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
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.
Step 2. Remove the bearing carrier from the primary sheave for easier access to the drive belt.
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.
Step 4. Pull the V-belt off the secondary sheave first before removing it from the 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.
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.
Step 7. Before putting on the new V-belt, make sure the arrows point toward the front of the machine.
Step 8. Put the new V-belt around your primary sheave first before adjusting it over the secondary sheave.
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.
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!
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!