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SECTION II - ENGINE TROUBLE SHOOTING - - - - - - - - - - - -
ENGINE TROUBLE CHART (Cont)
Trouble
I
Remedy
CARBURETOR
Engine floods
A. Choke improperly adjusted.
B. Float improperly set.
C. Dirt in needle and seat.
D. High speed needle improperly set.
E. Air filter dirty.
Engine starves
A. Float valve corroded or gummed so that needle
valve doesn't open.
B. Water or foreign matter in the fuel.
C. Float level set too low.
D. Air filter dirty.
E. High speed needle improperly set.
F. Plugged vent in the gas cap.
G. Idle adjustment improperly set.
H. Heat range of spark plug too high.
I. Screen in carburetor and shut-off valve plugged.
J. Kinked fuel line.
A. Adjust choke linkage and shutter.
B. Adjust float level.
C. Clean or replace needle and seat.
D. Set high speed needle
1-1/
4 turns open and re-
adjust to optimum.
E. Clean air filter or replace.
A. Clean or replace valve.
B. Clean carburetor
and
fuel tank.
C. Reset float level.
D. Clean air filter or replace.
E. Set high speed needle
1-1/
4 turns open and re-
adjust to optimum.
F. Clean or replace cap.
G. Set idle adjustment 1 turn open.
H. Use lower heat range plug.
I. Clean or replace.
J. Replace line. Correct position of fitting in fuel
tank.
COMPRESSION
A. Loose spark plug.
B. Loose head or blown head gasket.
C. Piston rings carboned, worn, or broken.
D. Galled or burned piston.
E. Worn cylinder.
F. Poor lubrication.
G. Worn or damaged piston ring grooves.
H. Defective crankshaft oil seals.
10
A. Tighten spark plug.
B. Tighten head or replace head gasket.
C. Remove, clean, or replace.
D. Clean cylinder wall and replace piston.
E. Rebore and fit new oversize piston or replace.
F. Use proper fuel mixture.
G. Replace piston and rings.
H. Place small amount of oil around crankshaft
at oil seal.
If
oil is drawn into engine, seal
is leaking. Replace seal.
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