Entec EW-4200D Betriebsanleitung - Seite 16

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Periodic Maintenance

EW-4200D

VALVE ADJUSTMENT

The Intake and Exhaust Valve (8/4 & 11) clearance is set by the

adjustments on the Rocker Arms (8/23 & 24). The adjustments

must be made when the engine is at ambient temperature. Using

a 13mm wrench, remove the two nuts and gaskets (8/44 & 41)

on top of the Valve Cover (8/40). Gently lift the Valve Cover off

the Cylinder Head.

Valve Cover

Rocker Arm Anvil

Put the Handcrank into the Camshaft and rotate it counterclock-

wise until you feel hard resistance from compression. Check the

gap between the valve stem and the anvil on the rocker with a

feeler gauge. There should be a very slight drag with a .006 inch

gauge.

If it is not correct, loosen the locknut (8/24) with an 11mm

wrench. Adjust the clearance with a screwdriver in the slot of the

adjustment screw (8/23). Hold the screw in position while

tightening the locknut. Re-check the clearance. Both valves

require the same clearance.

The valve clearance should be checked every 250 to 300 hours,

or annually.

Locknut

HEAT EXCHANGER

The Heat Exchanger (16/1) utilizes cupro-nickel tubes. They

should last for the life of the generator. However, the tubes can

become clogged with silt and sea water contamination. To clean

the tubes, remove the End Caps and gaskets on each end. Clear

the tubes by pushing a stiff rod through them. Do not use a rod

diameter greater than 11/64 .

The Heat Exchanger contains a sacrificial Zinc Insert in a plug

(16/2). Examine it when checking the valve clearance and

Plug with

Heat Exchanger

replace, as necessary. The Zinc is a readily available Type 1A.

Zinc Insert

End Cap

Entec West, Inc.

16710 SW 72nd • Portland, Oregon 97224 • (503) 624-7118