HONDA GCV190 - Manual (Page 8)

8 ENGLISH
SPARK PLUG
Recommended Spark Plug:
The recommended spark plug is the correct heat range for normal
engine operating temperatures.
NOTICE
Incorrect spark plugs can cause engine damage.
For good performance, the spark
plug must be properly gapped and
free of deposits.
1. Disconnect the cap from the
spark plug, and remove any dirt
from the spark plug area.
2. Use a 13/16" spark plug wrench
to remove the spark plug.
3. Inspect the spark plug. Replace it if damaged, badly fouled, if the
sealing washer is in poor condition, or if the electrode is worn.
4. Measure the electrode gap with a
suitable gauge. The correct gap is
0.70 ~ 0.80 mm (0.028 ~ 0.031 in).
If adjustment is needed, correct the
gap by carefully bending the side
electrode.
5. Install the spark plug carefully, by
hand, to avoid cross-threading.
6. After the spark plug is seated,
tighten with a spark plug wrench to
compress the washer.
When installing a new spark plug, tighten 1/2 turn after the spark
plug seats to compress the washer. When reinstalling the original
spark plug, tighten 1/8 ~ 1/4 turn after the spark plug seats to
compress the washer.
NOTICE
Properly tighten the spark plug. A loose spark plug can become
very hot and can damage the engine. Overtightening the spark
plug can damage the threads in the cylinder head.
7. Attach the spark plug cap to the spark plug.
FLYWHEEL BRAKE INSPECTION
1. Remove the three flange
nuts from the recoil
starter, and remove the
recoil starter from the
engine.
2. Remove the fuel tank from
the engine without
disconnecting the fuel
tube. If the fuel tank
contains fuel, keep it level
as you remove it and set it
beside the engine in a
level position.
3. Check the brake shoe
thickness. If it is less than
3 mm (0.12 in), take the
engine to your authorized
Honda servicing dealer.
4. Install the fuel tank and
recoil starter, and tighten
the three nuts securely.
SPARK ARRESTER (OPTIONAL EQUIPMENT)
In some areas, it is illegal to operate an engine without a USDA
(United States Department of Agriculture)-qualified spark arrester.
Check local laws and regulations. A USDA-qualified spark arrester is
available from an authorized Honda servicing dealer.
The spark arrester must be serviced every 100 hours to keep it
functioning as designed.
If the engine has been running, the muffler will be hot. Allow it to cool
before servicing the spark arrester.
Spark Arrester Removal
1. Remove the three 6 mm
bolts from the muffler
protector, and remove
the muffler protector.
2. Remove the special
screw from the spark
arrester, and remove
the spark arrester from
the muffler.
Spark Arrester Cleaning & Inspection
1. Use a brush to remove carbon deposits
from the spark arrester screen. Be
careful not to damage the screen.
Replace the spark arrester if it has
breaks or holes.
2. Install the spark arrester in the reverse
order of removal.
NGK - BPR6ES Pressure washer applications
NGK - BPR5ES All other applications
SPARK PLUG
WRENCH
0.70 ~ 0.80 mm
(0.028 ~ 0.031 in)
SEALING
WASHER
FLANGE NUT (3)
FUEL TANK
FUEL
TUBE
RECOIL
STARTER
SPACER (3)
BRAKE SHOE
BRAKE SHOE
THICKNESS
SPARK ARRESTER
MUFFLER
PROTECTOR
6 mm BOLT (3)
SPECIAL
SCREW)
MUFFLER
POM52684-N.book Page 8 Friday, May 2, 2008 9:05 AM