Timing cover tool for GL1200 is a special wrench to fit the hard to reach bolts of the timing cover to avoid removing the radiator. One end of the wrench is for breaking loose and tightening the bolt and the other end is for spinning off the bolt after loosening. 

TIP FOR REMOVAL:

THE STEEL TIMING COVER ALLEN BOLTS MAY BE LIGHTLY
CORRODED INTO PLACE IN THE CAST ALLOY TIMING COVERS.

PLACE THE LONG END OF THE ALLEN TIPPED TOOL INTO EACH
BOLT, AND VERY GENTLY APPLY PRESSURE. IF IT RESISTS, AND WILL
NOT MOVE, GIVE THE JAMMED BOLT A SOAKING WITH REGULAR
SUGAR TYPE COCA COLA. IT SOMETIMES TAKES A BIT OF SOAKING
TO FREE THEM UP.

THE CARBONIC ACID PRESENT IN COKE ALONG WITH ITS SUGAR
FORMULA MAKES A GREAT IRON OXIDE REDUCER (RUST REMOVER)

OTHERWISE, YOU MIGHT BUST THE TOOL TIP OFF IF YOU APPLY TOO
MUCH PRESSURE.  AS ONE CAN SEE, THERE IS NOT TOO MUCH
ROOM TO PUT A MEATY GLOB OF WELD ON A SMALL TOOL
THAT HAS TO GO INTO SUCH A TIGHT PLACE.