Dennis G26D Instruction Manual Download Page 12

11

Routine Maintenance

 

ENGINE 

The machines are fitted with a Honda GX160 or GX200 petrol engine. 

For full specifications please refer to the manufacturers instruction manual included. 

Area 

Maintenance 

First 4 Hours 

First Month / 20 Hours 

6 Months / 100 Hours 

Engine Oil 

Check Level 

Engine Oil 

Change 

Air Filter 

Check Condition / clean 

Spark Plug 

Change 

OIL / FUEL & QUANTITY 

– SPARK PLUG TYPE 

Engine Model 

Oil Types 

Quantity (Ltr) 

Fuel Type 

Capacity (Ltr) 

Spark Plug 

Type 

Electrode 

Gap (mm) 

Honda GX160 

& Gx200 Petrol 

SAE 10W-40 

0.6 

unleaded 

3.1 

BM6ES or 

BPR6ES 

0.7 – 0.8 

ROLLER CLUTCH 

The primary rear roller drive belt is shown in the image 

opposite. This is a special Kevlar V belt design for clutching 

applications. The Rear roller clutch pulley moves in to tension 

the belt via control cable. The tension in the cable can be 

adjusted as shown [13mm spanner]  

Under tensioning this belt will lead to slip and cause rapid 

wear. Over tension will put excessive strain on the belt and 

bearings. 

Under tensioning leads to belt  slip, causing rapid wear; over 

tensioning means excessive strain on the belt and bearings. 

Between these two extreme conditions is a reasonable range 

of tension within which the belt will operate. Belt tension can 

be assessed by the ‘deflection’ method. 

NOTE – 

CORRECTION CAN BE MADE BY ADJUSTMENT OF THE BELT TENSIONERS. REMOVE 

  THE DRIVING BELT COVER. THE BELT TENSIONERS ARE RETAINED IN A SLOTTED 
  HOLE ALLOWING ADJUSTMENT TO BE MADE ONCE THE HOLDING HEXAGON 
  HEADED BOLTS HAVE BEEN LOOSENED. WHEN ADJUSTED CORRECTLY THE 
  TENSIONERS SHOULD STILL ROTATE EASILY WITH FINGER PRESSURE. ENSURE 
  THE TENSIONER BOLTS ARE SECURE BEFORE REPLACING THE COVER.

 

“Belts will be sufficiently tensioned if the deflection force applied at mid span to produce a deflection equal to 16mm per m

eter of 

span distance falls between 5 and 9 Newton's per Rib” (TBA Belting).

 

In practical terms this relates to about 5mm of deflection, under moderate finger pressure, on the non tensioner side. 

If fitting new belts it is advisable to observe the drive for the first 20-30 minutes. It may be necessary to make an 
adjustment to compensate for the normal drop in tension during he run 

–in period.  

SP20038_REV0

OCTOBER 2017

Summary of Contents for G26D

Page 1: ...G26D G30D G34D DEDICATED MOWER INSTRUCTION MANUAL SP20038_REV0 OCTOBER 2017...

Page 2: ...ix ray and ools NOTE THIS INFORMATION IS INTENDED FOR GUIDANCE PURPOSES ONLY WE RECOMMEND THAT YOU DICUSS YOUR SPECIFIC REQUIREMENTS WITH OUR HEAD OFFICE SALES MANAGERS OR YOUR LOCAL DENNIS DEALER 1 S...

Page 3: ...is always at your call In the interests of speed and accuracy of information please quote the serial numbers of the machine and engine when making enquiries For the machine this is to be found on a pl...

Page 4: ...Weight Kg 142 150 160 Cutting Width mm 660 760 860 Cylinder Number of Blades 8 8 8 11 Height of Cut mm 9 56 9 56 9 56 Cut Performance Clips M 8 Blade Cut Performance Clips M 11 Blade 137 137 137 189 E...

Page 5: ...engine The rear roller and cutter are controlled independently via belt clutches operated from the console on the upper handle bar ITEM 5 A parking brake is fitted for added safety when working on slo...

Page 6: ...ay from the area of spill and avoid creating and sources of ignition until the vapours have dissipated Replace damaged or faulty silencers Before using the machine always inspect the safety devices in...

Page 7: ...ontrols the parking brake It is only to be engaged when the machine is stationary it is NOT to stop the machine Push lever forwards to engage and pull back to disengage NOTE THE PARKING BRAKE NEEDS TO...

Page 8: ...cturer operating manual for full details 1 Switch on the fuel tap 2 Switch the handlebar off switch to ON or depress deadmans handle 3 Set the throttle control to a half open position 4 Shift the chok...

Page 9: ...ull the Cylinder Control Lever Item 16 backwards Release the Deadmans Handle item 15 NOTE Releasing the Deadmans Control Lever with the cutter engaged will cause the engine to stop FITTING THE GRASSBO...

Page 10: ...LOW A SETTING WHEN THE GROUND CONDITIONS ARE DRY AS THIS MAY CAUSE THE CLUTCH TO SLIP To check the height of cut and that the machine is level the setting bar can be used 229524 Place the bar between...

Page 11: ...cuts across the whole length When set tighten the lock nut Item 1 Recheck adjustment DO NOT set the cylinder hard to the bottom blade This will cause excessive wear of both components and increase fu...

Page 12: ...eads to belt slip causing rapid wear over tensioning means excessive strain on the belt and bearings Between these two extreme conditions is a reasonable range of tension within which the belt will op...

Page 13: ...ive strain on the belt and bearings CABLE ADJUSMENT Over time the cables that operate the clutch pulleys and the brake will need adjusting This adjustment can be carried out at either end of the cable...

Page 14: ...side plate of the machine This is to lubricate the internal spur gear that provides drive to the rear roller Apply one pump of grease Do not over grease CONTROL LEVERS AND CABLES 2 months Apply a smal...

Page 15: ...G34D DEDICATED PARTS BOOK P0 SP20038_REV0 OCTOBER 2017...

Page 16: ...G34D 229252 ENGINE BED 34 1 13 G30D 229251 ENGINE BED 30 1 13 G26D 229250 ENGINE BED 26 1 14 G34D 229255 TIE BAR 34 1 14 G30D 229254 TIE BAR 24 30 1 14 G26D 229253 TIE BAR 26 27 1 15 G34D 229267 34 C...

Page 17: ...3 229514_REV1 BELT GUIDE 680 1 24 230004_REV0 SUPPORT BRACKET 1 25 230331_REV0 TIE BAR JIG G SERIES 1 26 604761_REV1 THACKERY WASHER 2 27 J20023_REV2 UNIT LIMITING STUD 2 28 SP01008_REV0 HEX SET SCREW...

Page 18: ...5 G34D 229248 LAYSHAFT CUTTER DRIVE 34 1 25 G30D 229247 LAYSHAFT CUTTER DRIVE 30 1 25 G26D 229245 LAYSHAFT CUTTER DRIVE 26 1 26 G34D 229249 LAYSHAFT ROLLER DRIVE 34 1 26 G30D 229246 LAYSHAFT ROLLER DR...

Page 19: ...RIVE 34 1 26 229249_REV1 LAYSHAFT ROLLER DRIVE 34 1 27 229252_REV3 ENGINE BED 34 1 28 229258_REV1 LAYSHAFT GUARD 34 2 29 229322_REV1 4 GROOVE DRIVE PULLEY 1 30 229382_REV1 BRG HOUSING 2 31 229383_REV2...

Page 20: ...R 2 7 J20369_REV0 E CLIP 5MM 1 8 J20376_REV1 THROTTLE CLAMP 1 9 J20467_REV0 GRUB SCREW M8 X 8 1 10 J209025_REV0 KEY 3 16 X 3 16 X 1 3 4 RD END 1 11 SP01027_REV0 HEX SET SCREW M8 X 40 4 12 SP01079_REV1...

Page 21: ...V1 LANDROLL COLLAR 1 4 229104_REV1 LANDROLL BEARING HOUSING 1 5 800066_REV0 DRIVE BEARING HOUSING ASSY 1 6 800071_REV1 REAR ROLLER ASSEMBLY 1 7 J20009_REV1 BLANKING PLATE 1 8 SP01045_REV0 HEX SET SCRE...

Page 22: ...10 11 14 20 17 13 4 15 20 17 4 3 12 13 5 2 5 19 6 17 16 18 18 21 24 7 2 7 8 22 23 9 1 CENTER ROLLER INTERNAL DETAIL P4 02 REAR ROLLER CONTINUED 800071 SP20038_REV0 OCTOBER 2017...

Page 23: ...BUSH 12DU16 3 19 605857_REV1 SEAL REAR ROLLER 2 20 J20467_REV0 GRUB SCREW M8 X 8 2 21 SP01009_REV0 HEX SET SCREW M8 X 20 12 22 SP01036_REV0 HEX SET SCREW M8 X 35 8 23 SP03004_REV0 WASHER M8 TOOTHED 8...

Page 24: ...EARING 6205 2RS 3 1 2 228053_REV1 PIN SPIROL M5 X 45 1 3 229003_REV1 DRIVE PULLEY LAND ROLL 1 4 229011_REV1 PINION SHAFT 11T 1 5 229034_REV2 ROLLER BEARING HOUSING 1 6 J20052_REV0 BEARING 6204 2RS 3 2...

Page 25: ...2014_REV0 NUT M12 LOCK THIN 2 9 SP02054_REV0 NUT M12 BINK 2 10 SP03006_REV0 WASHER M12 TOOTHED 2 11 SP03017_REV0 WASHER M12 FORM C 4 MODEL DIFFERENCES ITEM No MODEL PART NUMBER DESCRIPTION QTY 1 G34D...

Page 26: ...G SERIES UPPER HANDLEBAR ASSY 1 9 SP01035_REV0 HEX SET SCREW M10 X 25 4 10 SP01047_REV0 HEX SET SCREW M10 X 60 2 11 SP02005_REV0 NUT M8 STD 4 12 SP02008_REV0 NUT M10 NYLOC T 6 13 SP03004_REV0 WASHER...

Page 27: ...22 4 13 43 22 2 5 21 20 1 7 14 15 2 2 2 18 14 42 13 42 13 44 32 32 4 16 27 36 33 27 33 36 24 39 40 34 29 31 38 5 23 31 38 6 42 13 25 30 30 41 41 37 37 37 35 26 46 45 46 19 17 28 28 28 HANDLE BARS P6 0...

Page 28: ...V0 SHOULDER BOLT 12 X 25 M10 1 25 SP01043_REV0 CAP HEAD M5 X 16 1 26 SP01070_REV0 CAP HEAD M2 X 12 2 27 SP01076_REV0 HEX SET SCREW M8 X 16 3 28 SP01081_REV0 CAP HEAD M5 X 12 3 29 SP01101_REV0 SCREW M6...

Page 29: ...10 1 6 SP01076_REV0 HEX SET SCREW M8 X 16 1 7 SP02006_REV0 NUT M8 NYLOC T 1 8 SP02008_REV0 NUT M10 NYLOC T 1 9 SP03008_REV0 WASHER M8 FORM A 1 10 SP03012_REV0 WASHER M12 FORM A 1 11 SP03019_REV0 WASHE...

Page 30: ..._REV1 DECAL WARNING 1 5 229376_REV0 CUT DECAL 2 6 229579_REV0 READY FOR DISPATCH DECAL 1 7 229580_REV0 DECAL INSPECTION 1 8 229605_REV0 98 Db DECAL 1 9 B32902_REV1 DECAL DENNIS 1 10 B32903_REV0 DECAL...

Page 31: ...RIPTION QTY 1 229243_REV1 GRASS BOX 860 1 MODEL DIFFERENCES ITEM No MODEL PART NUMBER DESCRIPTION QTY 1 G26D 229241 GRASSBOX 26 1 1 G30D 229242 GRASSBOX 30 1 1 G34D 229243 GRASSBOX 34 1 GRASSBOX P9 01...

Page 32: ...26D 229652 SHEAR BLADE 26 1 14 G34D 230555 CYLINDER 8 BLADE 34 1 14 G30D 230566 CYLINDER 8 BLADE 30 1 14 G26D 230597 CYLINDER 8 BLADE 26 1 15 G34D 230610 CYLINDER 11 BLADE 34 1 15 G34D 230558 34 SHEAR...

Page 33: ...INDER 8 BLADE 34 190 1 15 230558_REV0 34 SHEAR BLADE CARRIER 190 1 16 230562_REV0 34 DEFLECTOR 190 1 17 604760_REV1 THACKERY WASHER 1 18 D1947_REV1 GREASE NIPPLE M6 2 19 E1 1061_REV0 WASHER M6 SPRING...

Page 34: ...4NJ England Tel 44 0 1332 824 777 Fax 44 0 1332 824 525 Email sales dennisuk com Email spares dennisuk com www dennisuk com A division of Howardson Ltd a proudly British company Company reg No 641526...

Page 35: ...NOTES SP20038_REV0 OCTOBER 2017...

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