Maintenance - Swisher E4-S3000 Owner's/Operator's Manual

139/150-Hour Maintenance
Maintenance after first 139-hours, then every 150-hours thereafter.
Combustion chamber should be decar-
bonized, and the valve clearance should
be adjusted. It is highly recommended
that this is done by a Swisher-trained
service technician.
Valve Adjustment
1. Remove cylinder cover, rocker arm 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.
CAUT|ON!
II Performing a valve adjustment
incorrectly may cause hard starting
and/or can damage the engine.
II If you are unfamiliar with this engine
or uncomfortable with this proce-
dure, consult with an authorized
Swisher servicing dealer.
m Replace the spark plug annually: Use
only NGK CMR5H or equivalent resis-
tor type spark plug of the correct heat
range. Set spark plug electrode gap to
0.024-0.028 inch (0.6 -0.7 mm).
2. Ix)osen adjuster locknut so that the 2.5
mm Allen socket head adjustment screw
can turn freely.
3. Insert 0.10 mm (0.004") feeler gauge
between valve stem tip and rocker arm.
4. Turn adjustment screw (clockwise =
tighter, counter-clockwise = looser) until
feeler gauge is almost snug. Back off
just enough to allow gauge to slip out
with limited resistance.
5.
While holding the adjustment screw in
place with the Allen driver, tighten the
locknut with a wrench.
The NGK CMRSHalso meets the requirements
for electro magnetic compliance _MC).
6. Turn engine over several times, and re-
turnthe 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.
7. Replace rocker arm cover gasket to as-
sure proper sealing and install cover.
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!
Spark Attester Screen Maintenance
If the engine becomes sluggish and low on pow-
er, check and clean the spark arrester screen.
WARN|NG!
Neveroperate the unitwith a damaged
or missing muffleror spark arrester!
Operatingwith a missing or damaged
spark arrester is a fire hazard and
could also damage your hearing.
These instructions refer to Figure 32.
1. With a 3 rrnn hex wrench remove the 3
engine cover screws and the engine cover.
2. With a 4 mm hex wrench remove the 3
muffler bolts and the muffler.
3. With a small flat bladed screwdriver
remove the 2 screws holding the spark
arrester screen and cover to the muffler.
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.
Engine Cover_
Scre ws i
I
If you note excessive carbon buildup, consult
with an authorized E4 Swisher servicing
dealer. Contact Swisher Inc. at (800) 222-8183,
or go to www.swisherinc.com for assistance.
I
i
I
I
Muffler
Muffler
/
Gasket
_2 Muffler Bolts
......... _a /
Figure 32
Screen
Spark Arrester
Cover
Cover
Screws
14