Starting the 912iS

[jdmcbean]

The start sequence is pretty straight forward and simple.. We actually had a timed relay early on and decided against it as a normal practice. Without getting too much into the "argument" of either.. we chose to stay with a single switch that is on-off-(mom) DPDT switch. The momentary is for normal starting.. the on is the backup power... works well and to put emergency power direct to the engine requires a single switch.. it is included with your fwf kit. Your wiring diagram for that switch may be incorrect.. so please email me directly for an update.

Master - on
Fuel Pump - on
Throttle - crack
Momentary - hold
Lane A - On - wait for light to go out
Lane B - On - wait for light to go out
Start Button - push to start
After start - release momentary
RPM to 2400+ until generator comes online then reduce to idle.

[Cherrybark]

John,

Thank you for providing your experience with the timer and for the definitive starting sequence. You wouldn't think we could get ourselves in a tizzy about what should be a simple thing. But it's a long way between drilling holes for switches in the console and actually wiring the engine. Sometimes book learning doesn't do.

Email request set for wiring diagram.

[rosslr]

I have 300plus hours on the 912is now. I installed using the Kitfox FWF kit for the 912is and used all their switches etc. Yes, you need to read both the Kitfox and Rotax manuals in order to cross reference and understand the system - but it is not difficult. Yes, the Rotax Operations manual needs to be referenced for the start sequence but it is very clear in there. I installe dthe switches along one row to represent the start sequence. The momentary power and start switch is really easy and a 'non-even't really - I have no desire or need to replace it - it is certainly easy and not a 'pain' to use.

I think that the language used to describe the 912is system takes a little getting used to and Rotax does need to make its manual more 'plain english'. EG. I, like others, got confused by the meaning of the' back up battery switch'!

But like the others have said, what a nice engine! starts first time every time - hot, cold whatever!

Good luck and happy to share photos or diagrams if needed.

cheers

ross