34
PROBLEM
POSSIBLE CAUSE
SOLUTION
The engine does
not reach full speed
and emits excessive
smoke.
Incorrect lubricant/fuel
mixture.
Empty tank. Use fresh fuel and the correct
2-cycle lubricant mix (40:1).
The air filter is dirty.
Clean the air filter. Refer to Cleaning the Air
Filter section in this manual.
The spark plug is worn
out.
Clean or replace the spark plug. Reset the
spark plug gap. Refer to the Spark Plug
Replacement section in this manual.
The engine overheats.
Allow the engine to run at idle for 5 minutes.
Then stop the blower and allow it to cool for
about 20 minutes.
The spark arrestor
screen is dirty.
Contact an authorized service dealer.
The engine starts,
runs, and accelerates
but will not idle.
The idle speed screw
on carburetor needs
adjustment.
Contact an authorized service dealer.
TROUBLESHOOTING
Summary of Contents for NPTBL31AB
Page 17: ...17 BATTERY PACK AND CHARGER Fig 13 Fig 14...
Page 40: ...40 Notes...
Page 80: ...80 Notas...
