16620-Z8D-305 Thermowax Thermo Wax
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16620-Z8D-305 Thermowax Thermo Wax
Key Features
- Controls the engine's automatic choke system
- Actuates the choke plate based on engine temperature
- Ensures proper air-fuel mixture for cold starts and warm-up
- Manufactured to original equipment manufacturer (OEM) specifications
- Genuine Honda replacement part
Replaces / Cross-Reference Part Numbers
- 16620-Z8D-305
- 16620-Z8D-842
Compatibility & Fitment
- Fits specific Honda GCV160, GCV160LAO, and GCV190LA model engines
- Commonly used on lawn mowers and other small engine equipment
- Always verify fitment by checking your equipment's original part number
When to Replace
- Engine is difficult to start or will not start when cold
- Engine starts but immediately stalls
- Engine runs rich, smokes, or floods after warming up
- Visible damage or lack of movement in the choke actuator pin
Installation Tips
- Disconnect the spark plug wire before beginning any work
- Allow the engine to cool completely before handling parts
- Note the orientation and connection of linkages before removal
- Ensure the new unit is seated correctly and linkages are reconnected properly
- After installation, check for correct choke plate movement during a warm-up cycle
