Clutch plates

[Trigger]

This is the clutch that should be fitted to your K2 >> https://www.cmsnl.com/honda-cb750k4-four-1974-usa_model482/partslist/E++09.html

[Oddjob]

Why would a K4 clutch be fitted in a K2?

[Pauarc]

I just can’t workout where you would fit a 25mm shim wash I only put it there to try to find where it would go I have the keyed washer that goes where I tried that shim washer

[Oddjob]

Part 18 on this diagram

https://images.cmsnl.com/img/partslists/honda-cb750k2-four-england-transmission_bigma000039e18_1229.gif

Why Honda decided to list it on that diagram is beyond me, surely the clutch page would have been far better.

[Trigger]

Part 18 on this diagram

https://images.cmsnl.com/img/partslists/honda-cb750k2-four-england-transmission_bigma000039e18_1229.gif

Why Honda decided to list it on that diagram is beyond me, surely the clutch page would have been far better.

That washer is deep inside the engine Ken and it is not a K2 engine it is a K2 bike with a K4 engine.



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[Trigger]

I just can’t workout where you would fit a 25mm shim wash I only put it there to try to find where it would go I have the keyed washer that goes where I tried that shim washer

I can not see why you would have this washer in the clutch area. Assemble the clutch back in the engine without it and see if it makes a difference 

[Pauarc]

This is my cb750k2 clutch 1975

[Trigger]

Has this engine been apart ? And this shim washer is from inside the gear box ?

[Pauarc]

No not the bottom end that I know off I have done top end

[Pauarc]

Only got shim because it was I thought it was missing from clutch shaft?

[Trigger]

No not the bottom end that I know off I have done top end

OK, that shim washer looks to be all silvery and new. Most washers in the gearbox and clutch have a black coat to them.

All i can suggest to put the clutch back in without that shim washer .

[Trigger]

Only got shim because it was I thought it was missing from clutch shaft?

Why would you put something in that should not be there .

[Pauarc]

I am going to put it back together as it was with no shim I will see how clutch is with smallest clearance

[Pauarc]

Clutch seems to be working better now did about 30miles seem to get worse when it gets hotter could it be oil  what oil do people use is it worth trying 20w50?

[Bryanj]

Nope, stick to 10w40, you need the thin at cold to lube the top end