Change The Hydraulic System Filter; Servicing The Spark Plug - Toro 74812 Operator's Manual

Change the Hydraulic
System Filter
Service the hydraulic system filter after the
first 200 hours of operation.
NOTE: Use only MOBIL 1 15W-50 Synthetic
motor oil.
1. Stop engine, wait for all moving parts to
stop, and allow engine to cool. Remove
key and engage parking brake.
2. Locate the two (2) filters under the
transmissions. Remove filter guards.
3. Carefully clean area around filters. It is
important that no dirt or contamination
enter hydraulic system.
4. Unscrew filters to remove and allow oil to
drain from drive system.
IMPORTANT: Before reinstalling new filters,
apply a thin coat of oil on the surface of the
filters rubber seal.
Turn the filters clockwise until rubber seal
contacts the filter adapter then tighten the
filter an additional 3/4 to 1 full turn.
4. Remove the vent plug on each
transmission and fill through expansion
reservoir, when oil comes out of vent
reinstall plug. Torque plugs to 180 in-lbs
(244 N-m). Continue to add oil until it
reaches the FULL COLD line on the
expansion reservoir.
Figure 28
1. Vent Plug
2. Oil filter
3. Left rear tire
5. Raise the rear of machine up and support
with jack stands (or equivalent support)
just high enough to allow drive wheels to
turn freely.
6. Start engine and move throttle control
ahead to 1/2 throttle position. Disengage
parking brake.
a) With the bypass valve open and the
engine running, slowly move the
directional control in both forward and
reverse (5 or 6 times).
b) With the bypass valve closed and the
engine running, slowly move the
directional control in both forward and
reverse directions (5 to 6 times).
Check the oil level, and add oil as
required after stopping the engine.
c) It may be necessary to repeat Steps a)
and b) until all the air is completely
purged from the system. When the
transaxle operates at normal noise
levels and moves smoothly forward
and reverse at normal speeds, then
the transaxle is considered purged.
DO NOT change hydraulic system oil (except
for what can be drained when changing filter),
unless it is felt the oil has been contaminated
or been extremely hot.
Changing oil unnecessarily could damage
hydraulic system by introducing contaminates
into the system.

Servicing the Spark Plug

Every 2 years or 200 hours of operation,
remove the spark plug, check condition, and
reset the gap or replace with a new plug as
necessary. The spark plug is RFI compliant.
Equivalent alternate brand plugs can also be
used. Spark plug replacement is
recommended at 500 hours.
Type: Champion XC92YC
Champion RC1ZYC or QC12C may be
used if your area does not require
compliance with Canadian ICES-002,
ISO 14982, or EN 55012.
Air Gap: 0.030 inch (0.76 mm)
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