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Tillotson Inlet Control Lever Fulcrum Screw
15B-329 Tillotson Inlet Control Lever Fulcrum Screw
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Tillotson Inlet Control Lever Fulcrum Screw

Part Number: 15B-329
Online Price: $0.99
15B-329 OEM Tillotson Inlet Control Lever Fulcrum Screw
Availability: In Stock.

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Description

15B-329 Tillotson Inlet Control Lever Fulcrum Screw – OEM


Secures Fulcrum Arm for Inlet Needle Control | Fits HL, HR, HW, HX, HM & HD Series Carburetors

The 15B-329 Tillotson OEM Inlet Control Lever Fulcrum Screw is a critical component in the carburetor's fuel metering system. This screw securely fastens the fulcrum arm pin, which holds the inlet control lever (fulcrum arm) in place — allowing it to pivot as it opens and closes the inlet needle to regulate fuel flow.

Whether you're rebuilding your carburetor or replacing stripped or damaged screws, this OEM replacement ensures proper fuel delivery and consistent metering performance.


Key Features:

  • OEM Part #: 15B-329
  • Holds the inlet control lever pin securely in place
  • Maintains consistent control of the inlet needle and seat
  • Essential for precise fuel metering
  • Compatible with a wide range of Tillotson 2-cycle and 4-cycle carburetors
  • High-quality steel construction for durability


Carburetor Compatibility:

The 15B-329 Fulcrum Screw fits nearly all Tillotson HL, HR, HW, HX, HM, and HD model carburetors, including but not limited to:

HL Series:
HL-1A, HL-129E, HL-132H, HL-166B/C, HL-189F, HL-227A/E, HL-229A, HL-232A/E, HL-250A/B/C/D/E, HL-274E, HL-292G, HL-293A/F, HL-299E, HL-304E, HL-304WX/WXA/WXG, HL-306A, HL-314E/F/G, HL-324A, HL-334A/AA/AB/B/WX, HL-339A, HL-341A, HL-342A, HL-348A/B/C/D/E, HL-352A, HL-355A/B/C/D/E, HL-357A/B, HL-360A/B/C, HL-365A/B, HL-366A, HL-368A, HL-371A, HL-374A, HL-380A/B, HL-383A, HL-384A/B, HL-385A, HL-388A, HL-395A

HR Series:
HR-181B, HR-184A, HR-190A, HR-191C/G, HR-196A

Also Fits:
HW-Series, HX-Series, HM-Series, and most HD-Series carburetors.

If you're unsure about compatibility, check your carburetor's parts diagram or contact us for assistance.


Why Replace This Screw?

  • Prevents fuel metering inconsistencies
  • Avoids fulcrum arm misalignment
  • Critical in any carburetor rebuild or tuning process
  • Easily lost during disassembly — always good to have spares


Ideal For:

  • Racing engine carburetor rebuilds
  • Vintage and modern Tillotson carburetor maintenance
  • Replacing worn, stripped, or lost screws
  • Ensuring accurate fuel flow for high-performance tuning

FAQ

Q1: What does the 15B-329 Tillotson Fulcrum Screw do?
A: It secures the inlet control lever pin (or fulcrum pin) in place, allowing the lever to pivot properly and control the inlet needle for accurate fuel delivery.


Q2: Is this screw required for carburetor operation?
A: Yes. Without this screw, the fulcrum lever will not stay in position, leading to inconsistent fuel metering or total carburetor failure.


Q3: Which carburetors is this screw compatible with?
A: It fits most Tillotson HL, HR, HW, HX, HM, and HD series carburetors, including popular models like HL-304WX, HR-191G, HW-30A, and many more.


Q4: Should I replace this screw during a rebuild?
A: If the original screw is worn, corroded, or stripped, yes. It's a critical part of the metering system and should be replaced to maintain performance.


Q5: Can I reuse the original fulcrum screw?
A: You can, if it's in good condition. However, due to its small size and frequent loss or wear, it’s often best to install a new OEM replacement like the 15B-329.

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