Adjusting Valve Clearences/Tappets Honda CD250u

89CBRChris · Scooby Slapper Joined: 14 Jul 2004 Karma :

Hi,

I am going to have a go at adjusting the valve clearences on me Honda CD250u and just wanted to ask a little advice.

I have had a good read of me haynes manual and am reasonably confident that I should be ok at doing this, however according to the manual I need to unbolt and remove the head of the engine to get to all the adjuster thingies, you should be able to see from attached pic which bit of the engine I mean. now if I remove the head from the engine it also says to carefully remove the seal and replace if neccesary. Now what I need to know is if you think I will need to replace this seal or just reuse the old one, also if I do need to replace this where do I get one from and are they expensive?

Thanks in advance for any advice.

Chris

Scooby · Scrappy Doo Joined: 26 Mar 2002 Karma :

If you remove the head carefully you can get away with reusing the gasket. Make sure the bike is cold when you check and adjust them, ideally leave it overnight and then do the work before you ride the bike.
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89CBRChris · Scooby Slapper Joined: 14 Jul 2004 Karma :

cool, thanks scooby.

If I make a hash of the removal and screw the gasket, where can I get a new one from and are they easy to get, don't want to screw it up then have a 2 week wait to get a replacement.

oh and will I need a feeler gauge too, if so where do I get one of those (will gerricke sell them?)

Scooby · Scrappy Doo Joined: 26 Mar 2002 Karma :

Should be fairly commonly available for your bike. Can't see you having a problem getting it off if you take your time, unless someones gashed it up before and used a load of silicon or something to seal it. They are quite expensive though, so try not to damage it Smile

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A big enough hammer fixes anything!

swampy · World Chat Champion Joined: 04 Aug 2004 Karma :

You should be able to get a feeler gauge from any tool supplier, even helfords sell them. It might be worth getting a gasket before you start working, then if you screw it up your bike wont be off the road if you have to wait for one to be delivered etc.... Thumbs Up

PS Isn't that bit your taking off the rocker cover ? I thought the 'head' is the cylinder barrel etc only mention it because you need to ask for the right gasket if you do indeed need a new one (I stand to be corrected on that !!)
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89CBRChris · Scooby Slapper Joined: 14 Jul 2004 Karma :

ok cool, i might get one just incase then, I am a bit heavy handed at times and its quite likely i'll bugger it up, i'll have another read of the manual and work out if its head cover/rocker cover etc.

where do you get a new gasket from and what sort of price should I be looking at paying?

mr jamez · World Chat Champion Joined: 04 Aug 2003 Karma :

www.davidsilverspares.co.uk ring them up, they should have it.

Smoto Bob · World Chat Champion Joined: 06 Dec 2003 Karma :

dude thats only the rocker cover mate doesnt even need a gasket really its only to keep crap out and the oil from flying out. it will be fine with out replacing teh gasket

All our xt's have inspection covers so you dont even need to take that off
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89CBRChris · Scooby Slapper Joined: 14 Jul 2004 Karma :

cool no gasket required then Thumbs Up