Yamaha TT-R125EW, TT-R125LW, TT-R125LEW 2007 Owner's Manual
![Yamaha TT-R125EW, TT-R125LW, TT-R125LEW 2007 manual cover](/images/650db64df6a5a2cc5f140009/thumbs/thumb175x175.webp)
The recommended oil type for these models is SAE 10W-30 or 10W-40, with a performance classification of API SE, SF, SG, or higher.
The air filter should be inspected and cleaned every 20 hours or 1,000 km (600 mi) of riding, whichever comes first. Clean more frequently if riding in dusty conditions.
The recommended tire pressure is 15 psi for the front tire and 15 psi for the rear tire.
First, check the fuel level and ensure the fuel valve is open. Verify that the spark plug is clean and connected. If the bike still doesn't start, check the battery charge and inspect the carburetor for blockages.
Loosen the axle nut, adjust the chain adjusters on both sides to achieve the correct tension, and ensure the rear wheel is aligned. Tighten the axle nut securely after adjusting.
Brake fluid should be replaced every two years, or more often if it becomes contaminated or if the brakes feel spongy.
The correct idle speed for the Yamaha TT-R125 is approximately 1,400 - 1,600 rpm. Adjust the idle screw on the carburetor to reach the correct speed.
The TT-R125LEW features adjustable preload on the rear shock. Use a spanner wrench to adjust the preload collar to increase or decrease spring tension depending on rider weight and terrain.
Inspect and clean the spark plug every 6 months or 3,000 km (1,800 mi), and replace it every 12 months or 6,000 km (3,600 mi).
Drain the fuel or add fuel stabilizer, clean the bike thoroughly, lubricate moving parts, and store it in a dry place. Disconnect the battery and keep it on a maintenance charger.