Makita EM4351UH Instruction Manual page 21

Mount the spool in the housing so that the grooves and protrusions on the
spool match up with those in the housing. Keep the side with letters on the
spool visible on the top. Now, unhook the ends of the cord from their temporary
position and feed the cords through the eyelets to come out of the housing.
Align the protrusion on the underside of the cover with the slots of the eyelets.
Then push cover firmly onto the housing to secure it. Make sure the latches fully
spread in the cover.
Replacing the nylon cord (ULTRA AUTO)
1. Put off cover from housing, pressing two cover locking tabs located oppositely
on side of the housing.
2. Take off tab knob and spool from the housing.
3. Put each one end of two cutting lines into each holes at innermost of the slot
on one of spool outer flanges. Put the lines into spool gutters through each
slit on the flanges.
Eyelets
Slot of
eyelet
Cover
locking
tab
Tab knob
Slit
21
Cover
Protrusion
Pull up
Spool
There is a hole
innermost of the slit