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Old 04-21-2008   #12 (permalink)
polex
New Member
Grand Prix 125
 
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Join Date: Apr 2008
Location: Huntsville (Alabama)
Posts: 22
Unhappy Valve adjustment

Quote:
Originally Posted by jimmyj900 View Post
I've never personally tested the Haynes or FP settings against the Triumph setting so I can't verify whether any of them match up.
I disassembled the carbs and I can say that the TWO setting are coherent.
Using the Triumph method the level was 4mm below joint: 5.5 mm below the standard.
Using the Haynes method the height was 20mm: 5.5 mm higher than the standard.
Now I tuned the level to 14.5mm for all carbs.
I verify that the all part was in stock (Needle N3RF, main 98, pilot 38).
I cleaned the jet using carburetor cleaner spray.

Quote:
Originally Posted by jimmyj900 View Post
IF you have an unmodified air filter box then the stock needles and jets are the best setup for the bike.

IF the filter box has been drilled or replaced with individual pod filters then you'll have to go by the 'proven setups' thread to get the bike running properly.
I have the OEM air box with no holes.
The filter is made by foam, but I don't know if it is OEM.
What is it the pod filter ?

Quote:
Originally Posted by Jacksf View Post
Hi,
You also need to clean out the rust and coat the inside of your tank. A rusty tank will cause all kinds of carb problems. Clean one jet and another will become blocked.
This is the first potential problem which warred me.
I suppose that the rust should clog the gasoline filters before clogging the jet.
But I found the gasoline filters in good condition.


Anyway the trouble are not finished.
The carburetors of the right cylinder is little bit dirty on the engine side, the diaphragm is not in good condition and the corresponding spark plug is black.
I suppose that the inner valve clearance is too close.
Probably I will have to adjust the valve, but I don't have the valve shim removal tool.
I did the valve adjustment on another motorbike having shims under bucket.
Can I use a similar approach for changing the shim above the bucket ?
I mean:
1) remove chain tensioner
2) loose camshaft
3) Change the shims

Have the shims the size printed on them ?

Thank you very much.

You helped me so much.

Sorry for my bad English, I live in USA until 7 months.

Last edited by polex : 04-21-2008 at 09:22 PM. Reason: reply Jacksf
polex is offline   Reply With Quote
 

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