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Lucas MN2L Magneto Sprocket removal - any ideas?

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Lucas MN2L Magneto Sprocket removal - any ideas?
Started at 08:43pm on the 14th May, 2018 by colinp
colinp Subject: Lucas MN2L Magneto Sprocket removal - any ideas?
Hi, I am trying to remove the magneto sprocket on my 1956 500 Twin which is attached to its Lucas MN2l Magneto. It is a tapered sprocket (http://http://accessories.hitchcocksmotorcycles.com/38602-1200.jpg). Can anybody recommend a tool or technique to help me remove the sprocket so that I can set the ignition timing.I have loosened its retaining nut successfully. Thanks
Posted: 08:43pm 14th May, 2018
Mark M Subject: Lucas MN2L Magneto Sprocket removal - any ideas?
You need the extractor, it is in the Accesory Catalogue here under Tools l think. Do not use an ordinary puller unless you are very confident! REgards, Mark
Posted: 09:11pm 14th May, 2018
Mark M Subject: Lucas MN2L Magneto Sprocket removal - any ideas?
On second thoughts, MN2L? Hmmm, l'm not sure that's the same extractor as our Hosts sell. I suggest contacting them on the phone. REgards, Mark
Posted: 09:15pm 14th May, 2018
colinp Subject: Lucas MN2L Magneto Sprocket removal - any ideas?
Thanks Mark M sounds like a plan
Posted: 10:16pm 14th May, 2018
Mark M Subject: Lucas MN2L Magneto Sprocket removal - any ideas?
Colin, I just had a look at the parts book, I think it may actually be the same extractor tool as for the manual advance-retard Bullets after all. But you will need to check with Hitchcocks. I was basing my initial comment on my memory of my 1953 700 Meteor but that has a different arrangement as it has a distributor.

REgards, Mark
Posted: 09:12am 15th May, 2018
colinp Subject: Lucas MN2L Magneto Sprocket removal - any ideas?
Thanks for your help. I phoned Hitchcocks and as advised I can now see the inside of the sprocket has a thread and they sell a tool that should do the job. http://accessories.hitchcocksmotorcycles.com/accessory-shop/tools-engine/2811 The workshop manual speaks of a two legged puller but I just couldn't see that there is enough clearance to fit the legs behind the sprocket.
Posted: 04:51pm 15th May, 2018
Mark M Subject: Lucas MN2L Magneto Sprocket removal - any ideas?
That is the magneto sprocket extractor that I referred to in the first place after all! The 2-legged puller they are talking about is designed to hook over the sprocket teeth. I have one but I'm never happy to rely on just the teeth to carry that load.

REgards, Mark
Posted: 05:31pm 15th May, 2018
colinp Subject: Lucas MN2L Magneto Sprocket removal - any ideas?
Tool received today, 30 seconds, sprocket now loose! I can now set the timing.. hooray!
Posted: 09:09pm 16th May, 2018

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