Service Manual
GTS
150
MAINTENANCE
Servicing
Air
Cleaner
Normally, clean the air cleaner after every
25
operating
hours. More frequent cleaning is required when the mower
is operated in dusty or dirty conditions.
1. Stop the engine, allow
it
to cool and disconnect the
spark plug wire. Remove the key from the key switch
on electric start models.
2.
Rotate the knob securing the air cleaner cover to the
engine until the cover can be removed. Clean the
cover thoroughly. See Figure 1.
Figure
1
3.
If the outside of the foam element is dirty, remove it
from the air cleaner body and clean it thoroughly. See
Figure
1.
A.
Wash the foam element in a solution of liquid soap
and warm water. Squeeze the element to remove
dirt, but do not twist as the foam may tear. Rinse
thoroughly in clear water.
6.
Dry the element by wrapping
it
in
a clean rag.
Squeeze the rag and
foam
element to dry.
C. Saturate the element with
5
teaspoons
(25
ml) of
SAE
1
OW
30
engine oil. Squeeze the element to
remove excess oil and to distribute the oil thor-
oughly.
A
damp element is desirable.
4.
Reinstall the foam element and air cleaner cover. Do
not operate the engine without the air cleaner element
as extreme engine wear and damage will likely result.
A.
Paper elements are available for use in extremely
dirty conditions. Toro part number 77-901
0.
Replacing the Spark Plug
Use a Champion RC12YC spark plug or equivalent. The
correct air gap is
.030"
(.76mm). Remove the plug after
every
25
operating hours and check its condition.
1.
Stop the engine, allow it to cool and disconnect the
spark plug wire. See Figure
2.
Remove the key from
the switch on electric start models.
1.
Static Gard
5.
Model,
Type
and
2.
Air Cleaner Code Numbers
3.
Carburetor
6.
Muffler
4.
Spark
Plug
7.
Muffler Guard
2.
Clean around the spark plug and use a
518"
socket to
remove the plug from the cylinder head. Replace a
cracked, fouled, or dirty spark plug. Do not sand blast,
scrape, or clean electrodes as engine damage could
result from grit entering the cylinder.
3.
Set the air gap at
.030"
(0.76 mm)
,
See Figure
3.
Install
the correctly gapped spark plug and gasket seal.
Tighten the plug to
14
ft Ibs (1
9
N-m)
(.76MM)
1
Figure
3
GTS
150
15
Maintenance