Toro 51978 - Installing Easy-Load String Head

22
Figure 20
Straight Shaft
Curved Shaft
Cover
Latches
Knob
Hex Bolt
Spool
Spring
String Head
Latch
Opening
Installing Easy-Load String Head
See Figures 20 - 21.
Stop the engine and disconnect the spark plug wire.
Open the Easy-Load string head by depressing the
latches on each side. The contents of the string head are
spring loaded, so keep your other hand over the string
head cover while depressing the latches.
Remove the string head cover, knob, and spool and set
aside.
Place the upper housing on the drive shaft. Make sure
the string head is fully seated.
Install the hex bolt into the opening on the drive shaft
and secure using the hex-shaped opening in the knob to
tighten. Turn clockwise for curved shaft and counter-
clockwise for straight shaft to tighten.
Note: Only use the knob to tighten the bolt. The use of
other tools may allow overtightening of the bolt, which
could damage the string head.
If removed, replace the spring into the string head and
push down to seat.
Reinstall the spool. For the 51958, the spool should
be placed so “This side out for curved shaft” is visible.
For the 51978 or 51978A, the spool should be placed so
“This side out for straight shaft” is visible.
Replace the knob in the spool.
Replace the string head cover, aligning latches with
openings in the string head. Press cover and string head
together until both latches snap into openings securely.
Install line as described in the operation section of this
manual.
Figure 21
Hex-Shaped
Opening
Knob
Hex Bolt
Maintenance