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Maintenance – Zenoah EBZ3000RH User Manual

Page 13

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GB-13

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EBZ3000RH

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 (0.65mm).

• 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.

9. Maintenance

(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.