[Lifetime Warranty] 4SV-81940-12-00 Starter Solenoid Relay Yamaha YFM 350
Starter solenoid relay for Yamaha YFM 350 with two metal terminal bolts and two green fuses.
Dimensional diagram of 4SV-81940-12-00 starter solenoid relay for Yamaha YFM 350 showing product measurements.
Close-up detail views of 4SV-81940-12-00 starter solenoid relay components including housing, 30A fuse, and copper coil.
4SV-81940-12-00 starter solenoid relay kit for Yamaha YFM 350 with extra screws and fuse covers.
Infographic showing wide application of 4SV-81940-12-00 starter solenoid relay for ATVs, UTVs, and motorcycles.
Wiring diagram for Yamaha YFM 350 starter solenoid relay showing connections to ignition, start switch, and motor.
4SV-81940-12-00 starter solenoid relay for Yamaha YFM 350 shown in a lifestyle graphic.
Starter solenoid relay for Yamaha YFM 350 with two metal terminal bolts and two green fuses.
Dimensional diagram of 4SV-81940-12-00 starter solenoid relay for Yamaha YFM 350 showing product measurements.
Close-up detail views of 4SV-81940-12-00 starter solenoid relay components including housing, 30A fuse, and copper coil.
4SV-81940-12-00 starter solenoid relay kit for Yamaha YFM 350 with extra screws and fuse covers.
Infographic showing wide application of 4SV-81940-12-00 starter solenoid relay for ATVs, UTVs, and motorcycles.
Wiring diagram for Yamaha YFM 350 starter solenoid relay showing connections to ignition, start switch, and motor.
4SV-81940-12-00 starter solenoid relay for Yamaha YFM 350 shown in a lifestyle graphic.
Lifetime Warranty

[Lifetime Warranty] 4SV-81940-12-00 Starter Solenoid Relay Yamaha YFM 350

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4SV-81940-12-00 Starter Solenoid Relay Yamaha YFM 350

Key Features

  • Direct-fit replacement component for seamless installation.
  • Engineered to meet or exceed original equipment (OEM) specifications.
  • Restores reliable electrical current to the starter motor.
  • Constructed for durability and long service life in demanding conditions.

Replaces / Cross-Reference Part Numbers

  • Yamaha: 4SV-81940-12-00
  • Yamaha: 4SV-81940-00-00

Compatibility & Fitment

  • Fits a wide range of Yamaha ATV, motorcycle, and powersport models.
  • Confirmed fitment for various YFM 350 models including Raptor, Bruin, and Grizzly.
  • Also compatible with select Yamaha Kodiak, VMAX, and FZ6R models.
  • Note: Verify the part number against your vehicle's service manual to ensure proper fitment.

When to Replace

  • A single, loud click is heard when pressing the start button, but the engine does not crank.
  • The starter motor fails to engage intermittently.
  • No sound or action occurs when attempting to start the vehicle.
  • The starter motor continues to run after the start button is released.

Installation Tips

  • Always disconnect the vehicle's battery before beginning installation.
  • Photograph or label the wiring connections to the old solenoid before removal.
  • Ensure all cable terminals and connection points are clean and free of corrosion.
  • Securely tighten all nuts and electrical connections to prevent voltage loss.
Product image 1
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  • Fixing Symptoms

    Fixing Symptoms

    Hard to start the engine | Clicking sound but no cranking | Slow or weak cranking of the starter motor | Intermittent operation, etc
  • Premium Quality

    Premium Quality

    Made of high-grade materials and fine craftsmanship to provide exceptional durability for long-time use
  • Saving Solution

    Saving Solution

    Enjoy our great-value package with all you need to optimize electrical systems - BlueStars brings DIY solutions to help you deal with any trouble
  • Simple Installation

    Simple Installation

    Please do not remove the inner nuts. When screwing on the outer nuts, use a wrench to hold the inner nut to keep it tight.
WIDE APPLICATION

WIDE APPLICATION

Widely used for automotive applications
WORK LIKE A CHARM

WORK LIKE A CHARM

Durable ABS Plastic housing and strong Copper inner coil & contact ensure your solenoid operates safely in any harsh environment and can withstand high current
EXCEPTIONAL PARTS, REMARKABLE JOURNEY

EXCEPTIONAL PARTS, REMARKABLE JOURNEY

Enjoy your seamless journey with the support of our replacement parts.
Brand Model Number
Yamaha BIG BEAR Big Bear YFM400 4x4 2006 2009; Big Bear YFM400 2007 2008; Big Bear YFM400 4WD 2010-2012
Yamaha BRUIN Bruin YFM350 2WD 2006; Bruin YFM350 4WD 2006
Yamaha GRIZZLY Grizzly YFM660 4x4 2006-2008; Grizzly YFM350 2007 2008; Grizzly YFM450 2007; Grizzly YFM450 4WD 2008-2013; Grizzly YFM350 4x4 2009; Grizzly YFM350 2WD 2010-2011; Grizzly YFM350 4WD 2010-2013; Grizzly YFM450 EPS 4WD 2011-2013
Yamaha KODIAK Kodiak YFM400 4WD 2006; Kodiak YFM400 4x4 2006; Kodiak YFM450 4WD 2006
Yamaha WOLVERINE Wolverine YFM450 4x4 SPORT 2006; Wolverine YFM450 2007; Wolverine YFM450 4WD 2008 2010 2011; Wolverine YFM450 4x4 AUTO 2009

FAQ

This solenoid is compatible with a wide range of Yamaha ATVs and motorcycles, including the YFM 350, 400, 450, and 660 series. Specific models include the Raptor, Grizzly, Kodiak, Wolverine, Big Bear, Bruin, TTR90/125/230, BT1100 Bulldog, FZR 600, MT-03, and TDM 850.
This unit replaces OEM part numbers 4SV-81940-12-00, 4SV-81940-00-00, 4SV-81940-11-00, and 4XE-81940-12-00.
If you turn the key or press the start button and hear a single 'click' sound without the engine cranking, or if you hear a rapid 'chattering' noise, the solenoid is likely failing to engage the starter motor. Other signs include intermittent starting issues or a complete lack of response when attempting to start the engine, even when the battery is fully charged.
Installation is generally straightforward and can typically be completed in 15 to 30 minutes. You will need basic hand tools, such as a screwdriver and a socket set, to remove the battery cover and disconnect the old unit. Always disconnect the negative battery terminal before beginning to prevent accidental shorting.
If the engine still fails to crank after installing the new solenoid, check your battery voltage under load, inspect the starter motor itself, and ensure all ground connections are clean and tight. Additionally, verify that the safety interlocks—such as the neutral safety switch or clutch safety switch—are functioning correctly, as these can prevent the signal from reaching the solenoid.