English Customer Service: 1-844-FIRMAN1
Maintenance Valve Clearance
Intake: ( )
Exhaust: 0.004 – 0.006 in. (0.10 – 0.15 mm)
0.004 – 0.006 in. 0.10 – 0.15 mm
Muffler and Spark Arrester
•
•
WARNING! Contact with muffler area could cause burns resulting in serious injury.
Do not touch hot parts.
It is a violation of California Public Resource Code, Section 4442, to use or operate the engine
on any forest-covered, brush-covered, or grass-covered land unless the exhaust system is
equipped with a spark arrester, as defined in Section 4442, maintained in effective working
order. Other states or federal jurisdictions may have similar laws, reference Federal
Regulation 36 CFR Part 261.52.
30
Maintenance - Storage
(d) Inspect spark plug for damage and clean with a wire brush before reinstalling. Replace if
damaged.
SPARK PLUG: FIRMAN P/N 330723001
(e) For spark plug FIRMAN P/N 330723001 - Adjust the electrode gap to 0.020 - 0.024 in. ( 0.5 - 0.6 mm).
(f) Seat spark plug in position and thread by hand to prevent cross threading.
(g) Tighten plug with provided wrench and put the spark plug boot back on spark plug.
0.020-0.024 in.
(0.5-0.6mm)
SPARK PLUG: FIRMAN P/N 330723001
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