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rwp42
08-27-2008, 02:49 PM
I was reading a motorcycle book that was talking about valves needing regular adjustment -- unless they are 'hydraulic' valves that apparently self-adjust. Can anyone enlighten me on what type of valves the Mana has, and what the service requirements are?

Thanks in advance.

RwP

ritchj
08-27-2008, 03:46 PM
Covered in this thread: http://www.apriliaforum.com/forums/showthread.php?t=155533

rwp42
08-27-2008, 07:42 PM
Thanks for the pointer -- they don't need adjustment until 18K miles, apparently. I'm guessing that "screw and locknut" means they aren't hydraulic?

RwP

Sign Guy
08-27-2008, 08:53 PM
Thanks for the pointer -- they don't need adjustment until 18K miles, apparently. I'm guessing that "screw and locknut" means they aren't hydraulic?

RwP

Ding, ding we have a winner! Yes you are correct. Same type of valve adjustment used on BMW R bikes and air cooled VW engines to name a few. About as easy as valve adjustments get. Takes longer to get access to the valve covers on the Futura than it took to do the entire 6K service on my R1100RT or 3K service on my VW bus! Although, I wouldn't go back to either for my main transportation.

rwp42
08-28-2008, 12:05 AM
Thank you for the additional info -- I am very much a beginner when it comes to the mechanical workings of motorcycles. But at least I am trying to learn.

RwP

pete roper
08-28-2008, 01:40 AM
Useful to note that the Mana motor also runs 'Backwards', ie counterclockwise when viewed from the right of the bike.

As yet I haven't pulled all the false tank munt off to tackle mine as it looks like a PITA and if the manuafacturer says don't bother till 30,000Km I reckon I'm safe for now. I won't leave it that long but another few thousand won't hurt it and will give me a better idea of where they are moving to.

Pete

Micah / AF1 Racing
08-28-2008, 06:44 PM
This is copied from http://www.motorera.com/dictionary/pics/p/pushrodengine1.gif and is a dramatically different engine than in the Mana but shows the basics with labels

http://www.motorera.com/dictionary/pics/p/pushrodengine1.gif

Micah / AF1 Racing
08-28-2008, 06:51 PM
Here is a shim under bucket illustration, though not labeled well, you can see the differences easily enough.

From http://www.freepatentsonline.com/7104229-0-large.jpg

http://www.freepatentsonline.com/7104229-0-large.jpg

rwp42
08-28-2008, 10:56 PM
Wow. Thank you very much for the pics, Micah! Helpful!

RwP