RANSOTO Starter Motor for Honda GX340 GX390 GX420 11–16HP with Solenoid — 12V CCW, 14-Tooth

Compact 12V starter motor engineered to replace worn starters on Honda GX340, GX390 and GX420 engines, restoring reliable cranking for lawn, construction, and rental equipment.

This RANSOTO starter motor is a direct-fit aftermarket replacement designed for 11–16 HP Honda-based engines and compatible equipment from Afron, Allmand, Ditch Witch and others. Built with an aluminum-alloy housing, copper windings and a durable iron core, it delivers a 0.5 kW output with counterclockwise rotation and a 14-tooth pinion to engage the flywheel consistently. The unit includes a solenoid and matches many factory part numbers so you can swap it with minimal modification.

Will this starter work with my specific engine or machine?

If your equipment uses a Honda GX340, GX390 or GX420 (11–16 HP) or a listed Toro/TX-series item, this starter is designed to fit. It aligns with multiple OEM numbers commonly used across lawn care, light construction and rental gear.

• Compatible engines: Honda GX340, GX390, GX420 (11HP–16HP)
• Common equipment: Afron, Allmand, Ditch Witch, Toro TX-413 (2004–2008)
• Replaces these part numbers: 1280002750, 31210ZB80130, 31210ZE30130, DB5B6, SND0288 and more
• Includes solenoid for plug-and-play installation on matching mounts

How does the motor perform and what are the key technical details?

The RANSOTO starter is rated at 12 volts with counterclockwise rotation and a 14-tooth gear that meshes with the engine flywheel to produce reliable engagement. Its 0.5 kW power rating and copper-wound rotor provide consistent torque for cold or repeated starts.

• Voltage: 12 V for standard small-engine electrical systems
• Rotation: CCW (counterclockwise) — confirm engine flywheel direction
• Teeth: 14-tooth pinion for correct engagement
• Construction: aluminum-alloy shell, copper windings, iron core, carbon brushes

What signs indicate I should replace my starter?

Starter replacement is recommended when starting becomes unreliable or when abnormal noises and insufficient cranking power appear. Professional bench testing that shows failure to meet performance specs is also a clear indicator to swap the unit.

• Hard or slow cranking, or the engine failing to turn over
• Grinding, clicking, or excessively loud startup noises
• Intermittent starts or frequent need to retry ignition
• Professional test failure or visible wear on pinion and brushes

How simple is installation and what support is available?

For mechanics comfortable with small-engine electrical systems, the starter is a straightforward replacement: disconnect battery, remove old starter, fit the new unit and reconnect. The RANSOTO team offers after-sales assistance and a warranty for quality-related issues.

• Basic steps: isolate battery, remove fasteners, swap starter and reconnect
• Verify harness connectors match solenoid terminals before final fit
• Contact RANSOTO customer service for troubleshooting or warranty concerns
• Keep original part numbers handy to confirm cross-compatibility

Who is this for: This replacement starter suits technicians, fleet managers, rental-house staff and homeowners who maintain equipment powered by Honda GX340/GX390/GX420 engines or compatible machines. Choose this model when you need a robust, OEM-replacement style unit with known cross-reference compatibility and straightforward installation, backed by seller support for quality issues.