classic motorcycle forum

Hello I have a Honda pc50 1972 which seems in good order apart from the carb, could anyone tell me the correct settings for this bike , jets, needle hight, pilot, mixture in out etc . The engine is pushrod. But does have the number PF50E-D on the side.

 My bike is currently running very well however when I pull the clutch in from cold there is a hell of a clunk and sometimes it's stalls the bike when starting off from cold , when the engine is hot I simply place at Tie wrap over the clutch lever to keep the clutch free  and to prevent it from sticking , I know this is not a long-term solution and wonder if there is  something on the market that will alleviate the sticking clutch problem as I am finding it difficult to change gear no matter how I adjust the clutch . I have considered changing the oil  in the primary drive side  to a more slippery oil maybe a semi synthetic .

 The throttle slide on my Mk11 carburettors has the number 2928 imprinted on the bottom and also a number 3,  I am running the correct main jets 200's  and also the correct pilot jets  The machine is even with the throttle stop screw at its lowest setting where it doesn't touch the slider is  running at 1200 rpm and I cannot get it any lower  even when it is at lowest setting where it doesn't touch the slider it's running at 1200 rpm . The pilot air screw is 2 1/2 times out from full in position, the  needle is set in the middle, The only thing I can think of is that the cutout on the slider is too big for standard Road going T140E. I should  also point out that the carb rubbers  are brand-new and the carburettors have only done 200 miles from new .

I dipped my toes into restoring a Triumph T140 a couple of years ago and expected a great parts service from the many expert parts dealers on line and at the shows , however my experience has been far from good , even though the machine is bog standard with matching numbers the amount of wrong or defective parts I have been sent beggars belief I wont go into details because I have just had another episode with a well known parts supplier [now sorted by myself after much hassle] the point I guess I am trying to make is if you see new old stock British parts I would buy them even though they will be more expensive . I am sure that some of this sites members will have had positive dealings with parts dealers but I am afraid that much of the  stuff they sell is [expensive]  poor quality, or just plain crap. Most of us work hard for our money and don't like being short changed, I should point out that I have been restoring bikes for 25 years now and am by no means a novice.

Does anyone have a standard 8 stud barrel for a T140e 76mm, and a cylinder head for sale . cheers.