Yanmar YSE8 - Yanmar YSE Troubleshooting: Sudden Engine Stop

Cbeck
point
Posaible
cause
Remedy
4. Fuel
oil. 1. Unsuitable
quality.
Change
fuel
oil. 7
5.
Injection.
1. Stuck or worn nozzle.
Correct
or renew,
19
2. High
or low
pressure.
Adjust
to 160
kglcm2.
20
6.8
Sudden
Engine
Stop
Check
point
Possible
cause
Remedy
1. Heavy
manual
rurrung.
1.
Seized
main bearing metal. Renew.
2. Seized crankpin
metal. Renew,
26
3. Seized
pistod
and cylinder
Iiner,
Renew.
27
30
2.
Injection
3.
Compression.
1.
Fuel
failure,
Supply fuel
oil
2.
Unsuitable.luality.
Change
fuel oil
5.
Load.
1. Overload.
Reduce
load.
F
14"
t
6,9
Lub€ oil Leak
6.10 Fuel Oil Leak
Check
point
Possible cause
Remedy
1, Contact surfaces
of
parts.
1. Loose bolts and nuts.
Retighten.
2.
Scratched
packings.
Renew.
2. Sliding
parts.
1.
Scratched
or worn
oil seals
or
shafts.
Renew.
3. Lube
oil
tube.
1,
Loose
bolts
or scratched.
Retighten
or renew.
Check
point
Possible
cause Remedy
1.
Firel
tank cock
reutlner.
1.
Loose bolts and
nuts,
ot
scratched
packings.
Retighten,
or rene\r.
2. Fuel
oil
pipe.
1. Loose
or scratched bolts. Retighten,
or renew,
3. Oil reaervoir.
1. Defective
plunger
tight€ning
nuts, loose setbolts,
damaged
packings,
or
scratched
codtact
surfaces,
Retighten,
or renew.
23
l4