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Summary of Contents for Dennis G680
- Page 1 DENNIS G680 MOWER INSTRUCTION MANUAL Publication No. G680ins(Wargraves 3 Roller section).doc DENNIS, Ashbourne Road, Kirk Langley, Derby, DE6 4NJ Telephone: 01332 824777 Fax: 01332 824525 e-mail sales@dennisuk.com spares@dennisuk.com e-mail G680WG_Instructions.doc...
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Page 2: Table Of Contents
C O N T E N T S Page Introduction Description Important Safety Instructions Machine Familiarisation- CONTROLS Operating Instructions Engine Information General Adjustments Routine Maintenance General Lubrication Storage G680WG_Instructions.doc... -
Page 3: Introduction
DENNIS 27" CYLINDER MOWER MODEL G680 INTRODUCTION The reliability and quality of performance of the DENNIS G680 depends upon some simple care maintenance carried out regularly. This manual has been prepared to allow the user to carry out all such work. -
Page 4: Important Safety Instructions
DENNIS. Be familiar with the controls and the proper use of the equipment. On the job training courses are available from Dennis. Contact the factory or you dealer for details. Never allow children or people unfamiliar with these instructions to use the mower. Local regulations or insurance may restrict the age of the operator. - Page 5 OPERATION Do not operate the engine in a confined space where dangerous CARBON MONOXIDE fumes can collect. Mow only in daylight or good artificial light. Avoid operating the machine in wet grass where feasible. Always be sure of your footing on slopes. Walk.
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Page 6: Machine Familiarisation- Controls
IMPORTANT INFORMATION Please read all the details in this section and familiarize yourself and all machine operators with the contents. CONTROLS All controls with the exception of the choke and starter chord are located on the handlebar console. Decals indicate the location and operation of each. SAFETY LEVER Located on then right hand side of the upper handlebar this L shaped black lever is made from flattened tubular section. -
Page 7: Operating Instructions
towards the upper handlebar and can be "clamped " under ones hand onto the handlebar for comfortable operation. CUTTER CLUTCH Located on the left hand side of the console with a red lever. Forwards to engage, back to disengage. The lever is interlocked with the safety lever and the engine will cut out if engaged without firstly operating the safety lever. -
Page 8: Engine Information
ENGINE INFORMATION The G680 is fitted with a Kubota GH250 petrol engine. single cylinder, overhead valve, 4 stroke, forced air cooled engine. For full specifications please refer to the manufacturers instruction manual included. -
Page 9: General Adjustments
Overhaul Every 500 hours GENERAL ADJUSTMENTS The DENNIS G680 is supplied with a tool wallet containing set spanners and a plug spanner. Sizes for adjustment are quoted in mm. SHEAR BLADE ADJUSTMENT. Correct setting of the shear blade is essential to effective cutting of grass. If the set is too far away it will result in bruised grass and poor results. - Page 10 The cutting cylinder should just brush against the shear blade. The correct setting is an audible whisper of cylinder moving against the shear blade - we suggest gloves be worn for this part of the operation. The unit should just cut 80 g.s.m. (photocopy paper) along its length.
- Page 11 Ensure that the indicator points are even on both sides when related to the series of holes. Failure to adjust evenly will lead to an uneven cut to the turf. A setting bar is available from DENNIS for ease of setting accurately. Test at both ends of the cylinder.
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Page 12: Routine Maintenance
DRIVING BELTS ROLLER CLUTCH The Dennis G680 has three belt systems on the machine. The primary drive belt for the roller clutch is located adjacent to the engine under the cover. This belt is of a special construction and not a normal vee belt. The tensioner pulley moves up onto the belt via a cable control. - Page 13 Belt tension is the single most important factor necessary for long, satisfactory service life of any belt drive. Under-tensioning leads to belt slip causing rapid wear; over tensioning means excessive strain on belt and bearings. Between these two extreme conditions is a reasonable range of tension within which the belt will operate.
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Page 14: General Lubrication
CUTTER CLUTCH This is a single belt system under the chaincase on the sided of the machine. These belts (2 off) are of a special construction and are not normal vee belts. The tensioner pulley moves up onto the belt via a cable control. This is adjustable using a 13 mm spanner on the adjuster block on the left hand sideplate of the machine. -
Page 15: Storage
2 weeks the carburetor is run dry. Allow the engine to run out of fuel with the fuel tap switched off. If you are in any doubt as to safe operation, adjustment or maintenance call your dealer or the DENNIS works. G680WG_Instructions.doc...
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