DR RV340 User Manual

12 DR
®
RV340 ENGINE
VIII: 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
shutoff is closed.
Fill fuel, open fuel shutoff.
Air vent in the fuel filler cap is clogged Dredge air vent.
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
gg
ed.
Dismantle needle valve and repair, clean, blow to get
throu
g
h.
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
re
q
uirements.
Normal fuel supply system.
Normal high –
tension line
Spark.
Spark plug is in
bad condition
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
no spark Ignition
system
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
Abnormal cylinder compression.
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
g
asket.
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
Air leakage in the valves Tighten cylinder head bolts in proper order to proper
tor
q
ue.
Check valve clearance and tightness. Repair if
necessar
y
.
If engine will still not start, contact DR Power Equipment.

DR RV340 Specifications

General

Brand	DR
Model	RV340
Category	Engine
Language	English