Timing marks twenty L 732

If it is timed correctly, I would put a paint mark across the coupling, then disassemble.
The mark you are looking for is on the Fan Belt pulley. My experience is that it is hit or miss that it is still on there.

Haven't any knowledge on the Twenty, but a general rule is you need the impulse to fire after TDC. I would find or make a reference mark to indicate when #1 plug fires as a check on any other way of setting the timing

Hi Colin,
the OMI shows that the mag timing mark is on the front face of the flywheel in behind the three bolt plate--or starter motor if fitted--there is a line on the F/wheel and a matching index mark on the bore of the said hole--you just need to know you are on No1 compression stroke and index the distributor gear/rotor brass insert to No 1 on the mag cap.

Suggest you practice a few times, to see where/what I am talking about, and establish your method for future use--a few photos might help a rusty brain recall later.
My mega dollar red General Instruction Books show two possible mag's so you need to establish your method to suit the upgrade you have.
Hope this helps.
Cheers,
Eddie B.

Thanks for replies will try to get back to it soon. Work gets in the way, crops to spray. No fan pulley on a twenty, gear drive fan on this one.
I will paint a mark on the flywheel via the clutch cover for backup.
Got the grey matter into gear and loaded a photo of the magneto. I am guessing it should be eiseman.
There is grey paint under the yellow but it takes a bit of finding

That's a nice looking magneto, I think the Eisemanns are really good looking. The one on my 3J has some nice styling on it

Hi Colin,
the book shows that the two possible magneto's are an Eisemann GV-4, or the CT-4 units, that I would guess are fitted to later units.
Cheers,
Eddie B.