Traxxas TRX 2.5R Owner's Manual

All instructions and precautions outlined in this manual should be strictly followed to ensure safe operation of your TRX 2.5R Racing Engine. The TRX 2.5R Racing Engine is not intended for use by those under 16 years of age without the supervision of a responsible and knowledgeable adult. Safety Precautions All of us at Traxxas want you to safely enjoy your new TRX 2.5R Racing Engine. Operate your TRX 2.5R sensibly and with care, and it will be exciting, safe, and fun for you and those around you. Failure to operate your TRX 2.5R in a safe and responsible manner may result in pr ...

TROUBLESHOOTING THE TRX 2.5R Engine will not spin (pull start or electric starter will not turn the engine): • The engine could be flooded. If too much fuel accumulates in the combustion chamber at start up, the engine will hydraulically lock. Follow the procedure on page 29 for clearing a flooded engine. • Check for binding at the engine flywheel. If you are not able to turn the engine by hand, the engine could be flooded, there could be binding in the clutch system, or there could be internal engine damage. See page 29 for info on clearing a flooded engine and releasing a ...

with after-run oil and make sure the crank is at BDC (bottom dead center), then slowly lower the sleeve until It is just above the piston. Rotate the crank slowly to bring the piston into the sleeve. If there is any resistance, stop! Repeat until the piston moves smoothly into the sleeve. Bring the piston close to TDC, then push the sleeve in fully. Important: The slot (in the lip) at the back of the sleeve must key into the pin at the back of the crankcase opening (1001). Do not install the cooling head until these two items are keyed into each other. Place ...

alcohol or electric motor spray, and lube the roller clutch with after-run oil. Slide the roller clutch onto the starter shaft as shown (1501). Note: The roller clutch is to be installed onto the starter shaft so that the clutch engages the starter shaft clockwise and rotates freely counter-clockwise. The engraved text on the roller clutch faces the engine backplate for correct rotation. Slide the EZ-Start system or pull start onto the starter shaft that exits the backplate of the engine. Line up the drive with the roller clutch. Fasten the EZ-Start g ...