Toro 51954 Manual Del Operador página 22

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 51954, the spool should be

placed so "This side out for curved shaft" is visible. For
the 51974, 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.
Emissions Maintenance Schedule
Maintenance, replacement, or repair of the emission control device and systems may be performed by any non-
road engine repair establishment or individual.
Emission Part
Fuel Tank Assembly (Includes Fuel
Lines, Fuel Cap, and Fuel Filter)
Air Filter
Spark Arrester
Spark Plug
Muffler
High Altitude Engine Operation:
Please have an authorized service center modify this engine if it is to be run above 2000 feet. Failure to do so may
result in poor engine performance, spark plug fouling, hard starting, and increased emissions. Carburetor modifi-
cation by an authorized service center will improve performance and allow that this engine meet the EPA (Envi-
ronmental Protection Agency) and California ARB (Air Resources Board) emission standards. An engine modified
for high altitudes can not be run at 2000 feet or lower. In doing so, the engine will overheat and cause serious
engine damage. Please have an authorized service center restore high altitude modified engines to the original fac-
tory specification before operating below 2000 feet.
22
Inspect
before
Clean every
each use
5 hours
X
X
Hex-Shaped
Opening
Clean every
Replace every
25 hours
25 hours
or yearly
or yearly
X
X
X
Knob
Hex Bolt
Figure 21
Replace
every
125 hours
X
Maintenance