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1938 - 250 Model B
Posted: Sat Mar 24, 2018 1:55 pm
by Steve P
Good afternoon,
New to the club. Just bought a 250 model B and have a couple of questions.
1. Looking for the part number for the tool to fit the kick start return spring/collar?
2. How much grease needs to go in the gearbox?
3. Can someone explain how to use the "mag" and "exh" levers on the left of the handle bars?
4. Can someone explain the proper use of the neutral level at the rear of the gearbox?
5. On the tappet cover below the head there is a small lever. What is that for?
That's it for now. Looking forward to hearing from you guys.
Thanks Steve
1938 - 250 Model B
Posted: Sat Mar 24, 2018 5:11 pm
by Alan R
Hi Steve--------can't help you much with the questions but I thought this video might give you some idea what an Enfield from the 1930's - 40's is all about...ENJOY !!........
1938 - 250 Model B
Posted: Sat Mar 24, 2018 5:23 pm
by Alan R
I must just add that's not me ----- I lifted the video off youtube -------- here's the one that my late friend Tim used to ride}----------------------

1938 - 250 Model B
Posted: Sat Mar 24, 2018 7:01 pm
by Mark M
Steve, I don't know the B but I think I have a pre-War instruction book somewhere so I'll have a look later. In the meantime 1) I wasn't aware there was a tool for the k/s spring, on post war bikes with the same arrangement you wind up the spring with the cup and push it over the shaft then try and get the k/s lever on before it pings off. It takes practice! 2)Grease is usually up to the filler line, you heat it (gently!) until it will pour. 3) "mag" is the advance retard for the spark, best if you Google what this means if you don't already know. "exh" I'm not sure but this could be the decompressor for stopping the engine and assisting getting it over TDC for starting. 4) The neutral lever is for finding neutral from any gear EXCEPT first. While still moving ideally, you pull in the clutch (lots of riders fail to do this,) and tap the lever with your heel, it should go straight to neutral if properly adjusted. 5) I looked at a pic of a 38 B and I can't see a lever on the tappet cover but this could be the decompressor lever, there should be a cable attached running back to the handlebars? Pictures would help!
REgards, Mark
1938 - 250 Model B
Posted: Sun Mar 25, 2018 3:12 pm
by Steve P
Good afternoon Alan, Mark,
Thanks for the replies. They were both helpful.
Below (I hope) is a photo of the lever on the tappet cover. I was guessing it had something to do with the exhaust valve. I just cannot find any info on how it works.
Got the bike going yesterday. Couldn't kick it, but had to bump start it. Sounds great.
Steve
1938 - 250 Model B
Posted: Sun Mar 25, 2018 3:12 pm
by Steve P
1938 - 250 Model B
Posted: Sun Mar 25, 2018 3:16 pm
by Steve P
1938 - 250 Model B
Posted: Sun Mar 25, 2018 3:25 pm
by Jamesy
I am assuming Steve you have taken the cover off and had a look at the innards.
1938 - 250 Model B
Posted: Sun Mar 25, 2018 4:51 pm
by Mark M
That looks like the same arrangement that was used on the OHV Model CO and G although those bikes have the lever wholly inside the tappet chest with only the cable emerging from the front. At the rear of the cylinder I can see a threaded boss? which looks like it could be part of the anchor point for the cable. Either way, something is missing to make that work. Try phoning our Hosts, although they specialise in post War Enfields they do have some dealings with the pre-War models and also have some spares. The B may well share something with the war-time Model C for instance. I have ridden a C but I can't remember how the decompressor worked. And I noticed the exhaust wrap, what are you thinking! Poor old bike, 80 years old and got up like a hipster!
REgards, Mark Stop Press, just found a pic of a C I took at Kempton Park Autojumble a couple of weeks ago and it has the valve lifter inside the chest.
1938 - 250 Model B
Posted: Sun Mar 25, 2018 5:56 pm
by Alan R
Hi Guys------------ Have a look at item 44 = "VALVE LIFTER".........................
