YS Engine 120SR Carburetor Assembly for 120SR Engines - YSS3019S  [YSS3019S]

YS ENGINE CARBURETOR ASSEMBLY 120SR #S3019S
Price:
CAD$63.88
Brand:
YS Engine
Model:
YSS3019S
GTIN:
4560105743104
Condition:
Brand New
Write a review

Function and fitment overview

This is an RC-scale carburetor assembly supplied under the YS Engine part number YSS3019S and intended for use with the 120SR family as indicated in the product name. It is offered as a replacement component to restore correct fuel metering and idle control on compatible model engines and is not supplied as a complete engine or for non-RC applications.

The unit is a serviceable spare that mounts to the engine intake flange, connects to the throttle arm and linkage, and uses conventional mixture needles for tuning. When fitting, verify flange alignment, condition of gaskets or O-rings, and smooth throttle travel to prevent binding or intake leaks.

For tuning work, employ small incremental needle adjustments to set idle mixture and main-jet response, perform controlled run-in on a stand or in a safe field, and confirm behavior under load. This content focuses on fit and operational role rather than step-by-step procedures.

Specifications

  • Item Carburetor assembly
  • Material Unspecified
  • Model Number YSS3019S
  • Compatibility YS Engine 120SR series

As a spare part for RC-scale engines, the YS Engine YSS3019S carburetor assembly restores predictable fuel control and provides a stable platform for needle-based tuning; always confirm sealing and fit before running the engine.

Can this carburetor support high-rpm tuning for 120SR setups?

The assembly is intended to deliver standard fuel metering for the 120SR family. High-rpm tuning depends on correct jetting, ignition timing, and air intake; use progressive needle changes and verify performance under load rather than assuming improved top-end solely from the carb fitment.

What is a reasonable jetting starting point when using this carburetor?

Start with the engine's factory-recommended jets for the 120SR family if available, then make small main and idle needle adjustments while monitoring plug color and throttle response; establish a safe baseline on a stand before field runs.

Are the mixture needles standard thread types?

The assembly accepts conventional RC mixture needles used for needle-based tuning. Confirm thread and needle sizes against your existing setup before ordering replacement needles.

How should I maintain the carburetor between runs?

After each session, flush the carb with appropriate cleaner to remove residues, inspect seals and moving parts for wear, and store in a dry place. Routine cleaning helps preserve consistent needle response and idle control.

Copyright © 2008-2026 rcjaz.ca All rights reserved