What to do if Yanmar BY starter motor brushes are worn out?
If the starter motor brushes are not worn, replace the armature assembly. Otherwise, inspect the brushes and replace them if they show signs of wear.
Information on potential hazards associated with Yanmar marine engines.
Guidelines and warnings for safe operation and maintenance of the engine.
Procedures for proper care and maintenance of the engine.
Procedures not covered in EPA-related parts inspection section.
Summary of maintenance items by interval.
Detailed steps for maintenance tasks at specific intervals.
Disassembly, inspection, and reassembly of engine components.
Procedures for servicing the cylinder head and its components.
Procedures for removing, inspecting, and assembling pistons and cylinders.
Procedures for removing and installing the flywheel and housing.
Procedures for servicing the camshaft and timing components.
Procedures for servicing the cylinder block and crankshaft.
Procedures for removing and installing the intake manifold.
Procedures for removing and installing the exhaust manifold.
Procedures for servicing fuel system components.
Procedure to measure the low-pressure fuel pump output.
Procedures for servicing the marine engine cooling systems.
Procedures for servicing the engine lubrication systems.
Procedures for servicing turbochargers used on 4BY and 6BY engines.
Procedures for testing and adjusting turbocharger parameters.
Servicing procedures for the starter motor on 4BY and 6BY engines.
Diagnostic chart to identify and resolve starter motor problems.
Servicing procedures for the charging system.
Procedures for repairing alternator system components.
Procedures for testing and replacing electrical system and ECU components.
Safety warnings before working on the electrical system.
Procedures for replacing electrical and ECU components.
Information and charts to diagnose engine, starter, or alternator problems.
Overview of the troubleshooting section.
Information on engine faults and torque reduction strategies.
Diagnostic charts for common engine problems.
Troubleshooting steps for engine starting issues.
Diagnosis of engine problems based on exhaust smoke color.
Troubleshooting for vibration when the drive is disengaged.
Troubleshooting for vibration when the drive is engaged.
Diagnosis and causes of engine knocking.
Troubleshooting steps for reduced engine power.
Diagnosis and solutions for engine overheating.
Troubleshooting steps for an engine running too cold.
Diagnosis and causes of coolant loss.
Troubleshooting for issues related to the helm panel display.
List and explanation of diagnostic trouble codes (P-codes).
Detailed information on trouble codes and their causes.
Steps to take after completing troubleshooting or repairs.
To Next Page
General
