Castair TCLI-48 — 48-Inch Cable Throttle Control with Head Unloader, 8–20 HP (Honda Engines)
The Castair TCLI-48 is a cable-type throttle control with a 48-inch cable length and an integrated head unloader, designed for Honda gas engines in the 8 to 20 HP range. This is the throttle control used on gasoline-powered portable and towable air compressors where you need both engine speed control and pump head unloading in a single cable assembly. The head unloader function is critical — without it, the engine restarts against full compression load, which strains both the engine and the pump at every start cycle.
The I in TCLI designates the unloader version. On pressure-switch-controlled gas engine compressors, when the tank reaches set pressure, the pressure switch signals the unloader to open the pump head while simultaneously throttling the engine back to idle. When pressure drops again, the engine throttles up and the unloader closes. This cycle extends engine life, reduces fuel consumption at idle, and keeps wear on the pump valves to a minimum. If your compressor runs on a Honda engine in this HP range and your cable is frayed, kinked, or the unloader mechanism is not functioning, the TCLI-48 is the correct replacement.
Key Features
- Cable Length: 48 inches — accommodates standard mounting distances between control panel and Honda engine throttle
- Head Unloader Included: Unloader assembly opens pump head when tank reaches pressure — prevents loaded starts
- Honda Engine Fitment: Designed for Honda GX-series and compatible engines in the 8–20 HP range
- HP Range: 8 to 20 HP — covers mid-range and large portable gas-engine compressors
- Combined Throttle + Unload Function: Single cable handles both engine speed control and pump head unloading
- Cast Air OEM Specification: Matched to Castair gas-engine compressor configurations using this cable routing length
Technical Specifications
- Part Number: TCLI-48
- Cable Length: 48 inches
- Type: Cable throttle control with head unloader
- Engine Compatibility: Honda gas engines, 8–20 HP
- Manufacturer: Cast Air (Castair)
- Price: 8.52
Note: If you need throttle control without the unloader function, see the TCLP-48. If your Honda engine is in the 5–6.5 HP range, see TCSP-H-5565-B.
When You Need This
- The throttle cable on your Honda-powered Cast Air compressor is frayed, kinked, or has lost spring tension
- The head unloader is not functioning — engine is starting under full compression load
- Rebuilding a gas-engine compressor and the original cable assembly is missing or damaged
- The engine surges or hunts when the compressor cycles — can indicate a worn or stiff throttle cable
Why Buy From OEM Diagnostic Tools?
We carry the Cast Air throttle control lineup and can help confirm the TCLI-48 is correct for your specific compressor and Honda engine model. Free shipping, phone support at 866-217-0063, full manufacturer warranty.
Call 866-217-0063 for quick answers and help!
