CH3 Series (78 - 280mhp)
 
   
Yanmar CH3 Series Marine Diesel Engine
(78 - 280mhp)
 

The work engine with top popularity ratings!
When it comes to selecting a high performance work engine you can't do better than look at the wide CH range of Yanmar diesel. Running from 57.4kW to 206kW in a selection of 5 models there's an engine here to match most workboat jobs. They are remarkable for their stable, high speed output and for the refinements that have developed these veteran units into today's highly sophisticated performers.

Superior top-end technology
To equip the UTE models for the special roles of high speed vessels they have such sophisticated features as a super-high pressure and incredibly precise injection pump, four valves per head and Yanmar's unique 'plum blossom' piston crowns.

Time-tested toughness
Yanmar's successful wave-ribbed 'monoblock' cylinder block, stamp-forged carbon steel crankshafts and connecting rods are part of the story of strength in all CH engines. They also have a special thermo-controlled, fresh water cooling system that keeps all vital parts at optimum operating temperature, greatly saving wear and prolonging engine life. Another great advantage is the latest Yanmar marine gear, carefully matched by out own technicians to make the ideal combination of strength and smooth power drive.

Servicing simplified
Features such as inspection hatches in the block, for six cylinder models, easy access to maintenance points and simple replacement of piston rings all help the owner keep his engine at work longer hours.)
 


[Click image to enlarge]


Engine
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  4CHE3 6CHE3 6CH-HTE3 6CH-DTE3 6CH-UTE
Type 4-Cycle Vertical 4-Cycle Vertical 4-Cycle Vertical 4-Cycle Vertical 4-Cycle Vertical
Aspiration Natural Natural  Turbo-charged Turbo-charged Turbo-charged
Maximum Output 85mhp @ 2600rpm 130mhp @ 2600rpm 190mhp @ 2600rpm 230mhp @ 2600rpm 280mhp @ 2600rpm
Cylinders 4 in-line 6 in-line 6 in-line 6 in-line 6 in-line
Cooling System Fresh water cooling with sea water and fresh water pumps
Bore x Stroke 105 x 125 mm 105 x 125 mm 105 x 125 mm 105 x 125 mm 105 x 125 mm
Displacement 4.330 litres 6.494 litres 6.494 litres 6.494 litres 6.494 litres
Dry Weight 500 kg 630 kg 655 kg 690 kg 730 kg
     
  Marine Gear
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Engine Model 4CHE3 6CHE3
Model YX-20-1 YX-30-2
Type Hydraulic, multi-disc clutch, wet type
Reduction Ratio (Ahead) 2.03 2.55 2.96 3.48 2.03 2.55 2.96 3.48
Prop Shaft Speed (rpm) 1257 999 861 733 1257 999 861 733
Direction of Rotation Clockwise (or counterclockwise viewed from stern)
Dry Weight 68 kg 70 kg
     
 
Engine Model 6CH-HTE3 6CH-DTE3, 6CH-UTE
Model YX-50S YX-71-4 MGN46BL
Type Hydraulic, multi-disc clutch, wet type
Reduction Ratio (Ahead) 2.06 2.50 2.96 3.45 2.07 2.58 2.91 3.53 3.90 4.42
Prop Shaft Speed (rpm) 1236 1020 861 738 1231 987 877 723 653 577
Direction of Rotation Clockwise (or counterclockwise viewed from stern)
Dry Weight 117 kg 214 kg 260 kg
     
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  Component Qty

4CHE3

6CHE3

6CH-HTE3

6CH-DTE3

6CH-UTE

Installation Installation Plate for Wooden Boat 2 ü Optional Optional Optional Optional
Adjusting Shim for Engine 1 set Optional Optional Optional Optional Optional
Adjusting Shim for Marine Gear 1 set Optional Optional Optional Optional Optional
Installation Bolt Kit 1 set Opt. 4 Opt. 8 Opt. 12 Opt. 12 Opt. 12
Jack Bolt 1 set Opt. 4 Opt. 4 Opt. 6 Opt. 6 Opt. 6
Chock Liner, Bolt & Nut for Steel Boat 1 set Optional Optional Optional Optional Optional
Air Exhaust Gas Pipe 1 Opt. 65A Opt. 80A Opt. 90A Opt. 90A Opt. 100A
Breather Hose with Fittings 1 set ü ü ü ü ü
Exhaust Flexible Joint (T/C out) 1 Optional Optional ü ü ü
Intake Air Filter 1 - - ü ü ü
Exhaust Gas Silencer 1 Optional Optional Optional Optional Optional
Engine Room Ventilator 1 set Optional Optional Optional Optional Optional
Fuel Oil Drain Separator 1 ü ü ü ü ü
Simplex Type Fuel Filter 1 ü ü ü ü ü
Fuel Sediment Filter 1 Optional Optional Optional Optional Optional
Fuel Oil Pipe 1 Optional Optional Optional Optional Optional
Lube Oil Evacuation Hand Pump 1 ü ü ü ü ü
Simplex Type Oil Filter 1 ü ü ü ü ü
Cooling System Kingston Cock (for Wooden Boat) 1 Optional Optional Optional Optional Optional
Kingston Valve (for Steel Boat) 1 Optional Optional Optional Optional Optional
Raw Water Filter (Simplex) 1 Optional Optional Optional Optional Optional
Bilge Pump (Electric Type) 1 Optional Optional Optional Optional Optional
Fresh Water Sub-tank 1 ü ü ü ü ü
Raw Water Pipe 1 Optional Optional Optional Optional Optional
Electric Device Battery Switch 1 ü ü ü ü ü
Charging Alternator 600W 1 ü ü ü ü ü
Starting Motor (1-pole type, 24V, 4kW) 1 set ü ü ü ü ü
Starting Motor w/harness (2-pole type) 1 set Optional Optional Optional Optional Optional
Battery (12V x 2) 1 set Optional Optional Optional Optional Optional
Remote Control Control Head (1-handle type) 1 Optional Optional Optional Optional Optional
2-Handle Head with Push-Pull Cable 5m cable length 1 set Optional Optional Optional Optional Optional
7m cable length 1 set Optional Optional Optional Optional Optional
10m cable length 1 set Optional Optional Optional Optional Optional
12m cable length 1 set Optional Optional Optional Optional Optional
Wireharness 6m length 1 Optional Optional Optional Optional Optional
7m length 1 Optional Optional Optional Optional Optional
10m length 1 Optional Optional Optional Optional Optional
12m length 1 Optional Optional Optional Optional Optional
Instrument Panel for Wheel House 1 Optional Optional Optional Optional Optional
Dual Type Instrument Panel 1 Optional Optional Optional Optional Optional
Connection w/harness for Dual Panel 1 Optional Optional Optional Optional Optional
Stop Motor Solenoid 1 Optional Optional Optional Optional Optional
Others Half Coupling 1 ü ü ü ü ü
Standard Spare Parts Kit 1 ü ü ü ü ü
Standard Tool Kit 1 ü ü ü ü ü
Operation Manual 1 ü ü ü ü ü
Parts Book for Engine 1 Optional Optional Optional Optional Optional
Service Manual 1 Optional Optional Optional Optional Optional
     
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B-Type

D-Type

4CHE3

6CHE3 / 6CH-HTE3 / 6CH-DTE3 / 6CH-UTE

Switch Unit . Key switch
. Alarm buzzer
. Alarm buzzer stop switch
. Illumination switch
Switch Unit . Key switch
. Alarm buzzer
. Alarm buzzer stop switch
. Illumination switch
Alarm Lamp Unit . Battery not charging
. C.W. high temp
. L.O. low pressure
. L.O. filter clogged
Alarm Lamp Unit with Alarm Monitor Device . Battery not charging
. C.W. high temp
. L.O. low pressure
. C.W. Level
. L.O. filter clogged
. Clutch oil pressure
Tachometer Unit . Tachometer with hour meter Tachometer Unit . Tachometer with hour meter
The engine stop button is effective when a stop motor solenoid is equipped with the engine. A stop solenoid is one of the optional parts. Sub Meter Unit . L.O. pressure meter
. C.W. temperature meter
. Boost meter (except 6CHE3)
    Clock Unit . Clock
  The engine stop button is effective when a stop motor solenoid is equipped with the engine. A stop solenoid is one of the optional parts.

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aBrochure - CHE(3) series

 
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4CHE3 - Performance Curves
6CHE3 - Performance Curves
6CH-HTE3 - Performance Curves
6CH-DTE3 - Performance Curves
6CH-UTE - Performance Curves
   
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Download CH3 Drawings - ZIP file [151KB]

Drawings are in Drawing Interchange Format (DXF)
 
 
Download free DXF Viewer here [6.7MB]
 
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