Honda-SOHC

I managed to disassemble it, thanks for advices!

Trying to identify part no / dimension of oil seal that goes under kick start arm - found this 91204-286-003 (item 32) but not 100%  https://www.cmsnl.com/honda-cb550-k1-four-1975-usa_model466/partslist/E++03.html#.XKE_O5gzaMo

Can somebody advice, please?

Trying to access 3 M6 screws holding field coil - how to remove side cover (pos 1 on the picture) without damaging it?
Service manual does not say anything...

Thanks Julie

I fully understand what you say... but

Fact is old ones are impossble to push in by thumb, needs to be pressed in (or hammered in). I had to hammer them out.
New ones you can see from videos - zero effort to push them in..

Measurements - using digital caliper (almost all of them made in CHina nowadays) is not the best way, zero shifts.
So I took old (30 years) mechanical caliper and made all measuremens, there is no chance that zero shifts:

OD 26.40 -> Old one looks to be a bit bigger around 26.45 - 26.50
ID 21.70 (yes, they have play over the brand new oem collar 52141-300-000) -> forgot to measure old one but you said it should be 21.40 so 0.3mm diff
Total length 44.0 ->OK
Depth of top lip 1.80 -> 0.2mm less
OD of lip collar 32.00 ->OK
Length exl collar 42 - >OK

Sending you PM too

The measurements are as follows:-
OD 26.50
ID 21.40
Total length 44.00
Depth of top lip 2.00
OD of lip collar 31.90
Length excluding collar 42.00 (length sitting inside swing arm)

Measured (using the same mechanical caliper that I can rely on)
OD 26.40
ID 21.70 (yes, they have play over the brand new oem collar 52141-300-000)
Total length 44.0
Depth of top lip 1.80
OD of lip collar 32.00
Length exl collar 42

So seems there are discrepancies - too small OD too small ID. Maybe also lip not wide enough?

Your original bushes, the ones supplied by the PO and the ones I sell measure so close together to make no difference. I would measure the ID of your swing arm and compare with another CB500/4 swing arm. I see you have had your swing arm powder coated. Did you block off the ends before or leave open and then clean powder coat out?

No it is not powder coated. It is only sprayed with black spray. Holes were covered when spraying. If I take mechanical caliper, ID of swing arm is 26.50 OD of bushings 26.4...

So what's wrong? They cannot go inside swingarm by thumb...

As you are in mainland Europe, i would suggest and recommend you buying them from Frank. If you were in UK, I would suggest you buying them off my Ebay page 😀😀😀

So twowheelsfrank is Frank you mentioned, right?