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Tillotson Throttle Shaft Clip Screw (Small)
15C-19 Tillotson Throttle Shaft Clip Screw (Small)
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Tillotson Throttle Shaft Clip Screw (Small)

Part Number: 15C-19
Online Price: $0.99
15C-19 OEM Tillotson Throttle Shaft Clip Screw – Small Hole
Availability: In Stock.

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Description

15C-19 Tillotson OEM Throttle Shaft Clip Screw (Small Hole)


Secures Throttle Shaft Clip | Prevents Side Play | For Select HW, HB, HM, HX Models


The 15C-19 Tillotson Throttle Shaft Clip Screw is a genuine OEM fastener used to secure the throttle shaft clip (or bypass valve clip) to the carburetor body. This clip and screw combo prevents lateral movement of the throttle shaft, ensuring consistent throttle positioning and long-term performance.


This version of the screw is designed for clips with a smaller hole. Matching the correct clip and screw size is critical for proper fit and function.


Key Features:

  • OEM Tillotson Part #15C-19
  • Secures throttle shaft clip or bypass valve clip
  • Prevents throttle shaft from sliding side to side
  • Designed for clips with small hole diameter
  • Compatible with various HW, HB, HC, HM, and HX carburetors


Fitment Notice:

Check your clip size before ordering. This screw fits clips with a smaller hole. Using the wrong size may result in loose fitment or thread stripping.


Confirmed Fitment:

Compatible with the following Tillotson models:
HW-10A, B, HW-11A, B, HW-12A, HW-17A, HW-19A, HW-22A, HW-23A, HW-27A, HW-30A, HW-31A, HW-32A, HW-33A, HW-34A, HW-35A, HW-43A
HB-10A, HB-11A, HB-12A
HC-103A, HC-112A
HM-1A, HM-2A, HM-12A
HX-10A, HX-12A

Always consult your Tillotson carburetor parts diagram to verify correct screw and clip pairing.


Ideal For:

  • Throttle shaft service or rebuilds
  • Preventing throttle shaft side play
  • Maintaining carburetor performance and reliability
  • Use in vintage and racing small engine applications

FAQ

Q1: What does the 15C-19 Tillotson screw do?
A: It secures the throttle shaft clip (or bypass valve clip) to the carburetor body, preventing the throttle shaft from moving side to side during operation.


Q2: What’s the difference between this screw and others?
A: The 15C-19 is specifically designed for clips with a smaller hole. Tillotson uses different clip sizes depending on the carburetor model, so correct matching is essential.


Q3: Will this fit all Tillotson carburetors?
A: No. It only fits specific HW, HB, HC, HM, and HX series models. Always check your parts diagram or clip hole size before ordering.


Q4: What happens if I use the wrong size screw or clip?
A: Using the wrong screw may result in poor engagement, stripped threads, or a loose throttle shaft—causing erratic performance or throttle failure.


Q5: Can this be reused during a rebuild?
A: Only if the threads and head are in good condition. Replacing it during a rebuild is recommended to ensure secure fitment and avoid future issues.


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