Toro Reelmaster 5100-D Service Manual page 74

8. Before installing the camshafts and timing gears, turn
the crankshaft to set the No. 1 cylinder to top dead
center (TDC) of the compression stroke. Reverse steps
1 - 5 to install the camshafts and timing gears (Fig. 81).
9. With the crankshaft set to No. 1 cylinder TDC, install
the idle gear so the timing marks on all the gears are in
alignment (Fig. 82).
Cylinder Block Overhaul Page 3 - 58
Figure 81
Figure 82
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Reelmaster 223-D/5100-D