Question
1972 cb175 K5
I have a 1972 cb175 (k5) ,type 2engine.. the kind with only one set on points. Runs real strong, a beauty w/ only 5000miles on it. Recently I started to experience some cam chain noise. I'm going to make the cam chain adjustment according to the procedure in my original shop manual (green binder) but was wondering if engine tempertaure has any bearing on the adjustmet?.. More clearly, does it matter if the engine is hot or cold when I make the cam chain adjustment, is there a recomeded method?
If the noise I'm hearing does not cease after I make the cam chain adjustment, I'm moving on to check the tappet clearances, which leads me to part two of my question.
When making the tappet adjustmets, I understand I need to position the piston at top dead center(TDC) by aligning the T mark to the line on the stator. Once I've determined which piston is at TDC and go to make the adjustments, do I adjust both intake and exhaust valves on that same cylinder before moving onto the other? Does it matter if I adjust the intake or exhaust valve 1st?
Is there a correct order of opperations to which tappets gets adjusted ?
Lastly, is it really necessary to remove the fuel tank when making the tappet adjustments, or just recomended for more working room? Should I check the clearances, and then if they need adjusting, remove the tank?
Any advice you have is greatly appreciated. I'm a rookie at mcycle mechanics but have been studying my green binder/original Honda175 shop manual and a book called Glenn's Honda 2cylinder repair and tune up guide. I feel I have a good understanding but still need some reassurance/ guidance and therefore smiling that I have found this forum.
Thanks - James
AnswerNice bike...a 69 CB 160 was my first bike.
The cam chain is adjusted easiest when cold but it really doesn't matter. Taking the tank off just gives you more room. If you have really small hands or if you can get your wife or girlfriend to do it...that would be better ;o). You might be able to prop up the back of the tank and get the room you need. Just be warned...sometimes I've busted the balance fuel hose just propping up the tank.
It doesn't matter which valve is adjusted first. Sounds like you've got it well in hand.
Regards
Rich
