Swisher E4-S3000 139/150-Hour Maintenance, Spark Attester Screen Maintenance, Valve Adjustment

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.

CAUTON!

IIPerforming a valve adjustment incorrectly may cause hard starting and/or can damage the engine.

IIIf 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.	Engine Cover_	i
	Scre ws
		I

WARNNG!

Neveroperate the unitwith a damaged or missing muffleror spark arrester! Operatingwith a missing or damaged spark arresteris 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		I
		i
engine cover screws and the engine	cover.	I
		I

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	Figure 32
disassembly.

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.

Muffler

Muffler/

Gasket

_2 Muffler Bolts

.........a /

Screen

Spark Arrester

Cover

Cover

Screws

14