Clean Air Intake/Cooling Areas; Check Spark Plug Gap And Condition; Changing Hydraulic Oil And Filter - Toro 44044 Operator's Manual

6. When servicing air cleaner, check the air cleaner base.
Make sure it is secured and not bent or damaged. Check
element cover for damage or improper fit. Replace all
damaged air cleaner components.
Note: Before reassembling air cleaner make sure rubber
seal is in position around stud. Inspect and make sure it is
not damaged. Seal with the element cover.
7. Reinstall the air cleaner paper element, precleaner,
element cover, element cover nut, and air cleaner cover.
Secure cover with retaining knob.

Clean Air Intake/Cooling Areas

To ensure proper cooling, chuck and clean grass screen,
cooling fins, and other external surfaces of the engine daily.
Every 100 hours of operation (more often under extremely
dusty or dirty conditions), remove the blower housing and
other cooling shrouds. Clean the cooling fins and external
surfaces as necessary. Make sure the cooling shrouds are
reinstalled.
Important Operating the engine with a blocked grass
screen, dirty or plugged cooling fins, and/or cooling
shrouds removed will cause damage due to overheating.
Check Spark Plug Gap and
Condition
Air gap between center and side electrodes of the spark
plug increases gradually during normal operation of the
engine. Check condition of electrodes after 200 hours of
operation. Recommended air gap is 0.030 in. (0.76 mm).

Changing Hydraulic Oil And Filter

The hydraulic oil must be changed yearly. The hydraulic oil
filter must be changed initially at 50 hours, and thereafter
yearly. The hydraulic oil and/or filter must also be changed
if hydraulic vacuum gauge reads, and stays, in the red zone.
The hydraulic system is designed to operate on Mobil
DTE 13M or equivalent ISO VG 32 wide–temperature,
shear–stable hydraulic fluid with controlled
Recommended Oil
Mobil DTE 13M or equivalent ISO VG 32
Mobil DTE 26 or equivalent ISO VG 68
Important
malfunctioning spark plug must be replaced. Do not sand
blast, scrape, or clean electrodes by using a wire brush
because grit may eventually release from the plug and fall
into the cylinder. The result is usually a damaged engine.
1. Turn engine off, set parking brake, and remove key
from ignition switch.
2. Before removing spark plug, clean the area around the
base of the plug to keep dirt and debris out of the
engine.
3. Remove plug and check condition of side and center
electrodes, and center insulator to assure there is no
damage. Replace plug if worn or if reuse is
questionable.
4. Check the gap using a wire feeler gauge. Adjust the gap
between center and side electrodes to 0.030 in,
(0.76mm) by carefully bending the ground electrode.
5. Reinstall spark plug into the cylinder head. Torque
spark plug to 18–22 ft. lb.
6. Replace high tension leads onto spark plugs.
low–temperature flow properties and anti– wear protection.
The reservoir is filled at the factory with approximately 28
quarts of Mobil DTE 13M hydraulic fluid. Hydraulic oil
viscosity (weight) must be selected according to average
anticipated ambient temperature. Temperature/viscosity
recommendations are as follows:
Expected Ambient Temperatures
Start–Up
Less than 40_ F–50_ F
(4.5_ C–10_ C)
Greater than 60_ F–70_ F
(15.5_ C–21_ C)
23
0.030 in (0.76mm)
Figure 21
A cracked, fouled, dirty, or otherwise
Average Daily Temperature
Less than 80_ F (26.7_ C)
Greater than 80_ F (26.7_ C)