TGB X-MOTION 250, Owner'S Manual

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2-8-4 Troubleshooting for slow run (troubled engine)
Poor slow run
Analysis of potential causes
-----------------------------------
►
Check for contamination in spark plugs and excessive gap
Poor
Cleaning and
adjustment
Fair
Is the air filter grill
obstructed?
I
Poor Fair
|
Replacement of
the filter grill
Is the carburetor buoyant
level normal ?
Fair Poor
| |
Check if the choke
valve fails (valve
does not open) ? Adjustment or
replacement of the
buoyant needle valve
Dirty spark plugs
Incorrect spark plug
gaps
Incorrect ignition
timing
Obstructed air filter
grill
Poor carburetor
buoyant needle valve
Poor carburetor choke
valve
Poor engagement of
carburetor and inlet
tube
Obstructed carburetor
slow injection
Poor engagement of
cylinder head washer
Severe wear of
cylinder, piston, piston
ring
Poor
Fair
Correction
Check of for air between the
carburetor and the air inlet
Poor
Fair
Add tightening force or
replacement of the washer
Check for obstruction in the
carburetor slow injection
X
Poor
Fair
Cleaning Test the compression
35
Check for air leakage in the cylinder washer,
check wear of cylinder, piston, piston ring
and other elements with correction,
______ adjustment or replacement ______
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Alarming abnormality of ignition timing
adjustment
Fair
Poor