Firman T09371 - Maintenance Valve Clearance; Muffler and Spark Arrester

Maintenance - Storage
( c) Inspect spark plug for damage and clean with a wire brush before reinstalling. Replace if
damaged.
(d-1) For spark plug FIRMAN P/N 330723001 - Adjust the electrode gap to 0.020 - 0.024 in. ( 0.5 - 0.6 mm).
(d-2) For spark plug CHAMPION N9YC -Adjust the electrode gap to 0.028 - 0.031 in. ( 0.7 - 0.8 mm).
(e) Seat spark plug in position and thread by hand to prevent cross threading.
(f) Tighten plug with provided wrench and put the spark plug boot back on spark plug .
SIDE ELECTllODE
~-.t.0.020-0.024 In.
(0 . 5-0.6mm)
SEAUNG
WASHER
SPARK PLUG: FIRMAN P/N 330723001
SIDE ELECTIIODE
'- --- ~- 0.028-0 .031 In.
(0.7-0.Smm)
SEAUNG
WASHER
SPARK PLUG: CHAMPION N9YC
SPARK PLUG: FIRMAN P/ N 330723001 or CHAMPION N9YC
Maintenance Valve Clearance
Intake: 0.005 - 0.007in. (0.13-0.17 mm)
Exhaust: 0.007 - 0.009 in. (0.18 - 0.22 mm)
Muffler and Spark Arrester
~ WARN INC! Contact with muffler area could cause burns resulting in serious injury.
e Do not tough hot parts.
e 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.
English 31 Customer Se rv ice: 1-844-FIRMAN 1