Specifications
Table Of Contents
- Table of Contents
- Introduction
- Safety
- Product Overview
- Before You Operate
- Engine Operation
- Periodic Maintenance
- Introduction
- Safety Precautions
- Precautions
- EPA Maintenance Requirements
- Periodic Maintenance Schedule
- Periodic Maintenance Procedures
- Daily Checks
- After Initial 50 Hours of Operation
- Every 50 Hours of Operation
- Every 100 Hours of Operation
- Every 150 Hours of Operation
- Every 250 Hours of Operation
- Draining the Fuel Tank
- Replacing the Engine Oil Filter Element
- Changing the Marine Gear Oil
- Checking or Replacing the Seawater Pump Impeller
- Cleaning the Intake Silencer (Air Cleaner) Element
- Cleaning or Replacing the Exhaust / Water Mixing Elbow
- Adjusting the Alternator V-ribbed belt Tension
- Cleaning the Breather Pipe
- Checking the Wiring Connectors
- Every 1000 Hours of Operation
- Troubleshooting
- Long-Term Storage
- Specifications
- System Diagrams
- EPA Warranty USA Only
- Emission System Warranty
PERIODIC MAINTENANCE
52 YM Series Operation Manual
Tightening Fasteners
Use the correct amount of torque when you tighten fasteners on the engine. Applying
excessive torque may damage the fastener or component and not enough torque may
cause a leak or component failure.
NOTICE
he tightening torque in the Standard Torque Chart should be applied only to the
bolts with a “7” head (JIS strength classification: 7T). Apply 60% torque to bolts
that are not listed. Apply 80% torque when tightened to aluminum alloy.
Bolt Diameter x
Pitch (mm)
M6x1.0 M8x1.25 M10x1.5 M12x1.75 M14x1.5 M16x1.5
Tightening
Torque
N·m 11.0 ± 1.0 26.0 ± 3.0 50.0 ± 5.0 90.0 ± 10.0 140.0 ± 10.0 230.0 ± 10.0
ft-lb 8.0 ± 0.7 19.0 ± 2.1 37.0 ± 3.6 66.0 ± 7.2 103 ± 7.2 170 ± 7.2
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