JH3/JH4 Series
 
 
Yanmar JH3/JH4 Turbo Series Marine Diesel Engines
(75 - 125hp)
 
Compact mid-range marine power plants
The new 4JH4-TE (turbo), the 4JH4-HTE (intercooler-turbo) and the 4JH3-DTE (hi-power intercooler turbo), create a family of three lightweight, user-friendly, clean, thrifty and reliable marine diesels.

Lightweight
Compact design iron block and head feature close space cylinders to save space and weight. Extensive use of aluminium alloys in oil pan, covers, and in many parts make for good weight savings.

 User friendly
Sophisticated engine mounts, a range of velvet smooth transmissions, micron-precision fuel system components, close attention to bearing tolerances and accurate balance of moving parts make for low-noise, low vibration, low emission, low downtime and easy-to-live-with engines.

 Clean
Inlet swirl design improves fuel-air mix, extra high pressure fuel injection system with micron-precision injectors and close attention to coolant flow minimizes hot and cool spots - these are just some of the ways Yanmar improves combustion efficiency.

 Thrifty
Diesels are synonymous with fuel economy. But being a Yanmar also means that long years of experience in building some of the world's most efficient diesel, also the extensive input from our large and ultra-modern research facilities have been incorporated into every new Yanmar engine.

 Reliable
Long, trouble-free engine life is a common reason for choosing Yanmar. Worldwide parts backup and quick response times make for minimum downtime. These engines are again and again the favoured choice of bluewater yachtsman and boat owners the world over.		  

Why choose Yanmar?


[Click image to enlarge]


 
 
  4JH4TE 4JH4-HTE 4JH3-DTE
Class 4JH4-TE 4JH4-TBE 4JH4-THE 4JH4-HTE 4JH4-HTBE 4JH4-HTHE 4JH3-DTHE
Configuration 4-stroke, vertical , water cooled - direct injection
Cylinders 4 in-line 4 in-line 4 in-line
Maximum Output 75mhp @ 3200rpm 110mhp @ 3200rpm 125mhp @ 3800rpm
Cooling System Freshwater cooling by centrifugal freshwater pump and
rubber impeller sea water pump
Bore x Stroke 84 x 90 mm 84 x 90 mm 84 x 90 mm
Displacement 1.995 litres 1.995 litres 1.995 litres
Aspiration Turbocharged Turbocharged with intercooler
Dry Weight 235 kg 237 kg 237 kg 245 kg 247 kg 247 kg 259 kg
Reduction (FWD) & Model of Gear ZF30M
2.15 / 2.70 		KM4A2
1.47 / 2.14 / 2.63 		ZF25A
1.93 / 2.48 		ZF30M
2.15 / 2.70 		KM4A2
1.47 / 2.14 / 2.63 		ZF25A
1.93 / 2.48
Direction of Rotation C/S   CCW viewed from stern  
P/S CW Bi Rotation Bi Rotation CW Bi Rotation Bi Rotation
   
 

  Component

4JH4-TE
4JH4-HTE
4JH3-DTE
Installation Flexible engine mounts x 4 STD
Propeller shaft half coupling (slit type) Optional
Propeller shaft half coupling (straight rough bore) STD
Slow speed valve A2-type for KMH4A Optional
Neutral safety switch for KMH4A Optional
Neutral safety switch for KM4A Optional
Cooling Exhaust water mixing elbow, L-type STD
Exhaust water mixing elbow, U-type Ø 76 (3") Optional
Kingston cock Optional
Sea water strainer Optional
Lubrication Lube oil evacuation pump - rotary type Optional
Lube oil dipstick opposite side of engine Optional
Starting & stopping Engine stop solenoid (electric) STD
Additional 12V-60A Alternator kit (JH4 Only) Optional
Cold starting aid (air heater) Optional
Electrical and
Instrumentation		 Alternator, 12V-80A STD
Electric type bilge pump, 12V Optional
New B-type instrument panel (VDO type) JH3/4 series Optional
New C-type instrument panel (VDO type) JH3/4 series STD
Meter sensor assembly for dual instrument panel
(New C+C type)		 Optional
Connect wire harness for dual instrument panel Optional
Extension wire harness - 4m or 6m 6m STD
Starter relay (for wire harness longer than 6m) Optional
Battery switch Optional
Control Push-pull type remote control cable
2 pcs/unit (MORSE:33C) 4m		 Optional
Push-pull type remote control cable
2 pcs/unit (MORSE:33C) 7m		 Optional
Side-mount type single control head (MORSE:MV) Optional
Top-mount type single control head (MORSE:MT3) Optional
Others Crankshaft V-pulley (Material: FC) for front PTO Optional
   
   
 

Brochure - 4JH4TE
Brochure - 4JH4HTE
Brochure - 4JH3DTE

 

Line drawing - 4JH3DTE - KMH4A1
Line drawing - 4JH3DTE -ZF25A
Line drawing - 4JH4TE - ZF30M
Line drawing - 4JH4TE - KM4A2
Line drawing - 4JH4HTE - ZF30M
Line drawing - 4JH4HTE - KM4A2
 



Download - 4JH4TE - ZF30M Drawings - ZIP file
Download - 4JH4TE - KM4A1 Drawings - ZIP file
 Download - 4JH4HTE -ZF25A Drawings - ZIP file
Download - 4JH4HTE - ZF30M Drawings - ZIP file
Download - 4JH4HTE - KM4A1 Drawings - ZIP file
Download - 4JH4HTE - KMH4A1 Drawings - ZIP file
Download - 4JH3DTE - ZF25A Drawings - ZIP file
Download - 4JH3DTE - KMH4A1 Drawings - ZIP file




Drawings are in Drawing Interchange Format (DXF)
 

Download free DXF Viewer here [6.7MB]
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