-party catalogues agree on. Toro has also sold this model number with older serials (some as low as the 290000000s); those are a different, earlier engine generation and are NOT covered by this record.
Not sure which of these your problem needs?
Run the guided diagnosis first — it tests your actual symptom and tells you exactly which part above applies, or whether the fault is somewhere else entirely.
Start free diagnosis