2-Stroke Engine Break-In

After engine has been completely installed in chassis. Be sure all fluids have been filled (coolant, trans oil. etc.). Before starting a freshly rebuilt or new engine it is strongly recommended that you make sure that the carburetor has been thoroughly cleaned and fuel tank has been flushed clean. Fresh fuel/oil mixture has been used, air box has been cleaned and a new or freshly serviced air filter has been installed. Once the above steps have been completed, start your engine and follow the break-in procedure.

PART 1 ( 2-Idle periods, 2-Cool down periods )

IDLE: Start engine and let idle with a fan blowing on the radiator, to simulate riding conditions without a load on the engine. Engine must idle for exactly 15 minutes.
COOL DOWN: Shut engine off after 15 minutes and let machine cool down for a minimum of 30 minutes. Let fan continue to blow on engine.
IDLE: Repeat first step.
COOL DOWN: Repeat second step.

PART II ( 6-Riding periods, 6-Cool down periods )

RIDE: Ride machine for 15 minutes; make sure to vary your RPM range. Ride machine at 50% of your normal riding pace. Be careful not to put any unnecessary grain on the motor during break-in.
COOL DOWN: After 15 minutes of riding. Shut machine off and let machine cool down for a minimum of 30 minutes.
RIDE: Repeat initial riding period. But ride machine at 60% of your normal pace.
COOL DOWN: Shut machine off and let machine cool down for a minimum of 30 minutes.
RIDE: Repeat initial riding period, but ride machine at 70% of your normal pace.
COOL DOWN: Shut machine off and let machine cool down for a minimum of 30 minutes.
RIDE: Repeat initial riding period. But ride machine at 80% of your normal pace.
COOL DOWN: Shut machine off and let machine cool down for a minimum of 30 minutes.
RIDE: Repeat initial riding period. But ride machine at 90% of your normal pace.
COOL DOWN: Shut machine off and let machine cool down for a minimum of 30 minutes.
RIDE: Repeat initial riding period. But ride machine at 100% of your normal pace.
COOL DOWN: Shut machine off and let machine cool down for a minimum of 30 minutes.

Break in should now be complete. Confirm that carburetion settings are correct and give your machine a complete safety check before continuing your riding.

TIPS FOR A SMOOTHER BREAK-IN

- Do not use paddle tires. Stay away from deep sand dunes, mud etc until break-in is complete.

- Check coolant level after Cool Down periods. Make sure machine is cool before opening radiator cap. Break-in engine with same gasoline, premix A and same mix ratio that you plan to use permanently.

- Check carburetion jetting periodically during break-in.

- Check that all engine mount and chassis bolts are secure during Cool Down periods.

- Check ALL radiator hoses and carburetor clamps are secure.