Bushing by Yamaha

Yamaha UTV/ATV & Side by Side Engine Governor - Available at buywitchdoctors.com

Product Specifications: Genuine OEM Yamaha Bushing, Part # 90386-08141-00.

Keep your machine running like new with a genuine Yamaha Engine Governor paired with premium maintenance parts from buywitchdoctors.com. The engine governor is the mechanism that regulates engine speed and keeps the engine from over-revving, using either a mechanical flyweight assembly with arms, springs, and linkage or an electronic control that reads sensor signals and limits the engine through the control unit. A healthy governor helps hold a steady speed under changing loads, protects internal parts from over-speed damage, and keeps the throttle response predictable. Riders most often replace an engine governor after surging or hunting at a steady throttle, an engine that over-revs or will not hold a steady speed, a lack of power or an engine that seems held back, a stuck, worn, or broken governor arm or spring, a binding or loose linkage, metal debris in the oil from worn governor parts, a fault code tied to speed control, or damage from low oil, overheating, or a hard trail impact.

Why Choose Genuine OEM Yamaha Parts?

Choosing original equipment manufacturer (OEM) parts ensures your vehicle maintains its factory-standard performance, reliability, and fuel efficiency. Genuine parts eliminate the guesswork of aftermarket alternatives, offering a seamless integration with your engine's configuration.

• Exact-Fit Design: Matched to Yamaha's original bolt patterns, sealing surfaces, and dimensions for a leak-resistant fit.
• Factory-Spec Quality: Built to the same standards as the parts installed on your machine at the factory.
• Peace of Mind: Skip the trial and error of universal or aftermarket parts that may not seal or align correctly.

Premium Materials & Precision Engineering

Crafted to strict factory tolerances, these components utilize high-grade alloys and chemical-resistant seals. This specialized engineering withstands harsh off-road vibrations, extreme temperatures, and modern fuel additives, preventing premature wear and leaks. The engine governor uses hardened, precisely balanced flyweights, pivots, and springs, or sealed, calibrated electronics with corrosion-resistant connectors, matched to your engine's speed characteristics, so it responds smoothly and consistently through heat cycles, vibration, and constant high-speed rotation.

Comprehensive Model Fitment (2015-Current)

This genuine OEM part is engineered for a wide range of Yamaha side-by-side (SxS) and all-terrain vehicles (ATV) built from 2015 to the current model year. Please verify your series matches below:

Utility Task Vehicles (UTVs / Side-by-Sides)

• Viking Series: Viking 700 EPS, Viking 700 Ranch Edition, Viking VI EPS
• Wolverine Series: Wolverine R-Spec, Wolverine X2 850, Wolverine X4 850, Wolverine X2 1000, Wolverine RMAX2 1000 (Sport, XT-R, Limited), Wolverine RMAX4 1000
• YXZ Series: YXZ1000R, YXZ1000R SS

All-Terrain Vehicles (ATVs)

• YFZ Series: YFZ50, YFZ450R, YFZ450R SE
• Raptor Series: Raptor 90, Raptor 110, Raptor 700, Raptor 700R, Raptor 700R SE
• Grizzly Series: Grizzly 90, Grizzly 110, Grizzly 700 EPS, Grizzly 700 SE, Grizzly 700 XT-R
• Kodiak Series: Kodiak 450, Kodiak 450 EPS, Kodiak 700, Kodiak 700 EPS, Kodiak 700 SE

⚠️ IMPORTANT DISCLAIMER: Fitment can vary by production date and sub-model trim. Always verify your exact original equipment part number from your vehicle's schematic or consult a certified technician before finalizing your purchase to guarantee flawless compatibility.

Other Popular Parts & Secondary Accessories

• Seat Belt Bypass: A seat belt bypass is an accessory some riders use on machines with belt-sensing systems that can affect how the machine runs or limits speed. Because seat belts are a key safety feature, follow your Yamaha service manual and local rules for how and when to use these parts.
• Crankshaft Position Sensors: The crankshaft position sensor tells the control system how fast the engine is turning, which is the signal an electronic governor relies on. If you have surging, stalling, or speed-control fault codes, test the sensor and its connector along with the governor.
• Speed Sensors: Speed sensors send the signal the control system and instruments use to know how fast the machine is moving. If speed behavior or readings seem off, inspect the sensor, its mounting, and its wiring along with the governor.
• CVT/Clutch Components: Clutch weights, rollers, springs, and sheaves shape how engine speed turns into vehicle speed. Check them whenever you service the governor, since worn clutch parts can cause surging or poor speed control that looks like a governor problem.

Frequently Asked Questions (FAQs)

Q: How do I know when my Yamaha engine governor needs to be replaced, and how do I confirm the right one for my machine?
A: Look for surging or hunting at a steady throttle, an engine that over-revs or will not hold speed, a feeling that the engine is held back, a stuck, worn, or broken governor arm or spring, loose or binding linkage, metal debris in the oil, and speed-control fault codes. Before replacing it, check the throttle cable, throttle body, air filter, fuel delivery, sensors, and CVT condition, since these can cause similar symptoms. Because governors vary by model, model year, and engine, and not every engine uses the same type, confirm the correct part and setup procedure using your Yamaha service manual or factory schematic, or contact us with your model and VIN and we will help you match it.

Q: How do mud, water, sand, and heat affect an engine governor on the trail?
A: Mechanical governors live inside the engine, so harsh conditions affect them indirectly: dust or water getting into the oil can wear pivots and flyweights, and low or overheated oil can speed up wear. Electronic governors depend on sensors and connectors that can corrode when mud or water gets in. After a wet or dusty ride, keep your air filter and breather lines sealed, check for milky oil, and avoid aiming a pressure washer at sensors and connectors. Follow your Yamaha service manual for correct service intervals, installation, and water-crossing guidance.

PRO TIP: Learn More about Yamaha OEM vs. Aftermarket Parts

PRO TIP: UTV Engine Governor Failure: Fixing Sputter & Speed Loss

PRO TIP: How to Diagnose a Bad UTV or ATV Crank Position Sensor

Are You Looking to Find Great Places & Adventurous Trails to Ride Your UTV, Side by Side or ATV? Check out these highly recommended places:

• Northern Outdoors
• Imperial Sand Dunes
• Johnson Valley OHV Area
• Gypsum City OHV Park
• Leatherwood Off-Road Park