Cleaning The Engine - Troy-Bilt 170-T0A Manual Del Operador

WARNING!
muffler will be very hot. Be careful not to touch the
muffler.
2. Visually inspect the spark plug. Discard the spark plug
if there is apparent wear, or if the insulator is cracked or
chipped. Clean the spark plug with a wire brush if it is to be
reused.
3. Measure the plug gap with a feeler gauge. Correct as
necessary by bending side electrode. See Fig. 6-4. The gap
should be set to 0.030 in.
Electrode
0.02-0.03 in.
0.60-0.80 mm
4. Check that the spark plug washer is in good condition
and thread the spark plug in by hand to prevent cross-
threading.
5. After the spark plug is seated, tighten with a spark plug
wrench to compress the washer.
NOTE: When installing a new spark plug, tighten 1⁄2 turn
after the spark plug seats to compress the washer. When
reinstalling a used spark plug, tighten 1⁄8-1⁄4 turn after the
spark plug seats to compress the washer.
NOTE: The spark plug must be securely tightened. An
improperly tightened spark plug can become very hot and
may damage the engine.
12 s 6— M
EctiOn aintEnancE
If the engine has been running, the
Figure 6-4

Cleaning the Engine

If the engine has been running, allow it to cool for at least half
an hour before cleaning. Periodically remove dirt build-up from
the engine. Clean around the muffler. Clean with a brush or
compressed air.
NOTE: Do not spray engine with water to clean because water
could contaminate fuel. Using a garden hose or pressure washing
equipment can also force water into the air cleaner or muffler
opening. Water in the air cleaner will soak the paper element,
and water that passes through the element or muffler can enter
the cylinder, causing damage.
WARNING!
Accumulation of debris around muffler
could cause a fire. Inspect and clean before every
use.