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Caution
General Information
Preparations For Starting
Before Starting
Starting Engine
Engine Break-in and General Running
Stopping the Engine
Decompression Lever
Instrument Panel
Wiring Diagram
Preparing Engine for Storage
Preparing Engine for Spring Service
Fuel Injection Timing
Diesel Valve Timing
Adjusting Fuel Timing
Decompression Device Adjustment
Fuel System
Fuel Bleeding
Oil Filter Change
Sea Water Pump and Impeller Replacement
Model 15 Sea Water Circulation Diagram
Model 12, 18, 20, 25, 25XP, 30, 40 & 50 Water
Fresh Water Circulation Diagram

Hurth Transmission
Periodic Service Chart for Engine
Marine Engine Warranty - Limited

Engine Specifications and Images
(by engine model)

M2-12
M3-20
M4-30
M-25XP
M-35
M-30
M-40
M-50
M-12
M-15
M-18
M-20
M-25

 

Electrical Equipment12 Volt - 51 Amp W/GIow Plugs(SAE 30 HD. (CD) or 10W40) CAUTION:FILL ONLY TO FULL MARK ON DIPSTICKLubrication (Trans.)FILL TO FULL RING ON DIPSTICK
UNIVERSAL MODEL M-30 SPECIFICATIONS
Pictorial views of this engine at the bottom of page.
Horsepower24 @ 2800
No. of Cylinders3
Bore x Stroke3.00 x 3.23
Cubic Inch68
Maximum RPM2800
Cruising Range (Approx.)2000-2400 RPM
Compression Ratio21:1
Lubrication (Eng. Approx. Ots)5.0 to 5.5
(Type AFT A or GM-DEXRON - II Donot mix different oils)
Transmission Reduction2:1
Coolant FWC (50/50 Solution Approx.)6 Quarts
Exhaust Flange 1 N.PI
Fuel Type #2 Diesel
Fuel Filter P/N 298854
Oil Filter P/N 300209
Eng. Operating Temp. Degrees F. 165 to 195
Propeller Rotation Right Hand
Weight (lbs.) 425 lbs.
Injection NozzleP/N 298787 & 298788
Engine is governor controlled to prevent overspeed. It is recommended to carry the following extra parts should the need arise: V-Belt, Sea Water Pump Impeller, Fuel & Lube Oil Filters, 1 Ot. of Trans. Oil, 2 Ots. Lub. Oil and 1 Gal. 50/50 Coolant.  All pictorial views and specifications subject to change without notice.

Image is for illustration only.  Components may not be exactly as pictured.
The Universal M-30 utilizes three flex mounts and not four as shown in the picture below.

M-30 Engine Image - Copyright 2000 All Rights Reserved TOAD Marine Supply