Shindaiwa PowerBroom PB2500 Operator's Manual page 15

Spark Arrester Screen Maintenance.
If the engine becomes sluggish and low
on power, check and clean the spark
arrester screen.
WARNING!
BURN DANGER! The engine will
become very hot during normal
operation. Let engine cool before
servicing.
WARNING!
Never operate the unit with a dam-
aged or missing muffler or spark
arrester! Operating with a missing or
damaged spark arrester is a fire
hazard and could also damage your
hearing.
1. With a 3 mm hex wrench remove the
4 engine cover screws and the engine
cover. See Figure 28.
2. With a 4 mm hex wrench remove the
3 muffler bolts and the muffler.
See Figure 28.
3. With a small flat bladed screwdriver
remove the 2 screws holding the
spark arrester screen and cover to
the muffler. See Figure 28.
300-hour Maintenance
Gearcase Lubrication
The gearcase should be filled with 60 cc
(2.0 fl.oz.) of Mobil SHC634 Synthetic
Gear Oil. A maximum of 75-80 cc can be
used, but never to exceed 80 cc. Opera-
tion with excessive oil level will result in
high operating temperatures. Do not
overfill!
Figure 29
Replacing the gearcase oil
WARNING!
BURN DANGER! The gearcase will
be extremely hot after use!
Engine Cover
Screws
Figure 28
4. Remove the screen and clean it with a
stiff bristle brush.
5. Inspect the cylinder exhaust port for
any carbon buildup.
6. Reassemble the spark arrester, muffler
and engine cover in the reverse order
of disassembly.
1. Disconnect spark plug wire at engine.
2. Remove the LH Drum and axle
assembly (as viewed from the operat-
ing position). Wipe the sideplate clean
and remove four screws (it is not
necessary to remove the gearcase
from the outer tube).
3. Turn gearcase side plate to break the
seal and lift the plate from the gear-
case. See Figure 29.
It may be necessary to use a heat gun to
soften the sealer material.
4. Turn the gearcase to the LH side and
allow all used gearcase oil to drain into
a small container and properly dispose
of as in accordance with your local
regulations.
PB2500.21
5. Place the gearcase on the RH side and
supported so the outer tube is parallel
to the ground. Refill the gearcase with
60 cc (2.0 fl.oz) of Mobil SHC634
Synthetic Gear Oil to the bottom of the
chamfer on the output gear. The
Muffler
Gasket
PB2500.20
If you note excessive carbon buildup,
consult with an authorized Shindaiwa
servicing dealer.
NOTE:
Figure 30
6. Inspect the sideplate for damage and
7. Replace the cover and install the four
8. Reinstall the drum and axle assembly
Cover
Muffler
Spark Arrester
Screen
Spark Arrester
Cover
Cover Screws
IMPORTANT!
Fill to
this level
PB2500.22
correct oil depth is 5/8" (15.5 mm).
See Figure 30. DO NOT OVERFILL!
clean off all remaining liquid gasket
material with brake cleaner or acetone.
Coat the outer sealing flange of the
sideplate with Loctite Ultragrey Silicon
Sealant or Threebond No. 1104
Liquid Gasket.
sideplate screws. Tighten securely.
per the sweeper assembly instructions.
See page 9.
Muffler
Bolts
15