GeorgeNK

If there is a case of the piston to cylinder has stuck for some reason , an old steam engine mechanic told me about a remedy , and I have used it several times and it does work if there isn't to much rust or corrossion in the cylinder. Here it is mix about equal parts brake fluid with and upper cylinder lubricant such as Marvel Mystery oil . remove spark plugs ,fill cylinders, let sit overnight and then try rocking the crankshaft back and forth. Believe me this has worked.

[email protected] am assembling a Yamaha TT125 engine and in the service manual it shows to line the mark ( I ) on the crankshaft rotor with the pointer on the case , and also with the camshaft marks in line on the cylinder head. My question is on the rotor there are two more II marks just past the single I mark . These two marks are closer to TDC than the single I mark , just a bit confused which do I use ? Thanks George