Troy-Bilt 12069-7HP - Manual (Page 57)

Your engine is equipped with a
dual element air cleaner that filters
the air twice before it enters the
carburetor to mix with the fuel.
The outer foam pre-cleaner filters
the air first; then the inner paper
element filters the air again.
It is very important that the fil­
ters be kept clean and properly in­
stalled at all times. See the air fil­
ter system on your engine by refer­
ring to Figure 5-39 or Photo 5-40.
Refer to the engine manufac­
turer literature supplied with your
AIR CLEANER MAINTENANCE
THROTTLE CABLE
MAINTENANCE
WARNING
To help avoid personal injury,
stop the engine, wait for all
moving parts to come to a
complete stop,remove the
electric start key, disconnect
the spark plug wire and move
the wire away from the spark
piug, and let the engine and
muffler cool before adjusting
the throttle cable.
tiller for complete service and
maintenance information for the
air cleaner on your engine.
Figure 5-39: Air cleaner on the 7HP
Briggs & Stratton engine.
The throttle lever settings are
factory-adjusted, so unnecessary
adjustments should not be made.
However, if the engine does not
start or stop, or respond immedi­
ately to various throttle lever set­
tings, then adjustments may be
necessary. Please refer to the en­
gine manufacturer literature sup­
plied with your tiller for specific
adjustment instructions.
Of course, you may contact
your nearest authorized engine ser­
vice dealer for throttle cable ad­
Photo 5-40: Foam filter on the 8HP
Kohler engine.
justments by a qualified service
representative.
IGNITION SYSTEM
MAINTENANCE
Your engine is equipped with
electronic ignition. It does not
have a condenser or points, so
there is no need to perform any
regular “tune-up” maintenance on
this system other than adjusting or
replacing the spark plug.
SPARK PLUG
MAINTENANCE
The spark plug (see Figure 5-41
or 5-42) must be in good condition
for proper engine operation. Re­
move and inspect the plug every
50 operating hours or annually,
whichever occurs first.
The correct electrode gap for the
Briggs & Stratton engine is .030"
and for the Kohler engine .025".
Check the gap with a feeler gauge.
Do not use a spark plug if the
porcelain is cracked, the electrodes
are pitted or burned, or other visi­
ble damage is present. Note: Do
not wire brush or sand blast spark
plug to clean it - loose particles
can enter engine, causing damage!
Figure 5-41: Sparkplug (with boot
on) on the 7HP Briggs & Stratton
engine.
To replace the plug, first tighten
it securely by hand, then use a
spark plug wrench to tighten the
plug an extra 1/4 turn.
Photo 5-42: Spark plug on the 8HP
Kohler engine.
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