I need a group 27 battery for a 70 kw generator. Which would be better...a marine battery or industrial?

Jack' Small Engines, or the maker.

Kohler GENERATOR Parts Lookup by Model

https://www.jackssmallengines.com > oem-cross-reference
Parts lookup for Kohler power equipment is simpler than ever. Enter your model number in the search box above or just choose from the list below.

Parts and Service Landing ' Kohler Power

https://kohlerpower.com > generators > industrial > part...
Rest assured, KOHLER® genuine parts are built specifically for your industrial, marine or home generator-and will be available when you need them.

• 
  

  Parts ' Kohler Marine

  https://kohlerpower.com > marine > parts
  GENUINE PARTS AND ACCESSORIES. Rest assured, KOHLER genuine parts are built specifically for your marine generator - and are available when you need them.

Kohler Generator Parts

https://www.generator-parts.com > kohler-parts
Kohler generator repair parts. Complete parts listing.

Depends on power requirement. My whole house uses approx 4 kW to run air con and rest of the house power. 19 x 350 solar panels generates 1 kw to 6.5 kw per hour through a 6 kw inverter.
The variance comes from the sun is not always out, or behind clouds and the panels don't face east and west to capture the morning and evening sun.
They are mono crystal which generate about 1 to 1.6 Kw in cloudy conditions.

As I am on the power grid the excess power is feed back to the power company who pay me 6c per k/w that I feed in during sunny days and then charge me 26c per k/w in peak times when it is dark !
Today I got 40 kw/h generated for the day which with feed in tariff is $2.60 as it was sunny. . I could run the air con on 10 kw/h from the power company in the dark , if the a/c used 2 kw I could run it for 5 hours for free.
Where you run into problem is that on a cloudy day you might get 1 k/w per hour . This is not a problem if you use mains power from a power line supplier as it suppliments any short fall. If you are on a no grid connected system you may need to consider Battery Storage as well to charge up when the sun is out and then it supplements the power to your house when it is cloudy or dark.
The solar panels would need to generate enough power to run the house and to charge up the battery system if used.
Batteries have a limited life of 10 years and usually use lithium Phosphate batteries . You tube has many videos on battery systems and off grid solar setups. However batteries are a changing technology with Electric Vehicles becoming more common.

Start circuit bypasses the resister which reduces voltage when running so as to increase amps for better fuel burn. Engine starts on 12 volts for hotter starting spark, but when start mode is released, voltage to coil comes from a circuit which has resistor in it somewhere, often inside a wire so you don't even know it is there. A break in that circuit will act as yours does.

1 cubic inch ( cu.in. ) = 16.387064 cubic centimetres ( cu.cm. cm3 or cc )
1000 cc = 1 litre
1 hp (UK) = 0.7457 kilowatt ( kW )
rpm = revolutions per minute,

-------------------------------------------------------------------------------------
all motors are different
Model car 2 stroke diesel - Rossi 236R21 3.5 3.45 42,600 1.0145 Top fuel dragster V8 supercharged 8194 8000+ 8 200 1.0243 F1 racing car 1987 turbo - qualifying 1494 1400+ 14 000 1.0671 F1 racing car 1987 turbo - race trim - Honda 1494 1000 13 000 1.4940 Honda TT race bike 125 47 2.6596 Model aircraft - Chinese contest diesel 3.5 1.3 26 000 2.6923 Model aircraft - Typhoon Russian diesel 2.47 0.82 27 200 3.0122 BMW F1 racing car 2003 - P83 2998 920 19 200 3.2587 Motocross bike 125 33 3.7879 Honda - stock road bike 125 33 3.7879 F1 racing car 1995 - no turbo 3000 750 4.0000 Model aircraft OS glowplug 5.23 1.2 22 000 4.3583 Junior motorbike - reed valve 125 28 14 000 4.4643 Model aircraft OS glowplug 8.17 1.8 17 000 4.5389 Model aircraft OS glowplug 9.95 1.9 16 000 5.2368 Superbike 600cc Class 599 112 5.3482 Superbike 1000cc Ducati FO3 999 186 13 000 5.3710 Kawasaki ZX-10R - road trim 998 182 11 700 5.4835 Junior - road bike 125 20 6.2500 Model aircraft OS glowplug 1.76 0.27 17 000 6.5185 Lotus 2-Eleven - supercharged 1798 252 8 000 7.1349 Ford Escort 2.0L COSWORTH 2000 225 8.8889 Junior - de-tuned 125 13.5 9.2593 Fuji ATM 50 5.2 10 000 9.6154 Scooter 60 5.8 8 500 10.3448 Street bike 50 4.2 7 000 11.9048 Ford Escort 1.6L RS TURBO 1600 130 12.3077 Tractor pulling Allison V12 28000 2200 12.7273 Honda Accord 1800 136 13.2353 Ford Escort 2.0L 16V RS 2000 150 13.3333 Ford Mondeo 2000 150 13.3333 Ford Escort 2.0L RS 2000 149 13.4228 Honda Accord 2000 147 13.6054 Ford Escort 1.8L 16V XR3 1800 130 13.8462 Honda Accord 1600 115 13.9130 Fuji ATM 32 2.2 10000 14.5455 Mitsubishi Carisma Classic 1600 110 14.5455 RR Griffon 58 - Shackleton aircraft 37000 2455 15.0713 Ford Escort 1.6L 16V 1600 105 15.2381 Ford pickup/utility 2000 130 15.3846 Ford saloon 2000 130 15.3846 Ford Thunderbird 3900 252 15.4762 Mitsubishi Carisma Classic 1400 90 15.5556 Ford Escort 1.8L 16V 1800 115 15.6522 Mitsubishi Carisma Classic 1300 82 15.8537 P&W Wasp Major - race tuned 71500 4500 15.8889 Rolls Royce Merlin / Packard V-1650 27000 1695 15.9292 Marine outboard 815 50 16.3000 Chainsaw 36 2.2 16.3636 Ford Fiesta 1.25L 16 valve 1250 75 16.6667 Honda Jazz 1399 83 16.8554 Ford Escort 1.8L 8V 1800 105 17.1429 Marine outboard 105 6 17.5000 Ford Escort 1.6L 8V 1600 90 17.7778 Chainsaw 25.6 1.4 18.2857 Marine outboard 1298 70 18.5429 Ford Escort 1.4L 8 valve 1400 74 18.9189 MGB 1798 95 5400 18.9263 Ford pickup/utility 4000 210 19.0476 Jaguar 3.4 3442 180 5300 19.1222 Ford saloon 3000 155 19.3548 Austin Healey 3000 Mk3 1963 2912 150 19.4133 Ford Mustang 3800 193 19.6891 Ford pickup/utility 4000 203 19.7044 Ford pickup/utility 4600 232 19.8276 Marine outboard 597 30 19.9000 Allison V12 in P38 aircraft 28000 1400 4000 20.0000 Marine outboard 302 15 20.1333 Marine outboard 815 40 20.3750 Chainsaw 40.8 2 20.4000 Pratt & Whitney Wasp Major, radial 28cyl 71500 3500 2800 20.4286 Chainsaw 32.8 1.6 20.5000 Ford pickup/utility 5400 260 20.7692 Ford pickup/utility 4200 202 20.7921 Ford pickup/utility 5400 255 21.1765 Marine outboard 1298 60 21.6333 Ford pickup/utility 4200 191 21.9895 Ford Fiesta 1.1L 8 valve 1100 50 22.0000 Marine outboard 597 25 23.8800 Austin A35 and Morris Minor 948 37 4800 25.6216 Rolls Royce Merlin Mk.II 27000 1030 26.2136 Ford pickup/utility 4600 175 26.2857 Briggs & Stratton Industrial engine 465 15.5 30.0000 Briggs & Stratton Industrial engine 480 16 30.0000 Marine outboard 302 9.9 30.5051 Briggs & Stratton Industrial engine 319 8 39.8750 Briggs & Stratton Industrial engine 148 3.5 42.2857 Ships turbo two stroke diesel, 14 cyl 25498000 108,920 102 234.0 Related pages " Home page
" Info on SI Units
" SI Unit Descriptions
" SI Derived Units
" SI Prefixes (mega, giga)
" Imperial/UK Units
" Scientific Notation
--(i.e. what is 1.00E+09) Detail pages " Feet to metres calculator
" Metres to feet calculator
" British Thermal Units Btu
" Density of bulk materials
" Density of liquids
" Specific Gravity of water
" Density of metals
" Density of woods
" Kitchen metric
" Medical metric
" Parts per million - ppm
" Clothing metric
" Yarn metric
" Time
" cc to hp
" Paper & Envelopes
" Gross to Nett price
" Nett to Gross price
" Add on Commission
" Sheet metal swg - mm
" Wire & rod swg - awg
" Electrical wire swg - awg
" Steam tables (4 pages)
" Watts, amps, volts, ohms
" M Threads & spanners
" Self tapping screws
" M tap & pilot drill sizes Other useful sections
" A guide to earning money
on the internet
" Business Loans
" Business Insurance
" The Times Tables
" The Sudoku Solver
" The Futoshiki Solver
" The Sujiko Solver
" The Twizzle Rig
" Tools for Gamers

there are some magnets behind the flywheel to cause the battery charging system to recharge the batt. sometimes they come unbonded/loose from the flywheel and cause the engine to become hard to turn. I would start there first.

Dear, about generator tech problems, kindly visit support blog. Generator Set Diesel Generator Cummins Volvo Perkins Generator

Valve seats, valve integrity, intake seals. Perform a leakdown test to further diagnose

are you still looking for diagrams etc on the raytheon mariner pathfinder? If so what size/power etc of radar are you talking about? I have some parts & diagrams for the old S band and X band 25 kw & 60 kw.

GENERATORS DO NOT HAVE OIL IN THEM THE MOTOR ATTATCHED TO IT DOES WHAT TYPE OF ENGINE,? IF ITS A HONDA THE OIL LEVEL IS THE BOTTOM LIP ON THE BUNG AT THE BASE OF THE ENGINE