Yamaha SRX120 2013 Youth Operator's Manual
![Yamaha SRX120 2013 Youth manual cover](/images/6fc1a96896da7113ff5c966c/thumbs/thumb175x175.webp)
The recommended fuel type for the Yamaha SRX120 2013 Youth is regular unleaded gasoline with a minimum octane rating of 87.
It is recommended to change the engine oil every 10 hours of operation or at least once per season for optimal performance.
The proper chain tension should have about 0.5 to 0.75 inches of slack when measured halfway between the front and rear sprockets.
Check the fuel level, ensure the choke is in the correct position, inspect the spark plug for fouling, and verify that the kill switch is in the 'run' position.
Regular maintenance includes checking and adjusting chain tension, inspecting the spark plug, changing the engine oil, and lubricating all moving parts.
Drain the fuel system, change the oil, clean the exterior, elevate the sled to prevent track and suspension pressure, and cover it to protect from dust and moisture.
Check for a clogged air filter, ensure the throttle cable is adjusted correctly, and inspect the drive belt for wear or damage.
To adjust the carburetor, first ensure the engine is warm. Adjust the idle screw to achieve a smooth idle, then fine-tune the air-fuel mixture screw for optimal performance.
Performance can be improved by regular maintenance, using high-quality fuel and oil, and considering aftermarket parts like performance exhausts or clutches.
The recommended spark plug for the Yamaha SRX120 2013 Youth is the NGK CR7HSA, which should be gapped to 0.6-0.7 mm.