- Oct 25, 2007
Hi Chaps - I have a 920 Mk2A fitted with a single 36mm Amal Mk2. The bike runs a treat but last weekend whilst out for a ride I noticed that it was not running normally and the idle was unusually high. When I looked at the carb I found that the rubber connector-tube to the manifold was 'sagging' and coming adrift from the manifold and carb body. I did a temporary repair and got home. The engine was bloody hot as it was running so weak. When I then touched the carb the entire rubber tube split and the carb fell off !!. I've bought a replacement tube and will fit it in the next few days. My question is that the last one only lasted about 800 miles - any ideas as to how to make the new one last longer ? One problem is obviously that the entire weight of the carb is supported solely by this rubber/synthetic tube and together with the heat and vibration it gets a hard time.