Valve adjustment on a single cylinder is a little different than a twin. On a single cylinder you find tdc and adjust both valves. You can also check where cylinder is at by using a stick or dowel down the spark plug hole.
On a twin, you need to find tdc on one cylinder and adjust the valve clearance much like a single cylinder. But the second cylinder, you need to go through the same process to find tdc for that cylinder. Then you can adjust the valves once tdc is found.
I usually do .004 intake, .006 exhaust. Intake valve will be closer to the carb, exhaust will be close to the exhaust pipe. Usually a sign you are on tdc, is when the cylinder is all the way up closes to the spark plug hole. But also both valves are loose or have some play. You can usually wiggle them around. If one of the valves are tight, as if it's pushing on a valve. It's not on tdc yet, or it's possible something is wrong like a bent pushrod. Speaking of which, make sure the pushrods are not bent, and they can move freely.
Years ago I had a cx honda that was always notorious for valves. I would adjust those things every 2 months because they were old and would just work loose. They weren't the worse to work on. You had peeper holes you could look at the flywheel and it would say LH or RH. Made finding tdc for each cylinder a little easier.
On a twin, you need to find tdc on one cylinder and adjust the valve clearance much like a single cylinder. But the second cylinder, you need to go through the same process to find tdc for that cylinder. Then you can adjust the valves once tdc is found.
I usually do .004 intake, .006 exhaust. Intake valve will be closer to the carb, exhaust will be close to the exhaust pipe. Usually a sign you are on tdc, is when the cylinder is all the way up closes to the spark plug hole. But also both valves are loose or have some play. You can usually wiggle them around. If one of the valves are tight, as if it's pushing on a valve. It's not on tdc yet, or it's possible something is wrong like a bent pushrod. Speaking of which, make sure the pushrods are not bent, and they can move freely.
Years ago I had a cx honda that was always notorious for valves. I would adjust those things every 2 months because they were old and would just work loose. They weren't the worse to work on. You had peeper holes you could look at the flywheel and it would say LH or RH. Made finding tdc for each cylinder a little easier.
