Firman H03652, Owner'S Manual

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Page 27
Spark Plug Maintenance
Changing the spark plug will help your engine
to start easier and run better.
(a) Remove the spark plug cap.
(d) Adjust the electrode gap to 0.7 to 0.8 mm
(0.028” to 0.031”).
(e) Seat spark plug in position and thread by
hand to prevent cross threading.
(f) Tighten plug with provided wrench and put
the cap back on spark plug.
SPARK PLUG: TORCH F6RTC
NGK BPR6ES
CHAMPION RN9YC or equivalent.
(b) Remove spark plug using provided wrench.
Inspect spark plug for damage and clean
with a wire brush before reinstalling
Inspect Muffler and Spark Arrester
Inspect the muffler for cracks, corrosion, or
other damage. Remove the spark arrester, if
equipped, and inspect for damage or carbon
blockage. If replacement parts are required,
make sure to use only original equipment
replacement parts.
Exhaust heat/gases could ignite combustibles,
structures or damage fuel tank causing a fire,
resulting in death or serious injury and/or
property. Contact with muffler area could cause
burns resulting in serious injury.
WARNING
A
B
A- Spark plug
B- Spark plug cap
c) (
English Customer Service: 1-844-FIRMAN1
DO NOT touch hot parts and AVOID hot exhaust
gases
.
Allow equipment to cool before touching
.
Keep at least 5 feet (1.5 m) of clearance on all
sides of generator including overhead.
Replacement parts must be the same and
installed in the same position as the original
parts.
Clean or replace spark arrester as follows :
1. Allow the engine to cool completely before
servicing the spark arrester.
2. Remove the screws securing the spark arrester
in place and the remove it from muffler.
•
•
•
•
Depending on the type fuel used ,the type and
amount of lubricant used, and/or your operating
conditions, the exhaust part and muffler may
become blocked with carbon deposits. If you
notice power loss, you may need to remove these
deposits to restore performance.
Maintenance Valve Clearance
- Intake: 0.1 0.15 mm (0.004 - 0.006 in.)
- Exhaust: 0.1 - 0.15 mm (0.004 - 0.006 in.) -
To be performed by knowledgable/experienced
owner or by authorized service center .