STARTER MOTOR STARTING FOR YAMAHA WR250F YZ250F 20-25 B7B-81890-00 B7B-81890-01

Starter Motor for Yamaha

This replacement starter motor for Yamaha delivers powerful cranking torque to ensure reliable push-button ignition, referencing part numbers B7B-81890-00 and B7B-81890-01.

Overview

This heavy-duty starter motor for Yamaha replaces failing starter assemblies to guarantee prompt ignition in extreme riding conditions. Motocross and enduro riders rely on this starter motor for Yamaha to restart stalled engines quickly on demanding trails. Engineered to handle high starting loads, this starter motor for Yamaha features robust internal windings for reliable performance.

Built For Performance

• High-grade copper coils provide maximum conductivity and starter torque
• Advanced seals block dust, moisture, and engine oil from entering the motor
• Hardened armature shafts rotate smoothly on high-tolerance bearings
• Precisely machined mounting bracket matches the engine block mount pattern

Fits These Machines

• for Yamaha WR250F 2020-2025
• for Yamaha YZ250F 2020-2025

On-The-Job Use

• Restarting trail bikes quickly on steep hills or technical terrain
• Replacing slow-cranking or burned-out electric starters
• Overhauling starting systems before competitive racing seasons

Specs At A Glance

Good To Know

Q: What is the main cause of electric starter motor failure? A: Prolonged continuous cranking, water intrusion, or worn carbon brushes are typical failure points.

Q: Do I need to drain the engine oil to replace this starter? A: Depending on the bike tilt angle, a small amount of oil may drain, so placing a pan beneath the work area is recommended.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.