All,
I had the same problem on my 82 450 - I switched oils - and that solved
the problem. I was using either off brand auto parts store oil or Mobil
products and none of them met that JASO / MA spec. Once I switched to an oil
that did - the clutch came back.
Double check your oil!
-Joey
On Tue, Apr 19, 2011 at 4:29 PM, Robert Kariniemi <
[email protected]> wrote:
> Bob,
> I have the exact same problem with my bike--82 Nighthawk CB 450. It slips
> a little under hard acceleration in third gear. Mine has only 17,500 miles
> on it but sat for 5 years in a garage. So I studied the clutch plates
> carefully, and read up on it. It seems that just sitting is not always
> good! One or two plates are probably stuck together still. I separated all
> the plates and carefully reassembled it. Some interfaces were just kind of
> dried out, ie not much oil left there and others were still adequate in oil.
> That is the issue. Mine is getting better as I ride it--hard at times, but
> it still slips a little once or twice a week in third gear under hard
> acceleration. It does not do it every time. The adjustment is critical.
> Move the nut by the handle and the one at the gear box carefully with a
> repair manual to follow.
> Robert
> -----------------------------
>
> On Tue, Apr 19, 2011 at 9:48 AM, Bob Bunnell <[email protected]>wrote:
>
>>
>>
>>
>>
>> Well, I got the bike back together after moving the engine out of an ‘83
>> 550 sc frame and mounting it in an ’84 650sc frame. Used a mix of parts
>> from both bikes to make one.
>>
>>
>>
>> Runs well. Clutch seems to slip under hard acceleration in 3rd gear. I
>> also noticed that the clutch lever has to only be barely squeezed to get the
>> clutch disengaged [i.e. No free play at all]. Anyone have any experience
>> with these clutches? Any adjustments? Suggestions? Thanks!
>>
>>
>>
>> PS: I have a bunch of spare parts if anyone needs them…
>>
>>
>>
>> Bob Bunnell
>>
>> 518 314-1612
>>
>> [email protected]
>>
>> Back Porch Band
>>
>> www.backporchband[dot]com
>>
>> <[email protected]>(copy this link and then replace "[DOT]" with
>> ".")
>>
>>
>>
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>
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--
-Joey Kelley
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