912 S2 Maintenance Manual Line

Hello ANH,

Yes, the gearbox and overload clutch must be inspected at 1000 hours regardless of the type of clutch you have or the fuel you operate. If you have a clutch with no lead drain holes and operate with more than 30% 100LL fuel, then you have to conduct a clutch inspection at 600 hours. However, if your clutch has lead drain holes and you operate with more than 30% 100LL fuel, then you can perform the clutch inspection at 1000 hours. Regardless of the fuel you use, the 1000-hour clutch and gearbox inspection is still required.

Make sure you are using the most up-to-date manuals that can be found in the support/bulletins tab on the Rotax-Owner site or the FlyRotax web site

https://www.rotax-owner.com/pdf/MML_912-Series_Ed4-Rev1.pdf

Hi Anh,

RW is very knowledgeable.  Follow RW's recommendation.  Do not let the gearbox go with no maint. You may have a small overhaul / inspection bill now, but if you let it go with no maint. it could get quite expensive. Remember an ounce of prevention is worth a pound of cure.