The Yamaha Grizzly 125 is a compact, versatile all-terrain vehicle (ATV) designed for recreational and utility use. This manual covers the 125cc model, featuring a reliable four-stroke engine, automatic transmission with reverse, electric start, independent front suspension, and a durable chassis. Below are key sections for safety, features, operation, maintenance, troubleshooting, and specifications.
Key components: 125cc 4-stroke SOHC engine, Automatic V-belt transmission with reverse, Electric start, Independent double-wishbone front suspension, Solid rear axle, Front and rear hydraulic drum brakes, Steel frame.
| Feature | Description |
|---|---|
| Engine | 125cc air-cooled 4-stroke, SOHC |
| Transmission | Automatic V-belt, forward and reverse |
| Starting System | Electric start with auxiliary recoil |
| Suspension Front | Independent double wishbone |
| Suspension Rear | Swingarm with single shock |
| Brakes | Hydraulic drum front and rear |
| Fuel Capacity | Approx. 2.5 gallons (9.5 liters) |
| Tires | ATV-specific knobby tires |
| Load Capacity | Includes rider, cargo, and accessories |
| Instrumentation | Speedometer, odometer, fuel gauge, indicator lights |
Always perform a pre-ride inspection to ensure safe operation.
WARNING! Never operate the ATV if any component is damaged or malfunctioning. Always wear appropriate safety gear.
Familiarize yourself with all controls before riding.
CAUTION! Practice in a safe, open area. Avoid sudden throttle or brake inputs. Never carry passengers unless specifically designed for it.
Regular maintenance ensures longevity and safety. Refer to the manual for detailed intervals.
| Item | Initial (mi/km) | Every (mi/km) |
|---|---|---|
| Engine Oil | Check/Change | 100 / 600 |
| Oil Filter | Change | As recommended |
| Air Filter | Clean/Inspect | 300 / 1800 |
| Spark Plug | Inspect/Replace | 600 / 3600 |
| Brake Pads/Shoes | Inspect | Every ride |
| Drive Shaft/Bearings | Lubricate/Inspect | 600 / 3600 |
| Tire Pressure | Check | Before each ride |
| Nuts & Bolts | Tighten | 100 / 600 |
Engine Oil Change: Warm engine, drain plug, replace oil and filter. Air Filter: Remove, clean with compressed air or replace. Spark Plug: Check gap, clean, or replace. Brake Adjustment: Check lever free play, adjust if necessary.
Tip: Use only Yamaha recommended fluids and parts. Torque fasteners to specified values.
For long-term storage (over 30 days):
WARNING! Gasoline left in the system can degrade and cause starting issues. Proper preparation is essential.
Always wear a helmet, eye protection, gloves, long sleeves, long pants, and over-the-ankle boots. Never operate on public roads unless legally permitted. Avoid paved surfaces; ATV tires are not designed for pavement. Ride only on designated trails. Never carry passengers unless the ATV is specifically designed for more than one person. Complete a training course. Never ride under the influence of alcohol or drugs.
Yamaha Motor Corporation provides a limited warranty. See your dealer for details. For technical support, parts, or service, contact an authorized Yamaha ATV dealer or visit www.yamahamotorsports.com.
| Symptom | Possible Cause | Corrective Action |
|---|---|---|
| Engine won't start | Fuel, spark, battery | Check fuel level/valve; inspect spark plug; check battery charge. |
| Loss of power | Clogged air filter, fuel issue | Clean/replace air filter; check fuel line and carburetor. |
| Poor braking | Worn pads, low fluid, air in line | Inspect pads/shoes; check fluid level; bleed brakes if necessary. |
| Transmission slipping | Worn drive belt, adjustment | Inspect drive belt; check adjustment per manual. |
| Electrical issues | Blown fuse, loose connection | Check main fuse; inspect wiring harness connections. |
Note: For complex issues, consult an authorized Yamaha service technician.
Service: Contact your local authorized Yamaha ATV dealer.