We would suggest a minimum running in period of 250 miles. During this time the spark plug needs to be inspected regularly to confirm correct jetting. For the first 100 miles we would suggest using a 4% two-stroke oil mix in the
petrol. Full throttle is permitted during running in but always back the throttle off once the engine has accelerated away. Do not allow the engine to reach maximum revs (no more than approximately 70% throttle, maximum). Vary speeds and do not over rev when going through the gears. Do not hold throttle open for extended periods while climbing or descending hills, do not allow the engine to “over run” especially at higher speeds. Use the running in period to
evaluate how the engine characteristics have changed.