Minolta Di551 Service Manual page 280

(7) Secure the end of a new up/down wire to the wire
end of the up/down pulley/L. Wind the wire tightly
around the up/down pulley/L approx. 5 turns from
inside to outside. Insert the pulley/L into the shaft
so that the slots on the pulley/L align with the lock
pin on the shaft.
Up/down pulley/L
Inside
Outside
(5 turns)
(8) Hook the up/down wire around the up/down pul-
ley/U. Wind the wire tightly around the up/down
pulley/L 2 turns from inside to outside. Secure
the end of the wire to another wire end (outside)
of the up/down pulley/L.
Up/down pulley/U
Wire end
(2 turns)
Up/down pulley/L
Look pin
Wire end
1-R-11
(9) Insert the pin into the hole in the shaft. Put the
gear into the shaft and fix the gear with the E-
ring.
Pin
Gear
E-ring
(10) Use a tension gauge or a spring balance to pull
the belt tensioner upward at a specified level of
force, A, and tighten the securing screws.
Specified force: A = 2.5 ± 0.25 kg
A = 2.5 ± 0.25 kg
Belt tensioner
FN-6 / FN-112
Screws