Dr.Ben
Elite Veteran
Location: Richmond, VA, USA
| With the pump/pressure system making sure the needles don't go too lean towards tank end, the break in really is a no brainer. Hover a tank or two, then lean things in enough to make the motor useable upstairs. Do lots of autos, because they help heat cycle the motor. Keep working the needles in a tiny bit at a time until the motor is running a rich two cycle WOT. Every several tanks the motor wil get rich again as it continues to break in. Lean it back as needed. After several gallons, the settings will stabilize out. Be prepared for the power to continue to increase over the next case and a half. By 8 gallons, the motor will just plain howl. The OS's seem to run in more quickly, but Curits and a lot of others have warned that if you rush the break in and get too lean, the motor will never reach its potential. You really have to be careless to over lean a YS that much a make it overheat.
Ben Minor |
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