Oil cup j4 magneto

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Scooter1
Posts: 21
Joined: Sun Mar 29, 2020 8:12 pm
Zip Code: 45176
Tractors Owned: 1948 cub

Oil cup j4 magneto

Postby Scooter1 » Mon Oct 19, 2020 7:25 am

Need to replace the oil cup on the magneto.
Cap has broken off the oil cup.

Which oil cup should in order.
1/4” or 5/16”?

Gary Dotson
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Re: Oil cup j4 magneto

Postby Gary Dotson » Mon Oct 19, 2020 8:11 am

I'm pretty sure you need the 1/4" Scott.

Scooter1
Posts: 21
Joined: Sun Mar 29, 2020 8:12 pm
Zip Code: 45176
Tractors Owned: 1948 cub

Re: Oil cup j4 magneto

Postby Scooter1 » Tue Nov 03, 2020 8:09 pm

Any tricks or tips for removing old and installing new oil cup?

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Rick Spivey
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Re: Oil cup j4 magneto

Postby Rick Spivey » Wed Nov 04, 2020 7:37 am

Removal is fairly easy, I have used a pair of cutting pliers to "grab" the cup and pull/twist it out. They are just pressed in. For install, find a drift, back end of a drill bit, wooden dowel, etc. the exact size of the inside of the cup. There's a small ledge that you want to push against. Then just push/tap it in.
Rick Spivey
'52 Cub ("Great Personality") 148xxx
'48 Cub with FH ("Gunny Cub") 38xxx
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Clemsonfor
501 Club
501 Club
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Re: Oil cup j4 magneto

Postby Clemsonfor » Wed Nov 04, 2020 9:17 am

Could you put a little rubber cap on it. Like one for an automotive vacuum line. Quick easy and be done with it. Yep I know it's not the correct way and correct part but some people that doesn't bother. Just throwing another idea out there.

Barebones
10+ Years
10+ Years
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Joined: Sun Jun 21, 2009 8:28 pm
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Tractors Owned: 1948 Cub, 1948 Ford 8N,
1954 Ford NAA, 1956 Allis Chalmers IB
Location: Owosso, Michigan

Re: Oil cup j4 magneto

Postby Barebones » Sat Nov 07, 2020 5:10 pm

I have a .25 auto case on mine. Snug fit with a cool factor.


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