How to Bleed the Brakes on a Yamaha Grizzly

Opening the braking system on your Yamaha ATV introduces air into it. 

That air can result in a spongy feel in the brakes and a loss of braking performance. Getting the air out of the system by bleeding the brakes is a must when you open the system, and a solid way to resolve braking issues. Here’s what you need to know if you’re bleeding the brakes on your Yamaha Grizzly.

Tools and Supplies Needed – Yamaha YFM 700 Grizzly Brake Bleed

Tools

Yamaha Grizzly ATV Brake Bleed 

Step 1. Place paper towels underneath the brake reservoir on the handlebar, then open the reservoir by removing the two Phillips head screws. 

NOTE: Be careful with spilled brake fluid, as it could ruin your machine’s paint. 

Yamaha Grizzly brake bleed

Step 2. Remove the plastic cap and the rubber diaphragm underneath it. 

NOTE: See #5 and #6 in our Yamaha Grizzly master cylinder diagram

Yamaha Grizzly 700 brake bleed

Yamaha YFM700 brake bleed

Step 3. Top off the reservoir with brake fluid. 

NOTE: Throughout this process, make sure you keep pouring more fluid in the top as you move brake fluid through the system. This is especially true if you use a fluid extractor, which pulls fluid through the system quickly. 

Yamaha YFM 700 brake bleed

Step 4. Remove the black rubber dust cap covering the bleed valve, which is located down at the right front caliper.  

Yamaha Grizzly YFM700 brake bleed

Step 5. Attach a 3/16th hose to the valve with an 8mm wrench, and have the other end of the hose lead to a drain pan or bottle to collect the old fluid.  

Yamaha Grizzly ATV brake bleed

Step 6. Pump the brake lever several times, then open the bleeder valve with an 8mm wrench.

NOTE: When you bleed the brakes manually, what you’re doing is building brake pressure through the brake lever and releasing it through the bleed valve.  

Yamaha YFM700 ATV brake bleed

Yamaha ATV bleed brakes

Step 7. Close the valve and repeat Step 6.

NOTE: Be mindful of the level in the reservoir through the process. It should take about three full reservoirs to clean the system out. 

Step 8. Repeat the process on the other side.

Step 9. Set the level by adding clean brake fluid to the reservoir. 

Yamaha Grizzly 700 brake bleed

NOTE: There’s a line that denotes the low end of the desired level. If you have new brake pads, fill it up to the top of the glass. If you’re bleeding the brakes with older pads and are about to replace them soon, don’t fill it up all the way. The new pads will push fluid up the system from the caliper, and you’ll need room for that fluid in the reservoir.

Step 10. Replace the plastic cap and rubber diaphragm.  

Yamaha YFM700 Grizzly brake bleed

Step 11. Replace the reservoir cap, then tighten down the two Phillips head screws holding it in place and you’re done. 

Yamaha Grizzly 700 bleed brakes

If you’re ready to change out the brake pads on your Yamaha Grizzly 700, we have that covered too: 

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