English Customer Service: 1-844-FIRMAN1
Maintenance Valve Clearance
Intake: 0.004 – 0.006 in. (0.10 – 0.15 mm)
Exhaust: 0.004 – 0.006 in. (0.10 – 0.15 mm)
Muffler and Spark Arrester
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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.
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Maintenance - Storage
(d) Inspect spark plug for damage and clean with a wire brush before reinstalling. Replace if
damaged.
(e) Adjust the electrode gap to 0.028 - 0.031 in. ( 0.7 - 0.8 mm).
(f) Seat spark plug in position and thread by hand to prevent cross threading.
SPARK PLUG: TORCH F6RTC, NGK BPR6ES, CHAMPION RN9YC or equivalent.
0.028-0.031in
(0.7-0.8mm)
(g) Tighten plug with provided wrench and put the spark plug boot back on spark plug. Do not overtighten.
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