Manual - Great Hobbies

THE TRX 3.3 RACING ENGINEProtection ModeThe EZ-Start uses Smart Start technology to monitor the conditionof the system and detect failures. The controller monitors the loadbeing placed on the EZ-Start motor. If the load becomes excessive,the system shuts off power to the motor to prevent costly damageto the motor and the controller. This may occur, for example, if theengine floods with fuel during starting. The starter spins at first butwhen excessive fuel in the combustion chamber begins to lock up theengine, the starter motor slows under the heavier load. This causesthe protection circuit to shut off the power to the motor. Allow at least3 minutes for the starter motor to cool and the circuit to automaticallyreset before continuing. Use the time to find and eliminate thecondition that caused the excessive load on the starter motor.When the EZ-Start controlleris in protection mode, waitat least three minutes beforeattempting to start theengine, to give the startermotor time to cool.It’s normal for your EZ-Startcontroller to become warmafter repeated use.Use a Strong Starter BatteryA weak starter battery, or one that has not been fully charged, maynot deliver enough power to crank the engine over at the appropriaterpm to keep the piston from sticking at top dead center (TDC). A newengine will typically have a tight fit between the piston and the top ofthe sleeve. This is a tapered fit, and a tight piston sleeve fit on initialstartup is desirable for those who want the best-performing engine.Make sure you are using a good quality battery pack that is fullycharged (new batteries usually require several charge cycles to reachpeak voltage and full capacity). This is especially important with a newengine that needs to be broken in. If the engine sticks at TDC, seepage 36 for instructions on freeing the engine.Shutting Off The EngineTurning off the switch for the radio will not shutoff the engine. To shut off the engine, use theshut-off clamp on the fuel line. Squeeze theclamp closed to shut off the fuel supply to theengine. Don’t forget to release it when you restart the engine.Avoid shutting off the engine by placing your finger over the exhaustoutlet, especially if you are through driving for the day. This willleave more unburned fuel in the engine that could lead to harmfulcorrosion. Always be careful not to touch the exhaust pipe afterrunning, it can become very hot.JATO 3.3 • 23