classic motorcycle forum

Use a hair dryer to loosen the rubbers (expansion) that will work .

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.

 Just as a matter of interest I have purchased an endoscope from eBay for £7 it fits directly onto your phone has a magnet attachment periscope attachment and also various other tools this particular one is waterproof too. 7mm Dia smaller ones are available for the same cost.

 Yes I have but of course you need the applicator as well and the cutting tool. I may have to open the wallet !

Many years ago a friend of mine (claimed) he had his old Bonneville spark plug thread drilled  out and heli coiled with the head still attached to the barrel, by pushing a greased length of cloth( to catch the swarf)into the combustion chamber (though the spark plug hole) it was drilled to the correct size then  heli coiled, the tang was somehow removed then job done, is this really possible because mine needs doing on the left pot.The bike was running really well, I wish I had left it be!

 The issue is when I actually engage the gearlever for the first time from cold as soon as the gear lever is depressed the bike lurches forward and cuts out however once I start the machine again  The initial clunk disappears as if the plates have now separated . The action of the clutch and clutch cable is quite smooth if a little heavy by modern standards.  On longer journeys even when the engine is hot changing gear is still quite a  chore  because of the notchy gear lever action .

 A Honda CB125 in 1977,I wanted a bike a year earlier but my dad would not sign the guarantors form at the bank so  during the fantastic summer of 1976 all that I could do was listen to my mates on their fizzys, Tiger crosses , SS 50s ,and believe it or not one of the lads had a Puch Maxi, The Honda 125 was a great little bike I bought a  megaphone silencer and put crash bars on it and two extra brake lights on the back !Plus not forgetting the day glow orange headlight cover! Then all of a sudden we got into the Yamaha RD250's,  we were always down at Granby motors at Ilkeston finding all the little  bits of tat that we could afford .

The  charging circuit  is only making 12.8 volts on my T140  Bonneville at the battery  terminals at about 4000 rpm and as soon as I switch the lights on the engine dies  i've checked the Earth terminals and I all seems well there the only thing I can think of is the alternator is faulty or there is a problem with the  rectifier , because this bike is a change over model there doesn't seem to be any suitable wiring  diagrams in the manuals , The bike is fitted with its original rectifier  and original Zena, are only two wires coming up from the alternator a green yellow and a green white if anyone has any ideas I will be grateful . Otherwise the five runs  really well . The bike has a positive earth.