How to Replace the Drive Belt on a Yamaha Grizzly

Drive belts, or V-belts, transmit mechanical power between parts. Sluggish or jerky acceleration are indicators that it's time to replace your ATV's drive belt. 

A Grizzly YFM700 drive belt change can be done with just a V-belt replacement part and a handful of basic tools. Here's how to do it on your Yamaha Grizzly ATV.

Tools and Parts Needed - Yamaha ATV Drive Belt Replacement


  • 3/8th ratchet
  • Extension
  • 10mm wrench
  • 10mm socket
  • 4mm Allen


Buy the parts to perform your Yamaha Grizzly drive belt replacement, then gather up your tools and follow these steps:

Yamaha Grizzly Drive Belt Change 

Step 1. Remove the footrest cover, the upper seat panel, and the center panel from your machine. Next, remove the 10mm bolts to the outer cover of the drive belt.  

Yamaha grizzly drive belt change


Yamaha Grizzly V-belt change

Step 2. Remove the bearing carrier from the primary sheave for easier access to the drive belt.

Yamaha drive belt replacement bearing carrier

Step 3. Tighten two 10mm bolts with a 6mm thread to open up and release the secondary sheave. This allows the drive belt to come off.

Yamaha ATV V-belt replacement secondary sheave

Step 4. Pull the V-belt off the secondary sheave first before removing it from the primary sheave.

Yamaha ATV drive belt replacement primary sheave


Yamaha ATV V-belt replacement primary sheave

Step 5. Before installing your new drive belt, run your fingers behind the inner and outer plates of the primary and secondary sheaves to check for ripples, which are an indication that the old belt stayed on too long and wore out the sheaves. If you feel any ripples or grooves, consider replacing your primary and secondary sheaves.  

Yamaha ATV drive belt replacement sheave inspection

Step 6. Slide your primary sheave back and forth to make sure it's properly greased for smooth travel of its weights and sliders before installing your new drive belt.  

Yamaha ATV Grizzly drive belt replacement

Step 7. Before putting on the new V-belt, make sure the arrows point toward the front of the machine. 

Yamaha Grizzly V-belt replacement

Step 8. Put the new V-belt around your primary sheave first before adjusting it over the secondary sheave. 

Yamaha ATV Grizzly V-belt replacement

Step 9. Once the drive belt is in place over the sheaves, remove the two 10mm bolts that were used to open up the secondary sheave. 

Yamaha ATV Grizzly drive belt adjustment

Step 10. Put the bearing carrier back in its place, start up your machine and run it through its paces. Look for the primary sheave to push in as it runs. Replace your foot rest cover and all of your plastics and you're all set!

Yamaha Grizzly ATV drive belt replacement final steps


Yamaha ATV V-Belt replacement final steps


Want to learn how to rebuild the clutch on your Grizzly? Watch the Yamaha YFM700 drive clutch rebuild video featured below to see how it's done! 







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