Troy-Bilt 13027 - Manual (Page 25)

Fuel Filter Service
Your engine may be equipped
with an in-line fuel filter placed in
the fuel line between the gas tank
and the carburetor. Visually in­
spect the fuel filter periodically
(every 100 hours or once a year)
and replace when dirty. The filter
is a throw-away type.
Carburetor
The carburetor is adjusted at the
factory and should not have to be
readjusted. If any black exhaust is
noticed, check the air cleaner com­
ponents first. An overly “rich”
mixture is usually caused by a
poorly serviced, clogged air
cleaner element, not by an improp­
erly adjusted carburetor.
Clean the Air Cooling System
Grass, chaff, and dirt may clog
the rotating screen in the blower
housing, and work underneath the
blower housing, especially after
prolonged service cutting dry
grasses. It is recommended that
the screen (see Figure 5-7) be
cleaned off regularly, and the
blower housing be removed every
100 operating hours (or each sea­
son) to clean out any debris that
has collected around the cooling
fins and flywheel. Your engine is
air cooled only, so keeping it free
of debris allows it to run at lower
temperatures.
ignition System
Your engine has a dependable,
electronic ignition system.
Beyond periodically checking/re-
placing the spark plug, there are
no other maintenance, timing or
other types of adjustments needed.
Spark Plug
Every 100 hours of operation,
remove the spark plug, check its
condition, and either reset the gap
WARNING
Before performing any main­
tenance on the tractor or the
engine, the tractor must be
stopped, the PTO switch shut
Off, the Parking Brake en­
gaged, the engine stopped
and the key removed, and the
spark plug wire must be dis­
connected
and kept away
from the plug. Always let en­
gine and muffler cool down.
Failure to comply can result
in serious personal injury or
property damage.
Figure 5-7: The rotating screen on
top of your engine must be kept
free of ait debris. Ctean it off regu-
tariy so the engine runs cooter.
or replace the plug as necessary.
See your engine manufacturer
literature for spark plug gap set­
tings and recommended spark
plugs. Good operating conditions
are present when the plug has a
light coating of a gray or tan de­
posit. A black coating may indi­
cate an over-rich fuel mixture
(caused by either a clogged air
cleaner or improper carburetor ad­
justment.) A badly worn plug
should be replaced with a new one.
NOTE: Do Not Sandblast Spark
Plugs to clean them. Remaining
grit on the plug could enter the
engine causing extensive wear
and damage.
Battery Care
When servicing the battery, be
sure the battery cables are discon­
nected before you remove the bat­
tery from the tractor. Always dis­
connect the negative (-) cable first.
When installing the battery, always
check the polarity of the battery
terminals to be sure you will be
connecting the positive cable to
the positive terminal, and the nega­
tive cable to the negative terminal.
Apply a light coating of
petroleum jelly or oil to the inside
of the clamp terminals and over
the bolt studs before connecting
the cables. Always re-connect the
negative cable last.
WARNING
Electric storage batteries
give off highly flammable gas
while charging, and continue
to do so for some time after
receiving a steady charge.
Do not permit any electric
spark or an open flame near
the battery. Do not set tools
across the battery terminals
as this may result in a spark
or short circuit and cause an
explosion. Be very careful to
avoid contact with battery
electrolyte—it can burn skin
and clothing.
Diode Rectifier
or Voltage Regulator
The 12HP Briggs engine has a
diode assembly in the wiring har­
ness at the dash console. The
diode changes alternating current
(AC) from the alternator to direct
current (DC ) to charge the battery.
See the wiring diagram in the Parts
Catalog. On other engines, a volt­
age regulator is featured.
Fuse
A fuse is located in the wiring
harness at the dash console.
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