Trouble Analysis - Yamaha 50G Service Manual

TRBL
ANLS

TROUBLE ANALYSIS

NOTE:
The following items should be obtained before "trouble analysis".
1. Battery is charged and its specified gravity is in specification.
2. There is no incorrect wiring connection.
3. Wiring connections are surely engaged and without any rust.
4. Lanyard is installed to the engine stop switch.
5. Shift position is in neutral.
6. Fuel is coming to the carburetor.
7. Correct rigging and engine setting are obtained.
8. Engine is free from any "Hull problem".
TROUBLE ANALYSIS CHART
Trouble mode
TROUBLE ANALYSIS
Check elements
Relative part
FUEL SYSTEM
Idle speed
Fuel hose
Fuel joint
Fuel filter
Fuel pump
Carburetor
Pilot screw setting
POWER UNIT
Link adjustment
Compression
Read valve
Cylinder head gasket
Cylinder block
Piston
Piston ring
Crank case
Bearing
Thermostat
Water passage
9-1
E
Reference
Chapter
3
3
4
4
4
4
4
3
5
5
5
5
5
5
5
5
5
5