Shindaiwa PowerBroom PS344 - Manual (Page 16)

16
Maintenance (continued)
If the engine becomes sluggish and low
on power, check and clean the spark
arrester screen.
iMPORTanT!
If you note excessive carbon buildup,
consult with an authorized Shindaiwa
servicing dealer.
Muffler Maintenance
WARNING!
Never operate the unit
with a damaged or missing muffler
or spark arrester! Operating with a
missing or damaged spark arrester
is a fire hazard and could also dam-
age your hearing.
With a 3 mm hex wrench remove 1.
the 3 engine cover screws and the
engine cover.
With a 4 mm hex wrench, remove
2.
the 3 muffler bolts and the muffler.
With a small flat bladed screwdriver
3.
remove the 2 screws holding the
spark arrester screen and cover to
the muffler.
Remove the screen and clean it
4.
with a stiff bristle brush.
Inspect the cylinder exhaust port for
5.
any carbon buildup.
Reassemble the spark arrester,
6.
muffler and engine cover in the
reverse order of disassembly.
Engine
Cover
Screws
Engine Cover
Muffler
Muffler Gasket
Muffler Bolts
Spark Arrester Screen
Spark Arrester Cover
Cover Screws
Carburetor adjustment
Engine Break-In
New engines must be operated a minimum duration of two tanks of fuel break-in before carburetor adjustments can be
made. During the break-in period your engine performance will increase and exhaust emissions will stabilize. Idle speed can
be adjusted as required.
High Altitude Operation
This engine has been factory adjusted to maintain satisfactory starting, emission, and durability performance up to
1,100 feet above sea level (ASL) (96.0 kPa). To maintain proper engine operation and emission compliance above
1,100 feet ASL the carburetor may need to be adjusted by an authorized Shindaiwa service dealer.
nOTE:
Every unit is run at the factory and the carburetor is set in compliance with emission regulations. Carburetor adjustments,
other than idle speed, must be performed by an authorized Shindaiwa dealer.
iMPORTanT!!
If the engine is adjusted for operation above 1,100 feet ASL, the carburetor must be re-adjusted when operating the
engine below 1,100 feet ASL, otherwise severe engine damage may result.