Hi Niels - Welcome to the nut-house. DETENT SPRING sounds the probable cause, though assume the worst and plan to do more when you open up the engine.
As you will need to remove the radiator - I'd suggest replacing all the radiator hoses (Samco Sport in my case).
If the engine has done a good number of kms - I'd consider replacing the clutch plates.
Also check the lifter piece and arm - they are almost certainly worn.
Hi Niels - Welcome to the nut-house. DETENT SPRING sounds the probable cause, though assume the worst and plan to do more when you open up the engine.
As you will need to remove the radiator - I'd suggest replacing all the radiator hoses (Samco Sport in my case).
If the engine has done a good number of kms - I'd consider replacing the clutch plates.
Also check the lifter piece and arm - they are almost certainly worn.
That's low enough to expect less wear. But the hoses for example are now 10 years old. 10 year old rubber that suffers heat cycles - I'd replace.
I was surprised how reasonable the Triumph OEM parts bill was. When you have pictures of the Clutch lifter and arm - just post them - and we can identify if it is the upgraded one - if it is not, then I'd replace it anyway.
Hi all. Problem solved! The bike has to be reassembled again but when opening it the mechanic found a broken detent spring. As stated in my other thread good to have forums like this around. Thanks all for the advice.