Engine Overhaul and Remanufacturing services are available through Green Sky Adventures, Inc., on request.
Typically, this service addresses items referenced in the Rotax Maintenance-Plan under the column headings of 150 hour and 300 hour, respectively.
Our goal is, to reset the remaining useful hours of your powerplant prior to any failure. We believe this plan is the second best way to avoid engine failure. The surest way, is to never fire it up.

The 300 hour service, for the most part, is a repeat of the 150 hour service, with exception of Crankshaft replacement.
Recommended replacement interval for Crankshafts in Rotax UL series 2-stroke engines is 300 hours or 5 years. Although this recommendation has been considered controversial by some, it is followed, to the letter, on all liquid cooled 2-strokes receiving Green Sky Engine Services. For air-cooled 2-strokes, we will consider extended replacement interval at owner request if we are convinced the increased risk of running past TBO is not significant.

All other parts are replaced based "on condition"
 

Leaks in Primary Combustion Area Though a little rare, the picture at right shows a failed crankshaft seal on this 503. What's not rare, at left,  is to find indications of moderate or worse seal leaks on most engines when performing the 150 hour teardown inspection. This is why we regard the 150 hour service recommendation interval as valid and prudent

Green Sky also will provide "total" reman on request. Component replacement and service for remanufacturing, parallels that provided for the Green Sky  "Program Engines"  the only difference being, that powder coating is one color.