SOHC.co.uk Forums > CB350/400

Clutch siezed

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Johnwebley:
I recently replaced the clutch plates, fibre only,

After that, the clutch worked well,

But after 500 miles or so, the plates seem to bed in,had to adjust the lifter etc,

I assume the plates became smoother,

I also noticed as the clutch got used, the sticking got slightly more apparent,

So the better the surface, the more likely to stick

Sent from my SM-A546E using Tapatalk

Mikep328:
It's interesting that, from reading posts, this seems to be not uncommon.  But I don't recall it being a problem on any motorcycle I have ever owned and I've owned a lot of them, including 4 SOHC Hondas over the years.  One motorcycle sat in a garage for 2 years between starts and it didn't have sticking clutch plates. 

Athame57:

--- Quote from: Mikep328 on August 16, 2024, 09:47:32 AM ---It's interesting that, from reading posts, this seems to be not uncommon.  But I don't recall it being a problem on any motorcycle I have ever owned and I've owned a lot of them, including 4 SOHC Hondas over the years.  One motorcycle sat in a garage for 2 years between starts and it didn't have sticking clutch plates.

--- End quote ---
Nor me! I've certainly had the opposite, my new CB250N developed clutch slip within about nine months of dispatch riding, and a second hand one soon did the same.

Mikep328:
I rode a bit over 50 miles today.  When I went to the bike this morning, the clutch was sticking again.  Not as firmly as previously but I couldn't easily roll the bike with it in gear/clutch lever pulled.  A heavier attempt and it broke loose.  Since it never did that last year with different oil, I now think the oil may be the issue.  Contrary to most advice here ;)  I used full synthetic motorcycle oil.  The oil that was in the bike when I bought it (per receipts) was the semi-synthetic 10W40 from DSS.  So...I'm thinking I'll drain the almost new synthetic oil (Grrr...) and install the semi-synthetic!  Oh well. it's what I get for not following the advice of folks more knowledgeable re these 400s!

No shifting/sticking issues during the ride but had some (luckily) minor motorcycle excitement (see my "gear lever" post)

UPDate a few minutes later...now thinking straight mineral oil rather than semi/syn.

Athame57:
This is my oil of choice.  8) It's meant for classic bikes in the first place.

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