Hyd-Mech DM-1215, Use And Maintenance Manual

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Use and maintenance manual DM-1215
Rotation axis control
Pulleys must be adjusted in their coplanarity. The adjustment is aimed at ensuring
the belt rotation, keeping approx. 4 mm of distance from the point of the belt
teeth to the pulley machined surface. This prevents an early wear of the belt.
Slacken the blade tension and open the cutting head cover;
slacken the grub screw and, using a mallet, tap the shaft in or out;
finally, close the cover and set the blade in motion;
check the distance, as shown in the picture;
4 mm
if necessary, repeat the operation till getting the correct position.
Rear flywheel alignment is closely linked to adjustment of the front flywheel.
Adjust by loosening all pulley locking screws and moving the pulley manually
inwards or outwards according to the distance of the blade from the pulley
machined surface. Tighten the screws again and check the coplanarity making
the belt turn a few times.