Rotax Engine Forum (36)

Discussions Replies Latest Activity

Charging issue

So about 2 weeks ago I was flying along and started having an intermittent low volt light come on with a drop in the voltage to just above…

Started by Charles Clayton

3 Jun 12, 2019
Reply by Charles Clayton

Don’t fret...

I recently noticed a damp patch on top of my Rotax 912uls engine while doing a preflight check. I couldn’t see any obvious source of the le…

Started by Shay King

6 Apr 16, 2019
Reply by Ken Ryan

Fuel

I’m curious as to what people think should be the fuel to use in the 912 (ULS) and then what they actually do. I’ve been using the highest…

Started by Paul Sanders

5 Feb 13, 2019
Reply by Bob Hartunian

Electrical questions

Anyone out there able and willing to talk how they wired, switched, and protected their external voltage regulator on their 912? If so plea…

Started by Jim and Amelia Isaacs

0 Feb 12, 2019

Coolant overflow bottle

The Zenith 912 FWF kit comes with a coolant overflow bottle that looks to me like a medical irrigation bottle, but the published installati…

Started by Jim and Amelia Isaacs

9 Jan 17, 2019
Reply by Jim and Amelia Isaacs

Oil tank vent/purge

I’m installing the engine and the manual depicts a hose connected from the vent fitting on the tank neck simply dropping down to an exit ar…

Started by Jim and Amelia Isaacs

3 Jan 11, 2019
Reply by Shay King

701 Ring mount water pump outlet clearance

Just uncreated my new 912 and installed the ring mount, but the lower left water pump elbow sits too close to one of the ring mount bracket…

Started by Jim and Amelia Isaacs

14 Jan 6, 2019
Reply by Jim and Amelia Isaacs

912 Radiator brackets

I just hung the engine and mounted the coolant radiator using the brackets supplied in he Zenith FWF Kit. Straightforward, but after steppi…

Started by Jim and Amelia Isaacs

1 Jan 1, 2019
Reply by Jim and Amelia Isaacs

Drilling the oil tank clamp

So, drill four holes in a couple of hose clamps and secure the the oil tank neck to the firewall with the hose clamps. Sounds simple, no? A…

Started by Jim and Amelia Isaacs

7 Dec 30, 2018
Reply by Jim and Amelia Isaacs

Ordered a new 912UL

I finally terminated my two year search for an affordable (my definition of affordable was about half the price of a new one) “no stories”…

Started by Jim and Amelia Isaacs

7 Nov 14, 2018
Reply by Wayne Woloshin

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