Yanmar 2TNV70 Service Manual page 259

Troubleshooting Charts
Trouble Symptom Starting Problem
Cause
Clogged Air Filter
Engine Used at High Temperatures or at
High Altitude
Clogged Exhaust Pipe
Starting Motor Defect O
Alternator Defect O
Open-Circuit in Wiring O
Battery Voltage Drop O
TNV IDI Service Manual
Poor
Insufficient
Exhaus
Engine
t
Output
Color
Engine
Starts Exhaust During
but Stops Color Work
Soon.
Exhaust
Smoke
O O O
O O
O O
Engine
Engine Oil
Surging
O
O
O
Engine Air
Coolant Intake
Corrective Action
O Clean Air Filter.
Study Output Drop and Load
O O
Matching.
O Clean Exhaust Pipe.
Repair or Replace Stater Motor.
Repair or Replace Alternator.
Repair Open Circuit.
Inspect and Change the Battery.
TROUBLESHOOTING
Reference Pages
See "Clean Air Cleaner Element"
on page 5-16.
See "Starter Motor" on page 10-8.
See "Removal of Alternator" on
page 11-10. or Removal of
Dynamo on page 11-18
See "Check Battery" on
page 5-12.
13-17