66T-81800-04 Aftermarket Yamaha Starter Motor | Sawley's Select Marine Parts

🔧 Product Description

Aftermarket replacement Yamaha 40X/E40X Two-Stroke Starter Motor - Replaces Part Number: 66T-81800-04

New aftermarket permanent-magnet direct-drive starter replacing Yamaha 66T-81800-04 for 40HP 40X and Enduro E40X two-stroke outboards.

⚙️ Key Features

• 12-volt electrical system

• Counter-clockwise rotation viewed from the drive end

• 9-tooth pinion with approximately 29mm drive gear

• Permanent-magnet direct-drive construction

• Yamaha-pattern starter also used on compatible Parsun/Hidea 40HP two-strokes

• Complete new starter motor with integrated solenoid

• Marine or engine-grade corrosion-resistant construction

• Direct replacement only after voltage, rotation, tooth count and mounting pattern are confirmed

🧰 Kit / Assembly Contents

• 1 × Complete starter motor assembly - P/N 66T-81800-04

• 1 × Integrated starter solenoid and shift mechanism

• 1 × Installed pinion gear and overrunning clutch/Bendix assembly

• 1 × Installed armature, brush holder, field-magnet/winding and drive housing

• Mounting bolts, battery cables, relays and external wiring are transferred or renewed separately unless supplied

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 66T-81800-04 → Supersedes/cross-references 66T-81800-00, -01, -02 and -03

OEM / Related Numbers:

• 66T-81800-00

• 66T-81800-01

• 66T-81800-02

• 66T-81800-03

• 66T-81800-04

• Hitachi S114-815

• S114-815A

Aftermarket / Verified Equivalents:

• WAI/Lester: 10897 / 5008 application family

• Arrowhead: SAB0132 / 410-21103

• Recmar: REC66T-81800-04

🚤 Compatibility

Commonly used on:

• Yamaha, Parsun and compatible Yamaha-pattern two-stroke starting systems

Typically suits:

• Engine / Component models:

• Yamaha 40X M/W/T HS/L, principally 1998-2006

• Yamaha Enduro E40X, principally 1998 and 2001-2002

• Compatible Parsun/Hidea T40-series two-strokes after exact mounting confirmation

• HP Range: 40HP

• Year Range: Principally 1998 - 2006

• Component Identification: Confirm 12V, 9 teeth, CCW rotation and 66T mounting pattern.

🔌 Function

The starter motor converts battery electrical energy into high-torque mechanical rotation to crank the engine. When the start circuit energises the solenoid, the pinion moves into the flywheel ring gear and the motor turns the crankshaft until combustion begins. The overrunning clutch then protects the starter as engine speed rises.

Common signs of failure / service requirement:

• No-crank condition even though the battery and start-control circuit test correctly

• Solenoid clicks but the starter motor does not rotate

• Starter turns slowly, draws excessive current or overheats the battery cables

• Pinion spins without engaging the flywheel ring gear

• Grinding, clashing or repeated pinion kick-out during cranking

• Intermittent cranking caused by worn brushes, solenoid contacts or heat soak

• Corrosion, water intrusion, burnt windings or excessive shaft/bearing play

📦 Condition

• New aftermarket replacement starter motor

• Brand new

• Supplied in original or equivalent packaging