DR 5.8 HP Operations Instructions download pdf (Page 15)

X: Troubleshooting

1. ENGINE STARTING DIFFICULTLY:

TROUBLE CAUSE REMEDY

Normal cylinder compression

Normal spark plug spark

Something wrong with the fuel system.

Fuel supply is not smooth or

no fuel supply.

There is not enough fuel in fuel tank and fuel shutof

is closed.

Fill fuel, open fuel shutoff.

Air vent in the fuel filler cap is clogged Dredge air vent.

Fuel shutoff is clogged Clean first and then dredge

Improper or clogged main fuel flow hole. Readjust or clean, blow to get through.

Needle valve is not closed properly or start hole is

clo

ed.

Dismantle needle valve and repair, clean, blow to get

throu

Float is damaged or sticking. Repair float

Fuel supply is

normal.

Fuel is too filthy or deteriorated Replace

There is water in fuel. Replace

Too much fuel in engine Drain extra fuel, dry up spark plug electrodes.

Wrong fuel brand Select proper fuel brand corresponding with the

uirements.

Normal fuel supply system.

Normal high –

tension line

Normal high-

tension line spark

Too much carbon deposit and dirt around

electrodes.

Clear away.

Electrodes are burn damaged seriously or insulators

damaged.

Replace spark plug.

Improper electrodes gap. Adjust to proper value.

High-tension line

not normal

Normal spark

plug

High–tension line is damaged. Replace

Ignition coil is damaged. Replace

Magneto loses magnetism. Replace

Abnormal gap between ignition coil and flywheel. Adjust gap

TROUBLE CAUSE REMEDY

Abnormal cylinder compression.

Normal fuel su

stem.

Normal spark plug.

Piston ring is worn to or even over its wear limit Replace

Piston ring is broken. Replace

Piston ring is sticking. Clear up carbon fouling.

Spark plug is not installed tight or without a gasket. Tighten with a gasket installed.

Air leakage between cylinder block and cylinder head. Check cylinder gasket, and the flatness of the surface

where cylinder block contacts the cylinder head

Tighten cylinder head bolts in proper order to proper

tor

ue.

Air leakage in the valves Check valve clearance and tightness. Repair if

necessar

If engine will still not start, contact DR Power Equipment.

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DR 5.8 HP Operations Instructions Page 15

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