7 Common Yamaha Wolverine 850 Problems (How to Fix Them)

The Yamaha Wolverine 850 has been known to deliver an exceptional off-road experience to riders. 

However, as with any mechanical device, it may occasionally encounter certain problems. 

In this article, I will highlight some of the common issues Yamaha Wolverine 850 owners reported and provide solutions.

Yamaha Wolverine 850 Problems

yamaha wolverine 850 problems

1. Inadequate Heating

The heating problem seems to plague the Wolverine 850 models exclusively. Users have reported that the heating system doesn’t produce as much heat as expected.

The issue could be attributed to the default thermostat settings, which start opening at 154°F and are fully operational at 180°F. 

However, when the vehicle is in motion, the thermostat doesn’t rise above 170°F, inhibiting the heater’s functionality.

Solution: Some users have suggested blocking off the radiator and insulating the pipes to increase heat generation. 

However, this solution might only be effective in moderately cold conditions. 

Yamaha is reportedly aware of the issue and is working on a permanent fix.

2. Rider Discomfort

One significant issue riders face is discomfort due to foot positioning while navigating challenging terrains at low speeds. 

However, the foot angle is comfortable at 30 mph; it can become painful at 2-3 mph.

Solution: You can use a wooden block in front of the gas pedal because it can elevate the foot’s heel to a comfortable angle at any speed. 

However, this is a workaround and not a permanent solution.

3. Throttle Responsiveness

Some Wolverine 850 models have reported unresponsive throttles or harsh acceleration. 

Although dealers often say this is due to poor fuel quality, a slack throttle cable, or a faulty seat/seatbelt sensor, it is usually due to fuel insufficiency.

Solution: Monitor how long it takes for the machine to show issues, and check if your fuel line or pickup is defective. 

You also need to inspect the choke butterfly, clean the carb and air filter, and drain the tank completely.

4. Fuel Tank Issues

Water leakage into the fuel tank can occur due to rainwater infiltration or a loose tank top. 

This can be especially detrimental to motorcycles equipped with YFI, as water can damage engine components and fuel injectors.

Solution: If you notice starting problem during acceleration. 

You should immediately remove the water from your tank by siphoning it from the gas cap or draining it via the drain plug.

5. Cab Heat Intensity

A frequently discussed issue with the Yamaha Wolverine 850 is the intensity of the cab heat. 

This is primarily due to cooling lines running along the firewall, causing the driver’s right foot and the passenger’s left foot to heat up.

Solution: Opening the door and insulating the tunnel alleviates this issue.

6. Parking Brake Issues

The Wolverine’s engine braking system (EBS) is exceptional, but the parking brake can occasionally get stuck.

Solution: Never leave your brake on overnight to prevent this issue. 

If it does occur, you can disengage the brakes by rocking your vehicle back and forth or manually pulling the brake wires.

7. Engine Problems

Engine problems can range from reduced engine power to overheating and starting issues. 

It is mostly due to a blocked injector, empty fuel tank, dirty or broken spark plug, damaged ignition coil, or a blown crankshaft position sensor.

Solution: Replacing the faulty part can resolve Most of these issues.

Technical Specifications of the Yamaha Wolverine 850:

Engine Type4-stroke, DOHC, parallel twin
Engine Displacement847cc
Cooling SystemLiquid-cooled
Fuel SystemElectronic Fuel Injection (EFI)
TransmissionUltramatic V-belt with all-wheel engine braking, L/H/N/R/P
Drive SystemOn-Command selectable 2WD/4WD/4WD with Diff Lock
Front SuspensionIndependent double wishbone
Rear SuspensionIndependent double wishbone
Front Travel8.7 inches (221 mm)
Rear Travel8.9 inches (226 mm)
Front BrakesDual hydraulic disc
Rear BrakesDual hydraulic disc
Front Tires26 x 8-12
Rear Tires26 x 10-12
Length116.9 inches (2975 mm)
Width62.2 inches (1580 mm)
Height73.6 inches (1870 mm)
Wheelbase81.3 inches (2065 mm)
Ground Clearance11.4 inches (290 mm)
Fuel Capacity9.7 gallons (36.7 liters)
Dry Weight1,565 lbs (709 kg)
Colors AvailableTactical Green, Alpine White

Yamaha Wolverine 850: Users’ Opinions

Most Yamaha Wolverine 850 users are satisfied with their vehicles despite the issues. 

They appreciate the reliability and the aftermarket modifications available for these models.

Frequently Asked Questions

What is the top speed of a Yamaha Wolverine 850?

The top speed of the Yamaha Wolverine 850 might range from 50 to 60 miles per hour (around 80 to 96 kilometers per hour).

Is the Yamaha Wolverine a good side-by-side?

Yamaha is known for its build quality and performance, and the Wolverine series generally received positive reviews for its durability, handling, and comfort.


Although the Yamaha Wolverine 850 has its share of issues, most are minor and can be addressed with basic troubleshooting. 

Yamaha’s commitment to customer satisfaction ensures they constantly work on solutions for these problems.

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