Zenoah EBZ3000RH Owner's Manual page 12

EBZ3000RH
9. Maintenance
SPARK PLUG
• The spark plug may gather carbon deposits on its
firing end with reasonable use. Remove and inspect
the spark plug every 25 hours and clean the elec-
trodes as necessary with a wire brush. The spark gap
should be adjusted to .025 in (0.6~0.7mm).
• Plug manufacturers recommend replacing the plug
twice a year to avoid unexpected plug failure in a job.
REPLACEMENT PLUG IS NGK CMR7H.
IMPORTANT
• Note that using any spark plugs other than those des-
ignated may result in the engine failing to operate
properly or in the engine becoming overheated and
damaged.
• To install the spark plug, first turn the plug until it is
finger tight, then tighten it a quarter turn more with a
socket wrench.
MUFFLER
WARNING
• Inspect periodically, the muffler for loose fasteners,
any damage or corrosion. If any sign of exhaust leak-
age is found, do not use the blower and have it re-
paired immediately.
• Note that failing to do so may result in the engine
catching on fire.
IMPORTANT
• Before starting operation, always make sure to check
if the muffler is properly held by two bolts. (Fastening
Torque : 7 to 11 N·m)
• Also make sure that the spark arrester and the dif-
fuser are properly attached with two bolts. (Fastening
Torque : 2 to 3 N·m)
• Even if one of four bolts is loose, it may result in en-
gine catching on fire.
GB-12
(1) Bolt
(2) Bolt
(3) Spark Arrester
(4) Diffuser
SPARK ARRESTER
• The muffler is equipped with a spark arrester to pre-
vent red hot carbon from flying out of the exhaust out-
let. Periodically inspect and clean as necessary with
a wire brush. In the State of California it is required by
law (Section 4442 of the California Pulic Resources
Code) to equip a spark arrester when a gas powered
tool is used in any forest covered, bush covered, or
grass covered unimproved land.
PROCEDURES TO BE PERFORMED AFTER EV-
ERY 100 HOURS OF USE
1. Remove the muffler, insert a screwdriver into the vent,
and wipe away any carbon buildup. Wipe away any
carbon buildup on the muffler exhaust vent and cylin-
der exhaust port at the same time.
2. Tighten all screws, bolts, and fittings.