Air Filter - Troy-Bilt 208cc FLEX Operator's Manual

WARNING!
If the engine has been running, the
muffler, engine head and spark plug will be very hot.
Be careful not to touch any of these components
until they have cooled.
Spark Plug Service
WARNING!
DO NOT check for spark with spark
plug removed. DO NOT crank the engine with the
spark plug removed.
Check the spark plug yearly or every 100 operating hours. To
ensure proper engine operation, the spark plug must be properly
gapped and free of deposits.
1. Remove the spark plug boot.
2. Clean the area around the spark plug.
3. Use a spark plug wrench to remove the plug.
WARNING!
If the engine has been running, the
muffler, engine head and spark plug will be very hot.
Be careful not to touch any of these components
until they have cooled.
4. Visually inspect the spark plug. Discard the spark plug
if there is apparent wear, or if the insulator is cracked or
chipped. Replace the plug if the electrodes are pitted,
burned or fouled with deposits.
5. Clean the spark plug with a wire brush if it is to be reused.
6. Measure the plug gap with a feeler gauge. Correct gap as
necessary by bending the side electrode. See Figure 6-4.
The gap should be set to 0.030 in. (0.76mm).
7. Check that the spark plug washer is in good condition
8. Thread the spark plug in by hand to prevent cross-
threading.
9. 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.
Electrode
0.06-0.03 in.
0.60-0.80 mm
Figure 6-4

Air Filter

To service the air filter, follow the instructions below:
Note: Paper filters cannot be cleaned and must be replaced
once a year or every 100 operating hours; more often if used in
extremely dusty conditions.
WARNING!
Never use gasoline or low flash point
solvents for cleaning the air cleaner element. A fire
or explosion could result.
NOTE: Never run the engine without the air filter present. Rapid
engine wear can result.
1. Using a Phillips head screw driver, remove the top engine
cover by removing the two SEMS screws located on the
rear of the cover. See Figure 6-6.
Figure 6-5
2. Pivot the cover forward(1) and lift up and away(2) from the
power base, disengaging the two mounting tabs on the
front of the engine cover. See Figure 6-6.
Figure 6-6
1
2
S 6 — M
ection aintenance
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