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Valve clearance check at 32k miles

Road Hog

2014
CBR650F ABS
May 4, 2017
Thailand
Brammers, Seeing that you did your valve check over 50,000km did you change your spark plugs at 24,000km?
Also are you still riding on stock battery?
 

Brammers

2014
CBR650F ABS
Staff
May 30, 2014
Hampshire, England
All checks are on schedule as per manual. Plugs have been changed as per schedule with iridium ones (16/32k miles)

My original battery was tired (but just ok), however I swapped that for a yuasa the other week to be safe - it did 5 years.

J
 

Brammers

2014
CBR650F ABS
Staff
May 30, 2014
Hampshire, England
All back together today. Bit of advice... Mark the timing chain and sprockets with a sharpie before you remove the camshafts.

It would have taken some guesswork out of the reassembly process. The marks Honda use don't line up until the camshafts are fastened fully down.

But all is good... Only 0.01mm or less out of spec now on all valves.

She fired first time and purred like a kitten.

J
 

Daniel

2014
CB650F ABS
Feb 15, 2015
Brammers, did you find you needed to change the cylinder head cover packing or was there no need?

I'm just getting some bits together for my check which is due soon. Took a while to find a feeler gauge that goes down to 0.03mm, three bond sealant is next on my list.

Also, I could do with the photo of the frankenstein like tool you had to create to remove the spark plugs! What socket size are they out of interest?
 
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Brammers

2014
CBR650F ABS
Staff
May 30, 2014
Hampshire, England
Good luck on the threebond... I have a massive tube of it.

The packing is reusable... Top tip : use some threebond to stick it to the rocker cover for easy reassembly.

I'll have to dig out the tool pic lol
 

Daniel

2014
CB650F ABS
Feb 15, 2015
Nice! That's great, I have all those bits so should be able to get them out. Thanks for the help 👍
 

Daniel

2014
CB650F ABS
Feb 15, 2015
So I tackled this last night, although a 16k check instead. After 16k miles my clearances are:

11223344
EX0.280.290.290.290.300.300.300.28
IN0.180.200.180.180.190.180.200.20

So I would expect some exhaust valve shims in another 16k. It was good fun to be honest, I've never done it before but managed it alone quite comfortably with the service manual at my side and a cup of coffee. Getting the feeler gauges under the exhaust cams was fiddly though.

I can't remember who said to use the spark plug cap to pull them up and out but whoever it was, I'm glad you posted it here because I had a moment where I had no idea how to get them out haha, they should really add that tip to the manual. It was also very easy to undo them once the head cover had been removed, all I needed was a ratchet, 3/8" extension and a 40mm deep 16mm socket for all 4. Since the clearance check and spark plug services coincide I would strongly recommend doing just that, swap plugs after the head cover has been removed.

I've had a buzz coming from this area for about 2k miles I put down to pair valves coming a little loose. So I removed them too, cleaned up the plates, reed valves, mating surfaces and applied a little TB5211C before tightening them back up. Re-assembly later tonight 👍

20200924_122327.jpg20200924_122852.jpg20200923_231426.jpg20200923_231432.jpg
 

Danielegenovesi76

2018
CB650F ABS
Aug 8, 2020
Riding Since
1996
There is a way to use a wrench straight to remove the spark plugs?? without making the tool who brammers did........I have rachet I use to remove spark plugs on my fiesta should be same size right? Next motorcycle buy electric one 😆 🤣 😂
 

JDude

2020
CB650R ABS
May 20, 2020
Ottawa
Riding Since
1979
Don’t worry when everyone goes electric a solar flare will take out the grid and we’ll all be looking for a diesel Royal Enfield.
 

Danielegenovesi76

2018
CB650F ABS
Aug 8, 2020
Riding Since
1996
Oh no I was joking about electric because like the tesla its maintenance free no oil change no spark plugs no valve adjustment just battery........
 
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