Oil is coming out of the vacuum line just above the front sprocket on my Apollo DB 125cc pit bike

SOURCE: 1995 dodge ram 1500 4wd, vacuum line

you sure its not the breather tube for the t-case. about 3/8 hose if it is. the vacuum lines for the 4x4 are small plastic lines. red, blue, yellow, etc. think there are four of them

SOURCE: timing chain 110 hymoto pit bike

Put the piston at TDC (Top Dead Center) by lining up the timing marks on the flywheel and stator. Put the cylinder head back together with the cam installed so the high points of the cam lobes are pointing kind of downward. Pull the cam chain taught on the front side of the engine. Put the chain on the cam gear such that, when bolted to the cam, the index mark or marks are in the proper position.

The proper position depends on what markings are on the cam. Some bikes have a single mark; an arrow, a straight line or an "O". The mark should line up with the center-line of the crankshaft. If the cam has two marks opposite each other, the lines should be parallel with the gasket surface. You will need to rotate the unbolted cam left or right just a bit in order to match up the bolt holes to the gear holes.

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SOURCE: atomic 125cc pit bike oil screen?

the oil filter is above the oil plug, you have to remove the clutch cover etc.. its just a piece of fine wire mesh

SOURCE: 125cc pit bike no spark need help at witts end.

remove the alternater cover and check all the wires are intact behind there

SOURCE: timing chain 110 hymoto pit bike

you have to put the piston at the top and the sprocket and crank at the bottom hope this helped