SMI12A40 Starter – Compatible with JOHN.D & ONAN Engines Models SMT0153 17332 191-0734

Product Overview

LSDF SMI12A40 – 12V 1.0KW 9T CCW (Counter-Clockwise) Starter — A high‑quality aftermarket compatible replacement Starter, engineered for JOHN.D JD24A and other lawn/garden tractors powered by Onan series engines (23HP, 25HP, Continental 36HP Gas, and related engines) from the 1970s‑1990s. This product delivers reliable starting power and is manufactured to meet industry‑standard specifications for fit and function. It serves as an aftermarket compatible replacement for numerous OEM part numbers, making it an ideal choice for small engine maintenance and repair.

Product Model

Cross‑Reference Codes (For Compatibility Comparison)

All third‑party brand names and part numbers are for cross‑reference purposes only and do not imply affiliation or endorsement. LSDF is our own brand; all other manufacturer names and numbers are the property of their respective owners.

Design Features & Performance Advantages

• Compact and Reliable for Onan Engines: Utilizes a 1.0KW motor with 9T drive gear and CCW (Counter-Clockwise) rotation, specifically designed for Onan series engines (23HP, 25HP, Continental 36HP Gas) in lawn and garden equipment. The precision‑cut gear teeth ensure reliable engagement and reduced wear.
• Precision Engineering for Aftermarket Compatible Replacement: Manufactured with exacting tolerances, this Starter is designed to match the mounting and electrical specifications of the corresponding original equipment–style components. It provides a straightforward, bolt‑on installation without modification — a hassle‑free solution for equipment maintenance professionals and DIY users alike.
• Premium Materials for Extended Durability: The motor incorporates high‑purity copper windings and Class F insulation, offering excellent heat resistance and preventing failure under frequent start‑stop cycles. Durable graphite brushes and a corrosion‑resistant aluminum alloy housing ensure long service life, even in demanding outdoor and dusty conditions. A high‑quality one‑way clutch protects the Starter from flywheel back‑drive damage.
• Versatile Application Coverage: This Starter is intended for use on JOHN.D JD24A and other equipment with Onan engines, helping to reduce inventory complexity for dealers and workshops.

Quality & Application Information

Our Starters undergo rigorous factory testing, including no‑load performance, load torque, locked‑rotor, and dielectric strength tests, to ensure consistent quality and reliability. We comply with international standards for aftermarket lawn and garden equipment components.

Application Scenarios: This Starter is an ideal compatible replacement for JOHN.D JD24A and other tractors using Onan 23HP, 25HP, Continental 36HP Gas, and related engines (1970s‑1990s). It is commonly used in small engine repair shops, dealerships, and for DIY maintenance.