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Petrol Machines

G660, G760 and G860

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Operators Manual
G660,760,860
  • Croquet
  • Tennis
  • Football
  • Rugby
  • Cricket
  • Golf
  • Lawns

Features include the quick change cassette system giving ultimate flexibility and a single power unit solution for many day to day maintenance tasks such as scarifying, verti-cutting and brushing.

This versatility coupled with low ground pressure and manoeuvrability makes the machine the first choice for a wide range of conventional and modern sand based turf construction systems.

  • Open construction means superior sight lines for accurate line up of mower
  • Cast 3 section aluminium ribbed roller for positive traction in all conditions and mark free turning
  • Rubber covered rear roller option
  • Low vibration handlebars
  • Large diameter front roller with adjustable scraper for precision height of cut control
  • Grooved Weile roller with comb available
  • Honda power – ultimate easy start long life engine with Q9 low noise, low vibration technology
  • 13 quick change cassette options
  • G660 G760 G860 - Adjustment of cylinder to bottom blade easy and postive with a single spanner
  • G660 G760 G860 - Precise height of control which easily adjusts on both sides with a single spanner
  • G660 G760 G860 - Easy and comfortable to operate controls incorporating parking brake and all the latest safety features

Specification

G660, G760 & G860

  • SpecificationG660G760G860
    Cutting Width

    660mm (26")

    760mm (30")

    860mm (34")

    Cylinder

    6 or 8 bladed heavy duty spiral

    Height of Cut

    8 - 56mm

    Cutter Performance

    95 cuts/m (88 cuts/yd)

    Dimensions L x W x H

    1250 x 875 x 1020mm

    1250 x 975 x 1020mm

    1250 x 1075 x 1020mm

    Weight (inc Cyl)

    148kg

    156kg

    166kg

    Engine Petrol

    Honda 5.5hp GX160

    Honda 5.5hp GX160

    Honda 6.5hp GX200

  • G660 G760 G860 - Hi comfort fully adjustable trailer seat

    High comfort fully adjustable trailer seat

    Suspension trailer seat
    D025/S
    Self steer suspension seat
    D025/SRG

    G660 G760 G860 - G-Series Transport Carrier

    Transport Carrier

    Prevents damage to rollers
    430 D083
    510 D081
    610 D082

    G660 G760 G860 - Weile Roller with Comb

    Weile Roller

    With comb in lieu of standard
    D002/WR
    D001/WR

    Cassette Stand-4

    Casette Stand

    Storage unit suitable for 4 cassettes.

    Rubber coated rear roller

    Rubber coated rear roller (for power unit) in lieu of standard.

  • 6 Bladed Cylinder

    6 Bladed Cylinder

    High quality British Steel blades in a single spiral format. Incorporating easy to set cutter adjustment

    8 Bladed Cylinder

    8 Bladed Cylinder

    High quality British Steel blades in a single spiral format. Incorporating easy to set cutter adjustment

    11 bladed cylinder

    11 bladed cylinder

    High quality British steel blades in a single spiral format. Incorporating easy to set cutter adjustment.

    1mm/ 2mm scarifier

    1mm Scarifier

    1mm thick replaceable, wear resistent blades. 12mm spacing for thatch removal throughout season and autumn/spring renovation work.

    1mm/ 2mm scarifier

    2mm Scarifier

    2mm thick replaceable, wear resistent blades. 12mm thatch removal throughout season and autumn/spring rennovation work.

    2mm tungsten tipped scarifier

    2mm scarifier tungsten tipped

    The ultimate scarifier with tungsten tipped blades for heavy duty thatch removal throughout season and autumn/spring renovation work.

    Brush - Soft Bristle

    Brush - Soft Bristle

    For moss and debris removal and use as a light scarifier for final pre-cut preparation.

    hard bristle brush

    Brush – hard bristle

    For moss and debris removal and use as a light scarifier for final pre cut preparation.

    multidense brush

    Brush - Multi Dense

    For moss and debris use as a light scarifier for final pre cut preparation.

    standard verticutter

    Verti-Cutter

    1mm thick, 10 fingered replaceable discs. Regular use controls thatch, lateral growth and the ingress of unwanted species such as annual meadow grass.

    tungsten tip verticutter.jpg

    Verti-Cutter Tungsten Tipped

    The ultimate verticutter with tungsten tipped blades for heavy duty usuage.

    ds32145 sorrel roller

    Sorrel Roller

    Replaceable spikes relieves surface tension and allows penetration of air, water and fertiliser to the root zone.

    spring tine rake

    Spring Tine Rake

    Ideal for lifting lateral growth, helping to stand grasses up, removing dead matter or broken leaves following a match. Also helps to break up algae crust or help remove the glutinous slime that can sometimes appear on fine turf.

  • SFMA 2024 Website.jpg

    Dennis heading to Daytona

    Dennis Mowers will be continuing its annual tradition of exhibiting at the Sports Field Management Association’s (SFMA) Conference & Exhibition, which is taking place at Ocean Center, Daytona Beach, between 22 - 25 January 2024.

    View Article
    Hartpury College Dennis G860.jpg

    Reliable Dennis G860’s are Excellent for Hartpury

    Matthew Newman, Grounds and Sports Turf Manager at Hartpury University and Hartpury College in Gloucester, claims that his fleet of Dennis G860 mowers are reliable, robust, and ergonomically excellent.

    View Article
    Dennis G860 - King of the Kassam.jpeg

    Dennis G860 - King of the Kassam

    The Dennis G860 has ‘everything you need’ in a cylinder mower according to Kieron Jennings - Head Groundsman at Oxford United FC.

    View Article
    Article - There's-no-better-finish-than-a-Dennis-finish-for-Dartford-FC-head-groundsman-Jay-Berkhauer

    There’s no better finish than a Dennis

    Jay Berkhauer, Head Groundsman for Dartford FC, says that the Dennis G860 cylinder mower is hugely versatile and offers an unrivalled finish.

    View Article
    Article - Ravens-rave-about-the-Dennis-G860

    Ravens rave about the Dennis G860

    Sean Kauffman, Head Groundskeeper for National Football League (NFL) side Baltimore Ravens has revealed how two Dennis G860 cylinder mowers have significantly helped the grounds crew to improve the standards of the pitch at the M&T Bank Stadium.

    View Article

G-Series

Testimonials

  • ''We use the G860 for cutting the outfield and sometimes we use it on the square and nets as well. We’ve got a verticut cartridge for it too, which is ideal for getting thatch out of the outfield and standing up the lateral growth on the square. We use a trailing seat on it for cutting the outfield – it helps us get the job done more quickly and also saves our legs. It’s our first-choice mower now because of its reliability, robustness and quality of cut.”

    Callum Lewin

    Head Groundsman Leicestershire County Cricket Club

  • "The G860 with the brush cassette has been a game-changer for us. It’s incredibly comfortable to use and makes pitch maintenance more efficient than ever. As Head of Maintenance at Moca FC Stadium in the Dominican Republic, I rely on it to keep our playing surface in top condition and it delivers every time."

    Yeremi Guerrero

    Head of Maintenance at Moca FC Stadium

  • “Once we trialled the Dennis G860’s, we just had to have them. They are lot more robust, more sturdy, easier to use and more manageable. For me the usability is one of its best features – they are ergonomically excellent, and everything is in the right place in terms of controls. It does a brilliant job every time and it isn’t complicated. I think there are quite a few machines out there that are perhaps over engineered. Dennis keeps it simple and straight to the point. The G860’s present the pitch brilliantly and they provide a more defined stripe than other mowers we have used. We seem to cover the same area more quickly with the Dennis G860’s. Previously we were only able to single cut and would never have enough time in the day to double cut, whereas we can do that now. We’ve had the Dennis G860’s for a couple of years now and nothing ever goes wrong with them. They are incredibly reliable.”

    Matthew Newman

    Grounds and Sports Turf Manager at Hartpury University and Hartpury College in Gloucester,

FAQS

What types of sports and turf surfaces are these mowers suitable for?

Croquet, Tennis, Football, Rugby, Cricket, Golf, High-quality lawns

What are the main differences between the G660, G760 and G860?

G660: 660mm (26") cutting width – ideal for smaller turf areas or where high manoeuvrability is needed.

G760: 760mm (30") cutting width – a balance of coverage and agility for medium-sized turf surfaces.

G860: 860mm (34") cutting width – perfect for large turf areas where maximum productivity is key.

Do the G660, G760 and G860 allow interchangeable cassettes?

Yes there are 13 cassette options for tasks like scarifying, verti-cutting, brushing and more, all from a single power unit.

What engines do the G660,G760 and G860 use?

G660 & G760: Honda 5.5hp petrol engine (GX160), G860: Honda 6.5hp petrol engine (GX200)

What is the cutting height range?

All models offer a height of cut from 8mm to 56mm, adjustable on both sides with a single spanner.

What is the weight of each model?

G660: 148kg (including cylinder) , G760: 156kg, G860: 166kg

What rear roller is fitted?

Cast 3 section aluminium ribbed roller for positive traction in all conditions and mark free turning- OPTIONAL rubber covered rear roller

What Optional extras are available?

Rubber coated rear roller, suspension trailer seat, self steer suspension seat, Weile roller with comb, transport carrier