Fuel Solenoid Valve for Mt50 Mt52 Mt55 Models

Q1: What is the product identification and applicable scope of the fuel solenoid valve for Mt50/Mt52/Mt55 models?

• Core product models:
  • OEM-specific: 129953-77800 (12V for Mt50/Mt52) and 16271-60010 (24V for Mt55 heavy-duty variant);
  • Universal replacement: 1503ES-12S5SUC12S (12V) and 1503ES-24S5SUC24S (24V), fully matching the fuel system interfaces of Mt50/Mt52/Mt55.
• Applicable scope:
  • Mt50: Light-duty garden/agricultural equipment (e.g., small tillers, lawn mowers) with 5HP single-cylinder diesel engines, used for household or small-scale farmland maintenance;
  • Mt52: Medium-duty compact machinery (e.g., micro excavators, small loaders) with 7HP dual-cylinder diesel engines, deployed in residential construction auxiliary work and orchard management;
  • Mt55: Heavy-duty compact equipment (e.g., small generators, mini tractors) with 10HP multi-cylinder diesel engines, targeted for small-scale construction power supply and farmland plowing.

Q2: What core functions does the fuel solenoid valve perform for Mt50/Mt52/Mt55 models?

Core Functions (All Models)

• Precise fuel supply control:
  • For 12V Mt50/Mt52: When the ignition is turned on, the solenoid coil energizes to pull the valve core open, allowing diesel to flow into the engine’s carburetor/injection pump; when powered off, the internal spring resets the valve core to cut off fuel supply, realizing quick engine shutdown (response time ≤1.5s).
  • For 24V Mt55: Delivers higher pull force to match the multi-cylinder engine’s fuel demand, ensuring stable fuel flow during continuous generator operation or heavy-load tractor work.
• Engine safety protection: Prevents engine runaway (post-shutdown idling) caused by incomplete fuel cutoff, and avoids hard shutdown-related mechanical wear for Mt50/Mt52/Mt55’s small-displacement engines; for Mt55 generators, it also prevents fuel overflow during long-term standby.
• Low-voltage adaptation: The 12V version supports a wide voltage range (9–15V) and the 24V version (20–28V), adapting to the unstable power supply of Mt-series equipment’s on-board batteries during low-charge or high-load conditions, with no functional failure due to voltage fluctuations.
• ECM signal feedback (for Mt55): Transmits startup/shutdown status signals to the engine’s small electronic control module (ECM), enabling real-time fault monitoring and triggering diagnostic codes (e.g., coil open circuit) for quick troubleshooting.

Model-Specific Optimizations

• Mt50/Mt52: The 129953-77800 valve features a compact design (35×50mm) to fit the limited engine bay space of mini garden/construction equipment;
• Mt55: The 16271-60010 valve has enhanced vibration resistance (≤15g, 10–2000Hz) to withstand the tractor’s off-road operation jolts or generator’s running vibration.

Q3: What are the key technical parameters of the fuel solenoid valve for Mt50/Mt52/Mt55?