Aluminum CNC tool manufactured in Alaska for simple and perfect magneto timing.
Very easy to use! Simply position engine on #1 TDC compression stroke. Lube grommets. Put this tool on the top two propeller nuts and sight down top case halves to see exact mag timing. Now there's no need for propeller protractor cones!
This is a great tool if you want to do a quick check on your magneto timing for the recommended engines.
The O-300D has the same propeller bolt pattern an the O-470, IO-520,& IO-550 which is 6 1/2 holes in a 4 diameter. The tool works on the O-300 D!
I had set my timing using the older method. Then used this to check. I was very pleased how easy and I think more accurate using this tool is. There are too many steps in the old method where you can make 1 to 2 degree errors. This is right on. I use a mirror to sight down the spine of the case. Very accurate
After using the flower pot and piston stop this tool is fantastic! get #1 on TDC, Install this tool set 22 degrees and install and set the mags.
One of the most useful tools for working with Continental engines. Much better than the traditional timing indicator (dial on the prop). A must have item due to its simplicity, ease of use and speed.
Doesnâ€™t work on a plane with prop electric de-ice.
Doesnt work on TCM O-300D. According to web site it does. Tool only lists 470,520 & 550 engines. Actual attempt failed.
These engines are not listed. Per the application info this is used on TCM 0-300D, 470, 520, 550.