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Marina Systems Biomulch 51 SB BS675EXi Self-propelled Lawn Mower with Briggs&Stratton Engine

Questions & Answers (6)
ID: K500854

EAN: 9993089178184


Marina Systems Biomulch 51 SB BS675EXi Self-propelled Lawn Mower with Briggs&Stratton Engine
+400 sold
2 bottles of 600 ml engine oil each2 bottles of 600 ml engine oil each
Engine first maintenance kitEngine first maintenance kit
Protection kit: gloves, googles, ear defenders, Agrieuro headscarf for free!Protection kit: gloves, googles, ear defenders, Agrieuro headscarf for free!
Oil engine replacement kitOil engine replacement kit
Side discharge
Mulching cutting system
Standard equipment
Body material
Enamelled steel
Motor brand
Motor Model
Cubic capacity
163 cm³
Nominal power
5.5 HP
Max. recommended area
1700 m²
Cutting width
51 cm
Rear-wheel drive
Cutting adjustment
1 lever
Finned blade
Optimised mulching cutting
Manufacturing country
Product Features
GX Biomulch 51 SB BS675
Body material:
Enamelled steel
Body thickness:
1.8 mm
Operating mode:
Spark ignition
Rear-wheel drive
Housing width:
53 cm
Fixed front tires:
Side discharge cutting system:
Standard equipment
Mulching cutting system:
Standard equipment
Cutting system:
2 in 1 - Side discharge + Mulching
Max. recommended area :
1700 m²
Recoil start:
Starting mode:
Manufacturing country:
Motor data
Motor brand:
Briggs & Stratton
Motor Model:
Motor type:
Cubic capacity:
163 cm³
No. of cylinders:
Nominal power:
5.5 HP
Rated power (HP):
3.66 HP
Power supply:
Overhead valve OHV
Engine lubrication system:
Oil bath
Noise level:
98 dB(A)
Manufacturing country:
Transmission data
Gear shifting system:
Single speed
Throttle lever:
Steel gears
No. of forward speeds:
Wheel drive:
Operating mode:
Lever on the handlebar
Cutting data
Body material:
Enamelled steel
Cutting width:
51 cm
Blade type:
Finned blade:
Optimised mulching cutting
Safety blade brake:
Cutting adjustment :
1 lever
Max. cutting height:
70 mm
Min. cutting height:
25 mm
No. of cutting positions:
Washing joint:
Cutting width:
51 cm
Grass discharge side deflector:
Recoil start system (with rope):
Rear wheels size:
210 mm
Front wheels size:
185 mm
Wheel Type:
ABS pattern
Rubber-coated soft grip:
Folding/removable handle/s:
Free gifts/extra features
Mulching kit:
On standard equipment
Engine oil bottle for free:
Instructions manual:
Dimensions and logistics
Product dimensions in cm (L x W x H):
115x55x97 cm
Net weight:
30 Kg
On pallet
Original packaging/s dimensions in cm (L x W x H):
93x56x42 cm
Assembly time:
15 minutes
Out of stock
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€ 591,18
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Biomulch 51 SB BS675EXi lawn mower

The Ma.Ri.Na Systems Biomulch 51 SB BS675 EXi mulching lawn mower is very popular as it is a lawn mower specifically designed for operating with the mulching cutting system. It is provided with a steel housing, ideal for very intensive and continuous use.

The self-propelled system on the rear wheels allows reducing the Operator’s fatigue during use and optimises its manoeuvrability.

The quality of mulching obtained with this lawn mower is undoubtedly higher to other lawn mowers equipped with more cutting systems, also thanks to the specific mulching blade that creates an air vortex.

MaRiNa System lawn mowers are highly heavy-duty machines and are now recognised as a benchmark in the industry.

The quality of all its components and the care of details certainly make the difference between this lawn mower and other models on the market.

Briggs & Stratton 675exi engine

The Briggs & Stratton 675exi Quantum Series is a high-performing professional engine which guarantees high reliability and durability, and its 163cc makes it suitable for works where fair power is required.
It is a professional-level engine that ensures high reliability and durability.


Engine type: 4-Stroke - OHV - single cylinder
Cylinder type: aluminium
Cubic Capacity: 163 cm³

The 4-stroke petrol engine with OHV (overhead valve) ensures high performance.


Please carefully read the instructions manual before starting the unit.

Nominal Power: 5.5 Hp
The correct term would be "Commercial” Power, meaning the standard definition used until a few years ago by all well-known engine manufacturers.

* This technical feature is the one indicated in the main sales channels, even if it is higher than the real power of the engine.

Rated power: 3.66 Hp
It refers to the real power of the engine. This is the power indicated as official in the manual or in the technical data of the engine manufacturer.

* This technical feature may vary from a an engine model to another according to the rotation speed provided by the manufacturer.

Controls and adjustments

Handlebar height and tilt adjustment: the system for adjusting the height and tilt of the handlebar is extremely precise and sturdy.

The controls are all placed on the lawn mower dashboard, where where it is also possible to engage the blades, activate the drive control and the forward speed adjustment.

Focus on the wheel drive engagement lever: black lever behind the handlebar

Focus on the blade rotation engagement lever: white lever in front of the handlebar.

Throttle lever

Rear wheel drive

Equipped with a sturdy heavy-duty cast aluminium wheel drive with hardened steel gears in an oil bath.

Reliability and durability are also guaranteed.

The rear wheel drive allows even to easily perform the longest mowing sessions.

Rear wheels diameter: 215 mm

Front wheels diameter: 180 mm

2 Cutting systems

This system allows cutting grass without catching it inside the collector, and crushing the clippings into a fine powder before dropping them on the lawn.

As it is specifically designed to perform this cutting system, this lawn mower provides a much higher quality product than the one provided by lawn mowers performing more than one cutting system.

WHAT IS MULCHING: this grass mowing system allows crushing grass clippings and dropping them on the ground. The resulting grass particles are so small, they will be barely noticeable on the lawn. This eliminates the problem of its disposal (reducing any effort and shortening the time-saving). Moreover, grass clippings will break down into nutrients and water for the lawn (grass is 80% water) and will thus ensure a perfectly balanced biological cycle. However, it is worth remembering that, to ensure the greatest mulching results, the lawn should be irrigated and the grass needs cutting at least once a week.

CONVERSION TO THE SIDE DISCHARGE: simply unscrew the side plug and enter the proper deflector to operate with the side discharge cutting system.

Mulching blade and steel housing

51 cm real cutting width

The blade is made of universal hardened steel, suitable for performing a high quality mulching cutting system. The special blade fins creates an air vortex which helps shredding the freshly cut grass even finer. It can perform excellent cutting operations even in tall, damp grass.

Double cutting power
The special finned blade ensures:

- a high-quality mulching, creating an air vortex that forces grass fragments to fall back onto the blade cutting edge and be thrown back up, resulting in very fine shredding (similar to a centrifugal effect)

- high-quality cutting results, thanks to the hardness of the steel and to the special sharpening, which is truly superior.

The steel housing guarantees high sturdiness and a long service life.

Focus on the quick washing joint.

Centralised cutting height adjustment

‎This lawn mower is equipped with 6 cutting height adjustments, from 25 mm to 70 mm.

The centralised cutting height adjustment is incredibly fast and intuitive.

Simply grab the proper lever, pull it and lift the machine until it reaches the desired height.

The machine is fitted with rubber wheels:

Rear wheels diameter:210 mm

Front wheels diameter:185 mm

Free items & Standard equipment

1° FREE ITEM: Spare Parts and Maintenance Kit for B&S Engine

Spare parts and maintenance tool kit for the BRIGGS & STRATTON engines.

  • 550E series
  • 575E series
  • 625E series
  • series 675 EXi

WARNING: This kit can’t be used for other brands or models on market. We don’t provide different kit from the ones offered on our website. We do not provide sets different from those you already see published on this site.

The kit includes:

  • Professional spark plug for the engine.
  • Multifunctional spark plug wrench. Specific for lawnmowers, rough cut mowers, scythe mowers, etc.
  • Engine air filter.
  • Specific syringe for oil suction.
  • Waste oil collection bottle for easy waste oil disposal.
  • Funnel oil draining and refilling.

2° FREE ITEM: Safety Kit


Protective earmuffs to work with maximum comfort
The ear protection as to be the one recommended for all working conditions. Indeed, the earmuffs provided on standard kit are specifically designed to protect the operator against the noise coming from the brush cutter.

Protective goggles that can be used as an alternative to the visor mask.
Protective mask goggles in polycarbonate, equipped with anti-fog and anti-scratch panoramic screen. The ventilation is ensured thanks to the holes made on the frame to avoid obfuscation and to improve comfort of use.

Dust mask suitable for mowing in particularly dusty environments.

Cotton gloves

3° FREE ITEM: 600 ml Oil Bottles

COMPLIMENTARY: two sae 15W 40 600 ml oil bottles. Specific lubricant for 4-stroke engine-powered gardening machinery featuring up to 10 HP. Good cleansing and dispersion.

Free items included

The lawn mower is shipped in its original packaging.

Deflector for side discharge system

The Instructions manual is included in the packaging.

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