KYMCO MXU 50 REVERSE - Page 34

1. GENERAL INFORMATION
1-31
ATV 50
ENGINE STOPS IMMEDIATELY AFTER IT STARTS
c Empty fuel tank
d Clogged float valve
e Clogged charcoal canister
f Clogged fuel filter
g Faulty auto fuel valve
c Fouled spark plug
d Incorrect heat range plug
c Fouled spark plug
d Faulty CDI unit
e Faulty A.C. generator
f Faulty ignition coil
g Broken or shorted high
tension wire
h Faulty ignition switch
c Worn cylinder and piston
rings
d Blown cylinder head gasket
e Flaws in cylinder head
f Faulty reed valve
g Seized piston
c Clogged carburetor jets
c Faulty CDI unit or A.C.
generator
d A.C.G. flywheel not aligned
c Mixture too rich (turn screw
out)
d Mixture too lean (turn screw
in)
Check if fuel reaches
carburetor by loosening
drain screw.
Inspection/Adjustment Symptom
Probable Cause
Fuel reaches
carburetor
Good spark
Remove spark plug and
install it into spark plug
cap to test spark by
connecting it to engine
ground.
Correct timing
Correctly adjusted
Plug not fouled o
r
discolored
Normal
compression
Not Clogged
Fuel does no
t
reach carburetor
Weak or inter-
mittent spark
Incorrect timing
Incorrectly adjusted
Plug fouled o
r
discolored
Abnormal
compression
Clogged
Test cylinde
r
compression (using a
compression gauge).
Check carburetor fo
r
clogging.
Check ignition timing.
Check carburetor ai
r
screw adjustment.
Remove spark plug and
install it into spark plug
cap to test spark by
connecting it to engine
ground.