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13 

CUTTING HEIGHT ADJUSTMENT 

 

Avoid  personal  injury!  Ensure  the  engine  is  switched  off  and  the  key 
removed.  WAIT  UNTIL  BLADES  HAVE  STOPPED  TURNING  before 
dismounting to make adjustments. 
 
 
 

IMPORTANT:

 Avoid very low cutting heights – striking the ground with blades causes the 

most damaging shock waves a Mower can encounter and will cause damage to the Mower 
and drive. 
 
To  achieve  maximum  cutting  efficiency,  and  provide  the  most  uniform  cut,  the  Mower 
should be operated with the rear of the Mower slightly higher, ½” – 1” 

(12.5 – 25 mm),

 than 

the front. 
 

CUTTING HEIGHT ADJUSTMENT – LIFT TYPE

 

 

  Place Tractor and Mower on a level surface. 

 

  Raise  the  Mower  to  approximate  desired  cutting  height  with  the  Tractor  hydraulic  lift 

control lever. 

 

  Loosen or remove locating pins on gauge wheel frame tubes. Insert top pin at desired 

cutting height, insert bottom pin in hole, which clears tube, and insert R-Clip to retain. 

 

  Lower  the  Mower  slowly  until the  rear of  the  Mower  is  ½”  –  1” 

(12.5  –  25mm)

  higher 

than  the  front.  Position  the  adjustable  stop  on  the  tractor  lift  quadrant  against  the  lift 
control lever so the Mower can be returned to the same height. 

 

  Adjust the length of the top link so that when lifting the Mower the front of the Mower 

will  raise  2”  -  2½” 

(50-62.5mm)

  before  the  gauge  wheels  leave  the  ground. 

(This  will 

permit the flexible hitch to pivot and allow the Mower to follow the contours on uneven 
ground).

 

 

  Level the Mower side to side with the tractor lower link adjustment. 

 

IMPORTANT:

  When  raising  the  Mower  to  transport  height  ensure  there  is  clearance 

between  the  Mower  and  the  driveline  –  DAMAGE  WILL  RESULT  IF  THE  DRIVELINE 
HITS THE DECK OF THE MOWER. 
 

STARTING AND STOPPING MOWER

 

 

Power for operating the Mower is supplied from tractor PTO. Refer to your Tractor Manual 
for instructions regarding engaging and disengaging of the PTO.  

 

ALWAYS engage the PTO at low engine rpm. 

 

ALWAYS operate at the recommended PTO speed. 

 

LEARN how to stop the Tractor and Mower quickly and safely in case of emergency. 

 

IMPORTANT:

  Stop  the  Mower  and  Tractor  immediately  upon  striking  an  obstruction. 

Inspect  the  Mower  for  damage  and  repair  before  resuming  operation.  DO  NOT 
DISENGAGE  PTO  WHEN  ENGINE  IS  AT  FULL  PTO  RPM  –  always  idle  engine  before 
disengaging the PTO. 
 

Summary of Contents for MAXICUT 280

Page 1: ...MAXICUT 280 Rotary Topper Operator Manual Publication 986 September 2020...

Page 2: ...to verify that your machine has been registered with McConnel Limited IMPORTANT During the initial bedding in period of a new machine it is the customer s responsibility to regularly inspect all nuts...

Page 3: ......

Page 4: ...mple may require particular care when packing to avoid damage in transit 1 04 This warranty does not extend to any product from which McConnel Ltd s serial number plate has been removed or altered 1 0...

Page 5: ...d be undertaken within two days of the failure Claims submitted for repairs undertaken more than 2 weeks after a failure has occurred or 2 days after the parts were supplied will be rejected unless th...

Page 6: ...e deemed to be a waiver of any other term 4 02 If any provision of this limited warranty shall violate any applicable law and is held to be unenforceable then the invalidity of such provision shall no...

Page 7: ...ances to avoid the entrapment with human body parts BS EN ISO 14120 2015 Safety of machinery Guards general requirements for the design and construction of fixed and movable guards BS EN 4413 2010 Hyd...

Page 8: ...amaged blades before operating the mower Ensure the blade retaining bolts and fasteners are secure and tight Lubricate the driveline universal joints and telescoping members daily Inspect the wheel lu...

Page 9: ......

Page 10: ...t grass and debris Chain Guards Deflectors are in place in good condition Driveline Gearbox shields guards are in good condition Driveline clutches are in good condition not frozen Driveline telescopi...

Page 11: ...e tyres are in good condition with correct pressure The wheel nuts are tight The tractor brakes are in good condition The steering linkage is in good condition There are no visible oil leaks The hydra...

Page 12: ...t grass and debris Chain Guards Deflectors are in place in good condition Driveline Gearbox shields guards are in good condition Driveline clutches are in good condition not frozen Driveline telescopi...

Page 13: ...e tyres are in good condition with correct pressure The wheel nuts are tight The tractor brakes are in good condition The steering linkage is in good condition There are no visible oil leaks The hydra...

Page 14: ......

Page 15: ...hing and Storing Mower 15 Driveline Length Check Procedure 15 TROUBLESHOOTING SECTION General Troubleshooting 17 PTO Shaft Troubleshooting 18 Gearbox Troubleshooting 18 MAINTENANCE SECTION Lubrication...

Page 16: ...9 Tailwheel Beam 40 Tailwheel Assemblies 41 PTO Shaft Assembly 45 Slip Clutch Assembly 47 Gearbox T Box Assembly 48 Outer Gearbox Assembly 49 Coupler Shaft 53 Gearbox Mounting 55 Blade Assembly 56 Gua...

Page 17: ......

Page 18: ...been removed NOTE Where grass and weeds are high enough to obscure debris that could be struck by the blades the area should be inspected and debris removed mowed at an intermediate height and re insp...

Page 19: ...blades Such a situation is extremely hazardous Inspect the cutting area for any such objects and remove prior to mowing Never allow the cutting blades to contact such items Be particularly careful in...

Page 20: ...ponent unless the mower has been securely supported and blocked using suitable substantial items to prevent sudden or inadvertent falling which could cause serious injury or even death Never operate t...

Page 21: ...permanent total hearing loss Where the tractor is fitted with a quiet cab it is recommended that the windows are kept closed at all times whilst operating this machine In addition to the safety messa...

Page 22: ...CTION BLADE TIMING 5 D137 1 INSTRUCTION CCW BLADE ROTATION 6 D138 1 INSTRUCTION CW BLADE ROTATION 7 09 821 29 1 WARNING EURODECAL 8 09 821 34 1 WARNING EURODECAL 9 09 811 04 1 WARNING MAX PTO SPEED 54...

Page 23: ...Part Number 09 821 29 2 Part Number 7560093 3 Part Number 7560155 4 Part Number D132 6 Part Number D138 5 Part Number D137 8 Part Number 09 821 34 9 Part Number 09 811 04 11 Part Number 09 810 03 10 P...

Page 24: ...ntime The Operation and Maintenance Sections of the manual train the owner operator how to work the Mower correctly and attend to appropriate maintenance tasks The Trouble Shooting Guide helps diagnos...

Page 25: ...Agricultural purposes to reduce the risk of property damage serious bodily injury or even death from objects thrown out by or contact with the Cutting Blades The 9 Lift Type machine requires a minimum...

Page 26: ...parts lists and exploded view drawings for more details This Mower is shipped partially assembled Assembly will be easier if components are aligned and loosely assembled before tightening hardware Alw...

Page 27: ...splines and assemble DO NOT ASSEMBLE A DRIVELINE WITHOUT A SHIELD Attach the slip clutch end of the driveline to the gearbox input shaft 1 securely Ensure the Slip Clutch is fully located onto the inp...

Page 28: ...mph 3 to 8 km h Always operate the tractor at the recommended PTO speed IMPORTANT To avoid damage to cutter re torque all bolts after the first 10 hours of operation Re torque blade carrier retaining...

Page 29: ...low the contour of the terrain Drawbar Shorten or remove the tractor Drawbar so it will not interfere with the up and down movement of the Mower Do not get or allow others between the Tractor and the...

Page 30: ...on the tractor lift quadrant against the lift control lever so the Mower can be returned to the same height Adjust the length of the top link so that when lifting the Mower the front of the Mower will...

Page 31: ...ut Under certain conditions tractor tyres may roll some grasses down and prevent them from being cut at the same height as the surrounding area When this occurs reduce the tractor ground speed but mai...

Page 32: ...e DRIVELINE LENGTH CHECK PROCEDURE A loose shaft could slip off and result in personal injury or damage to the Mower When attaching PTO yoke to tractor PTO shaft it is important that the spring activa...

Page 33: ...maintain 1 40mm clearance when operating in the shortest working position Shorten inner and outer guard tubes equally Shorten inner and outer sliding profiles by the same amount that the shield tubes...

Page 34: ...G TOO HIGH Blades bent up Blade Carrier bent Blades on upside down Replace Blades Straighten or replace Blade Carrier Turn Blades right side up and tighten MOWER VIBRATES Blade locked back Drivelines...

Page 35: ...intenance TUBE BROKEN IN WELDED SEAM Over loaded Replace part Check Slip Clutch is not frozen or seized See Clutch Maintenance YOKE BROKEN AT EAR TIP Over loaded Replace part Check Slip Clutch is not...

Page 36: ...al No Oil Seal Oil too light Bent Shaft Oil Seal race rough Oil Seal installed incorrectly Oil Seal not sealing in housing Bearings loose Vent Plug stopped up Oil level too high Gasket damaged Bolts l...

Page 37: ...details of the frequency at which these points should be lubricated under normal working conditions severe or unusual conditions may require more frequent lubrication Use SAE multi purpose lithium ty...

Page 38: ...ue if required Recommended lubricants for the Gearbox are Exxon Spartan EP220 Mobil HD 80W90 or equivalent Required lubricant is a SAE 90 or SAE 80W90 with EP additives for extreme pressure and temper...

Page 39: ...ir turn the three Nylon Bolts through a turn in the Shield Slots of the Cone and Tube and remove them Slip the Shield Cone Assembly off the inner section of the Driveline and install the new or repair...

Page 40: ...ation which can damage gearbox bearings Vibration may also cause structural cracks in the Mower housing Use only Original Equipment Blades on this Mower They are made of special heat treated alloy ste...

Page 41: ...the nut until the blade carrier is loosened Use a suitable 2 jaw gear puller to pull the carrier off the tapered gearbox shaft If gear puller is not available a long bar can be utilized by inserting...

Page 42: ...d DO NOT RE USE TO CLEAN AND INSPECT Inspect all components for rust wear or damage Check Spacer 8 for scoring or excessive wear Clean Clutch Plates and Drive Plates with a wire brush as required to r...

Page 43: ...are in good repair and rotate freely on the Drivelines Replace Bearings and or Integral Shields if necessary Re install Gearbox Canopy Shields with their fixings and tighten securely Spring Clutch Co...

Page 44: ...ly turn each then turn each again Mark Plates and Disks as described in the previous section on Frozen Clutches With PTO engaged and the tractor running at HALF THROTTLE let clutch out rapidly to pop...

Page 45: ...0 3350 4550 0 TORQUE VALUES FOR METRIC BOLTS Bolt Dia ft lb Nm ft lb Nm ft lb Nm ft lb Nm 6mm 4 5 6 1 8 5 11 5 12 16 3 14 5 20 0 8mm 11 14 9 20 27 1 30 40 1 35 47 5 10mm 21 28 5 40 54 2 60 81 4 70 95...

Page 46: ...ted to prevent injury to hands and feet due to inadvertent dropping or falling over Always wear Safety Glasses and Gloves to prevent eye and hand injury when chiseling or hammering on metal components...

Page 47: ...e gearbox on appropriate work surface Remove the eight bolts that retain the input housing hub Remove hub assembly from main housing Note quantity and thickness of shims between hub and main housing R...

Page 48: ...n before starting to reduce the possibility of dirt or grit getting into components during assembly STEP I Install spacer 4 gear 3 and bearing cones 8 onto the shaft If any shims were present between...

Page 49: ...s GEARBOX DISASSEMBLY Remove eight bolts 18 from input shaft bearing housing 15 Tap around circumference of bearing housing 15 to loosen housing and shims Remove housing it may be necessary to pry the...

Page 50: ...nd on a solid surface to remove lower bearing 5 Repeat procedure for opposite end of shaft Replace worn parts and assemble in reverse order LOWER BEARING RETAINER CAP Remove old seal 2 from cap 1 and...

Page 51: ...ound the threaded end of the output shaft and attach an 8 lb 3 6kg weight to the string If the weight will rotate the shaft then preload must be increased by removing a shim 3 and then rechecking Chec...

Page 52: ...semble adjusting nut and tighten to ensure that all parts are seated Then loosen the adjusting nut until a rolling torque of 10 to 12 inch pounds 1 1 to 1 36 Nm is reached Insert cotter pin through sh...

Page 53: ...36 FOR NOTES...

Page 54: ...McConnel Limited Temeside Works Ludlow Shropshire SY8 1JL England Telephone 01584 873131 Facsimile 01584 876463 www mcconnel com...

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