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Engine
Problem: Engine Does
Condition
Remedy
Not Start
A. No
Spark
At
Spark
1.
Igni
ti
on sw
itch malfunct
ion-
1.
Repl
ace igni
tion swit
ch-
Plu
gs
ing-swi
tch not
in
RUN
turn sw itc
h
to RUN posit ion
position
2.
Wiring harness short ing
-
2. Repair-
rep
lace-
con nect
disco nnected
wi ring harness
3.
Emergency stop switch in
3. Move switch to UP posit ion
-
DOWN position
-
switch
replace throttle switch
malfunctioning
4.
Throttlelignition mon
itor
sw itch
4. Adjust thrott le
c
ab le tens ion
-
adj usted incorrect
ly-
rep lace thrott le switch
malfunctio ning
5. Spark plugs fouled
-
damaged
5. Clean
-
replace
s
park plugs
6.
Spark-plug caps damaged
-
6. Rep lace spark-p I ug caps
leaki ng
-
short
i
ng
7. High tension wires/coi
l
loose
-
7.
Service
-
rep lace high
grounded
-
defective
tension wires/coil
8. COl unit defect ive
8. Replace COl unit
9.
9harge coil defect ive
9.
Replace charge co il
10. Trigger coil defect ive
10.
Rep lace t
ri
gger co il
11. Flywheel magnets weak
11. Replace flywheel
B.
No Fuel At Cylinders
1.
Fuel tank empty
1.
Fi
ll
tank
)
2. Fue
l
hose broken
-
pinched
2. Replace
-
serv ice hose
3.
Fuel -tank vent-hose
3. Remove obstruct ion
-
obstructed
rep lace vent
-
hose
4. In-l ine fue
l
fi lter obstructed
-
4.
Remove obstruct ion
-
replace
damaged
in-li
ne fue
l
fi lter
5. Fue
l
pump malfunct ioning
-
5. Rep lace
-
c lean fuel pump
defecti
ve
6.
Impu lse hose cracked
-
6.
Rep lace
-
connect impulse
broke
n-
pinc hed
-
hose
disco nnected
7.
Carburetor(s)
adjusted incor-
7. Troub les hoot carburetor(s)
rect
ly- dirty-
damaged
8. Primary compress ion abse nt
8. Repa
ir-
replace damaged
-
worn engi ne components
C. Misce
ll
any
1.
Carburetor-to-cYI
inder ai
r
leak
1.
Replace-
service
gaskets-
(Fuel Does Not Ig
ni
te)
intake flange
-
mani
fold-con-
nect oil delivery hose-service
intake ports
2. Carburetor adjusted incorrect ly
2.
Troubleshoot carbu retor
-
dirty
-
damaged
3.
Gasoline contam inated
3.
Clean
tank and entire delivery
system
4.
Engine flooded
4. Troubleshoot carbu
retor-
clean
-
replace air-intake
silencer
174
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