How to remove clutch side casing from CB250 Nighthawk

[BusterGonads]

Should be easy enough. You'd thinks so, but it won't come off.

I wanted to check and clean the oil screen filter under the oil pump on this 12,000 mile, 1997, 250 Nighthawk. I just bought it last week. It runs great, but the previous owner says he doesn't think it had its oil screen cleaned in the time he had it. He was about the fourth owner though. It is possible it was done early on, but anyway - there is only one way to know what state it is in and that is to check.

I bought the gasket and drained the oil and in a short time all the bolts securing the clutch side casing were off and stored in order. The casing did not want to part from its partner though, even after tapping firmly with a rubber mallet and a wooden one.

I've had a good few casings off bikes, all old Brit ones and after a good tap, they come off. Same with my old cars back in the seventies and eighties. This one wasn't going to come off without what I would regard as a dangerous level of violence, so I bolted it all back up, reconnected clutch and tacho drive and put in 1.5 litres of synthetic motorbike oil.

The filter will have to wait a thousand miles until I do another oil change now, but I do want it inspected and cleaned.

Where am I going wrong. A mate I spoke to said you often need to put a blow torch on the case to break the seal. That sounds dodgy, and I don't know where to apply the heat.

Any help would be great if you know the solution. Thanks.

https://photos.smugmug.com/My-First-Gallery/i-cFP76jW/0/f435a4f1/XL/Nighthawk%20clutch%20side-XL.jpg
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2023 Royal Enfield Classic 350; 2000 Honda CG125; 1997 Honda Nighthawk CB250

[Islander]

First question has to be are you sure you've got all of the bolts?

Here's a how to video...

https://www.youtube.com/watch?v=8n74usl268A

[Ste]

Questions about a CB250?

Oh dear, you've really gone and done it now!! I hope you know what you've let yourself in for.

[BusterGonads]

[bikenut]

https://www.cmsnl.com/honda-cb250-nighthawk-1997-v-usa_model7213/partslist/E++06.html


https://www.cmsnl.com/honda-cb250-nighthawk-1997-v-usa_model7213/partslist/E++13.html

When that cover is off it would be worth while to flush out the sump of all the debris on it.
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nuts about bikes

[BusterGonads]

[Teflon-Mike]

Check you have removed alkl bolts again. The bolyts that hold the bvracket that holds the clutch cable also hold the primary drive cover.. have you removed cablre & bracket?
Leaving trhe bracket and cable and working the clutch lever to pry the casiung against the cluytch 'may' halp loose it off a bit in the direction it gotta come, unlike tapping side-ways witrh rubber mallet.
Otherwide.. OTMH I dont recall an lication dowels or anything in there... so I would guess its just been glued on with gluoopy chit instead of gasket paper.... or both..

Maybe time toe be a bit heavy handed... Two-Fifty dont have a tacho drive on the front of the casing to loose off does it? Probably just time to get Snowie Handed.... if in doubt give it a clout! If still in doubt give it a bigga clout!
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My Webby'Tef's-tQ, loads of stuff about my bikes, my Land-Rovers, and the stuff I do with them!
Current Bikes:'Honda VF1000F' ;'CB750F2N' ;'CB125TD ( 6 3 of em!)'; 'Montesa Cota 248'. Learner FAQ's:= 'U want to Ride a Motorbike! Where Do U start?'

[BusterGonads]

[Robby]

Loosen the bolts, then pull the clutch lever. That usually pops off the cover.

[BusterGonads]

[bikenut]

That's the wonder of woolies cmsnl i mean as the exploded views show bolts, dowels etc. etc. etc. etc.etc...........

The green oe honda gaskets for the clutch covers usually have a heat activated adhesive ( making them glued on and a little difficult to remove ) meaning the gaskets will tear on removal, thus increasing spares profits......notice that your engine has the oil gallery in the clutch cover............being a ball raced engine......even the cam runs in replaceable bushes rather than in the alloy head.

On these engine ( and similar like c90, cb125t etc. cb125s etc. etc. etc. ) always ( ALWAYS ) use a new gasket, do not ( DO NOT ) use a sealer as this may/will block the very important oilway to the crank etc..

If the clutch cover is coming off, then flush out the sump floor......and dont forget to remove all traces of the old glued on torn gasket from the engine and cover .
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nuts about bikes

[BusterGonads]