Shindaiwa PowerBroom PS344 - Manual (Page 15)

15
Maintenance (continued)
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!
Turn the gearcase to the LH side 4.
and and allow all used gearcase oil
to drain into a small container.
Place the gearcase on the RH side
5.
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 correct oil
depth is 5/8" (15.5 mm). DO NOT
OVERFILL!
WARNING!
BURN DANGER! The
gearcase will be extremely hot after
use!
Replacing the gearcase oil
Disconnect spark plug wire at 1.
engine.
Remove the LH Drum and axle
2.
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).
Turn gearcase side plate to break
3.
the seal and lift the plate from the
gearcase.
Inspect the sideplate for damage and 6.
clean off all remaining liquid gasket
material with brake cleaner or ace-
tone. Coat the outer sealing flange of
the sideplate with silicon sealant.
Replace the cover and install the
7.
four sideplate screws. Tighten
securely.
Reinstall the drum and axle assem-
8.
bly. Refer to the section “Assembly:
Sweeper Assembly” for instructions.
300-hour maintenance
iMPORTanT!
If a new gasket is not available and/
or the old gasket is not damaged, the
old gasket may be reused. Never use
cracked or damaged gaskets!
Turn engine over several times, 6.
and return to TDC-compression.
Recheck with proper feeler gauge to
make sure clearance adjustment did
not change as a result of tightening
the locknut. Readjust as necessary.
Replace rocker arm cover gasket 7.
to assure proper sealing and install
cover.
Valve Adjustment
Remove cylinder cover, rocker arm 1.
cover, and spark plug. Rotate the
crankshaft while observing the piston
through the spark plug opening.
When the piston is at the top of the
compression stroke (TDC), the valves
can be adjusted.
Loosen adjuster locknut so that the 2.
2.5 mm Allen socket head adjustment
screw can turn freely.
Insert 0.10 mm (0.004”) feeler gauge
3.
between valve stem tip and rocker
arm.
Turn adjustment screw (clockwise =
4.
tighter, counter-clockwise = looser)
until feeler gauge is almost snug.
Back off just enough to allow gauge
to slip out with limited resistance.
While holding the adjustment screw
5.
in place with the Allen driver, tighten
the locknut with a wrench.
CaUTiOn!
Performing a valve adjustment
■
incorrectly may cause hard
starting and/or can damage the
engine.
If you are unfamiliar with this
■
engine or uncomfortable with
this procedure, consult with an
authorized Shindaiwa servicing
dealer.
135 hour maintenance (cont.)
Turn gearcase side plate to break the seal
and lift the plate from the gearcase
Fill the gearcase to the bottom of the
chamfer on the output gear.
DO NOT OVERFILL!
nOTE:
It may be necessary to use a heat gun
to soften the sealer material.