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Description
4223 020 9400 Deko Valve | Genuine STIHL OEM Replacement
The 4223 020 9400 Deko Valve is a genuine STIHL OEM replacement component used in the crankcase and cylinder assemblies of compatible STIHL cut-off saws. The decompression valve helps reduce cylinder compression during engine starting, making it easier to pull the starter and helping reduce starting effort.
Designed for select STIHL TS 400, TS 700, and TS 800 applications, this component is an important part of the engine's starting system.
Features That Make a Difference
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Genuine STIHL OEM replacement part
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Part Number: 4223 020 9400
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Alternate Part Number: 42230209400
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Product Type: Deko Valve / Decompression Valve
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Designed for compatible STIHL cut-off saw engines.
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Helps reduce cylinder pressure during starting.
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Supports easier and smoother engine starting.
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Designed to meet STIHL OEM specifications.
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Used in the crankcase or cylinder assembly depending on model.
Benefits
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Helps reduce starter-pull effort.
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Supports easier engine starting.
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Replaces a worn, damaged, or malfunctioning decompression valve.
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Helps restore the intended engine starting system.
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Genuine OEM construction provides proper fit and function.
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Ideal for engine repair and maintenance.
Specifications
| Specification | Details |
|---|---|
| Part Number | 4223 020 9400 |
| Alternate Part Number | 42230209400 |
| Product Type | Deko Valve / Decompression Valve |
| Brand | STIHL |
| Function | Cylinder Compression Relief During Starting |
| Applications | TS 400 / TS 700 / TS 800 |
| Assembly | Crankcase / Cylinder / Muffler |
| Use | Engine Repair / Replacement |
| Part Type | Genuine OEM Replacement |
Compatibility
The 4223 020 9400 Deko Valve is listed for:
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STIHL TS 400 — Crankcase
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STIHL TS 700 — Cylinder / Muffler
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STIHL TS 800 — Cylinder / Muffler
The exact installation location varies by model, so it is important to verify the applicable parts diagram before ordering.
Always verify your exact STIHL model, serial number, and original part number before ordering to ensure compatibility.
How the Deko Valve Works
A decompression valve temporarily releases some of the pressure from the combustion chamber during the starting process. This reduces the force required to rotate the engine and makes the starter easier to operate.
Once the engine starts and combustion begins, the valve closes so the engine can operate normally with full cylinder compression.
Why Replace the Deko Valve?
A damaged, dirty, or malfunctioning decompression valve can make the engine difficult to start and may increase starter effort.
Replacing it with the correct STIHL OEM component helps restore the intended decompression function and can make starting easier.
Why Buy from Barry’s Power Equipment?
Barry’s Power Equipment provides quality OEM and replacement parts for lawn, garden, and outdoor power equipment.
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Genuine OEM replacement parts
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Quality products for residential and commercial equipment
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Competitive Pricing
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Fast Shipping
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Expert Customer Support
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Reliable parts for professional equipment repair and maintenance
Restore the starting system of your compatible STIHL cut-off saw with the STIHL 4223 020 9400 Deko Valve, a genuine OEM replacement for select TS 400, TS 700, and TS 800 models.
