Re: Motobecane 1979 50v won't start

Bort Hoff /
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The "required" dealer tools to set the motobecane timing are:

piston stop

timing tool(screws into the head and shows you piston position)

magneto wrench

cam puller

A piston stop can be replaced by using a strap wrench, or oil filter wrench on the flywheel.

the magneto wrench is basically a 3/8" drive. use an equivalent socket. The bolt is left hand threaded, so righty-loosey lefty-tightey.

The cam puller can be replaced with a two-arm gear puller from pep boys. i actually prefer thi to the proper tool.

The timing tool just shows you where 2mm BTDC is, so if you justs stick a thin rod, like an allen wrench for example, in the the spark hole, you can find TDC that way. Then get a tape measure and back the rod down 2mm into the cylinder. Then take the cam and replace it so two holes are at twevle and six, and the third hole is at about eleven o'clock. then tap it in with a mallet.hammer/crescent wrench/little brother/etc.

When your done, the points should open when the holes are at 12 and six.

When you bolt the magneto cover back on, make sure the holes line up with the nubs on the inside of the cover.

And that's it.

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