Replacement Part List
Page 22
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
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. 
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Clean or replace spark arrester as follows:
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.
1. Allow the engine to cool completely before 
 servicing the spark arrester.
2. Loosen the spark arrester clamp, remove the 
 spark arrester cover, and with a thin blade 
 screwdriver remove the spark arrester.
Spark Plug Maintenance
Changing the spark plug will help your engine 
to start easier and run better.
(e) Adjust the electrode gap to 0.7 to 0.8 mm 
 (0.028” to 0.031”).
(f) Seat spark plug in position and thread by 
hand to prevent cross threading.
(g) Tighten plug with provided wrench and put 
 the cap back on spark plug.
SPARK PLUG: TORCH F6RTC
(d) I
 with a wire brush before reinstalling
nspect spark plug for damage and clean 
(a) Remove the maintenance cover.
(b) Remove the spark plug cable from the spark 
 plug.
NGK BPR6ES
CHAMPION RN9YC
(c)Remove spark plug using provided wrench.










