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Iseki SCMA48F Introduction Manual Download Page 46

SFH220 & SFH240 FRONT MOWER SERVICE MANUAL

46

・

Foreign matter caught in shaft

・

Broken wheel

・

Short of grease 

・ 

Inside of the mower deck is clogged with 

    too much grass or mud.

・

Defective hydraulic system

Troubles Presumable 

causes  Remedies

・ 

Excessive noise and  vibration

・

Too low engine output

・

Gauge wheels do not turn.

・

Mower does not rise.

・ 

Clogged grass inside of mower or foreign 

    matter caught in a pulley

・ 

Deformed or interfering belt cover or shaft 

    cover

・

Damaged bevel gears

・

Broken or unbalanced blades

・

Loose blade tightening nuts

・ 

Slipping blade belt (SMM54F)

・

Too low engine speed

・

Too fast travelling speed

・ 

Foreign matter caught between blade and 

    blade support

・

Foreign matter caught in a pulley

・

Defective engine

・

Clean.

・

Repair it.

・

Consult your dealer.

・

Replace them with new ones.

・

Re-tighten them to 1300 kgf

・

cm. 

・

Adjust belt tension spring 

    properly.

・

Mow at full throttle (

r

).

・

Slow down.

・

Clean.

・

Clean.

・

Consult your dealer.

・

Clean.

・

Replace it with a new one.

・

Inject grease.

・

Clean.

・

Consult your dealer. 

・

Loose blade tightening nuts

・ 

Foreign matter caught in blades or blade 

    supports

・

Broken bevel gears

・

Broken blade pulley

・

Slipping blade belt

・ 

Center PTO clutch is slipping or not 

    engaging. 

・

Blades do not rotate.

・

Re-tighten them to 1300 kgf

・

cm. 

・

Clean.

・

Consult your dealer.

・

Replace it with a new one.

・ 

Adjust belt tension spring properly.

・

Consult your dealer.

Summary of Contents for SCMA48F

Page 1: ...CHAPTER 1 ISEKI MOWER DECKS SCMA48F SCMA54F SMM54F ISEKI MOWER DECKS SCMA48F SCMA54F SMM54F CHAPTER 1 CHAPTER 2 CHAPTER 3 CHAPTER 4 CHAPTER 5 CHAPTER 6 CHAPTER 7 CHAPTER 8 CHAPTER 9 CHAPTER 10 CHAPTER 11 CHAPTER 12 ...

Page 2: ......

Page 3: ... machine in other places is not authorized Besides the manufacturer does not pay for any damage caused by unauthorized use the risk being borne by the user Proper use of the machine also implies that the user follows the operational adjusting and servicing instructions indicated in this manual When you have any question about your purchased machine you are always welcome to ask your dealers The pa...

Page 4: ...ETACHING THE MOWER DECK 17 CHAPTER 5 MOWER OPERATION 19 1 BEFORE OPERATION 19 2 CUTTING HEIGHT ADJUSTMENT 19 3 STARTING MOWING OPERATION 20 4 CLEANING A MOWER DECK CLOGGED WITH GRASS 21 5 CLEANING A CHUTE CLOGGED WITH GRASS 22 6 EMERGENCY STOP 22 7 STOPPING MOWING OPERATION 22 8 EFFICIENT MOWING 23 CHAPTER 6 SCMA54F 48F INSPECTION AND MAINTENANCE OF MAJOR PARTS 25 1 INSPECTION AND REPLACEMENT OF B...

Page 5: ...OF V BELTS 36 3 INSPECTION REPLACEMENT OF BLADES 37 4 INSPECTION OF GAUGE WHEELS 39 5 INSPECTION OF ROLLERS 39 6 CLEANING OF MOWER DECK 39 7 PERIODICAL INSPECTION TABLE 41 CHAPTER 10 STORING THE MOWER 43 CHAPTER 11 SMM54 TROUBLESHOOTING 45 CHAPTER 12 DISASSEMBLY AND REASSEMBLY OF GEAR BOX 47 1 CONSTRUCTION 47 2 DISASSEMBLY AND REASSEMBLY 48 3 BACKLASH ADJUSTMENT 51 4 SIDE AND CENTER METAL 52 ...

Page 6: ...SFH220 SFH240 FRONT MOWER SERVICE MANUAL 6 ...

Page 7: ...her blades to rotate Do not touch rotating blades Never step on the mower deck When you are working with co workers be sure to alert them by signalling before you make a new move While mowing always wear substantial shoes and long trousers Do not operate the machine barefoot or while wearing open sandals When operating adjusting or servicing the machine avoid wearing long loose clothes accessories...

Page 8: ... serious injury so keep hands and body away from pin holes and nozzles ejecting such fluids Be sure to consult your dealer about any hydraulic and fuel injection system trouble If any hydraulic fluid is injected accidentally into the skin it must be removed within a few hours by a doc tor familiar with this type of injury Keep all nuts bolts and screws tight to be sure that the equipment is in saf...

Page 9: ...CHAPTER 1 FOR SAFE OPERATION 9 1 SCMA48 54 SMM54 2 5 2 1 3 4 1 1 1 2 4 5 3 ...

Page 10: ...s from your dealer A new label should be placed in the same place where the old one was located When sticking on a new label clean the place to enable the label to stick and squeeze out all air bubbles trapped under it When replacing a part with a caution label stuck on a new caution label should also be ordered and in stalled 1 Danger label Code No 2500 901 014 3 WARNING RISK OF INJURY Stay clear...

Page 11: ...nd belt Belts SB101 W800 Blade rotating speeds Gear box input speed Engine speed 1983rpm 1797rpm 2894rpm 1986rpm 1757rpm 2600rpm Dimensions Overall length 929mm 1004mm 934mm Overall width 1287mm 1441mm 1449mm Overall height 448mm Weight with linkage 90kg 100kg 115kg Cutting height adjustment Adjustable in 6 stages by pin shifting and no step by cutting height dial Cutting height 30 120mm 95mm Disc...

Page 12: ...SFH220 SFH240 FRONT MOWER SERVICE MANUAL 12 ...

Page 13: ...PONENTS 13 3 CHAPTER 3 NAMES OF MAJOR COMPONENTS SCMA54F 48F SCMA54F 48F 1 Mower deck 2 Drive shaft 3 Bevel gear case LH 4 Bevel gear case RH 5 Drive shaft cover 6 Gauge wheel 7 Roller 8 Blade LH 9 Blade RH 1 7 7 5 2 5 4 6 6 3 8 9 ...

Page 14: ...H240 FRONT MOWER SERVICE MANUAL 14 SMM54F SMM54F 1 Mower deck 2 Drive shaft 3 Gear case 4 Drive shaft cover 5 Gauge wheel 6 Roller 7 Blade pulley middle 8 Blade pulley LH 9 Blade pulley RH 5 5 1 3 6 2 6 4 8 7 9 ...

Page 15: ...Shlft the PTO Iever to the STOP N posi tion Do not start the engine except for operat ing the lift lever 1 ATTACHING THE MOWER DECK Attach the mower deck first to the front mower and then connect the drive shaft INSTALLATION OF MOWER DECK SCMA54F 48F SMM54 a Place the mower deck in the front of the front mow er and hold the lift lever in the DOWN d position b only for SCMA mower deck Bring the fro...

Page 16: ...GE 2 1 ADJUSTMENT OF MAXIMUM LIFTING HEIGHT Be sure to adjust the lifting height of each side as fol lows Max height A SCMA54F A 520mm SMM54F A 520mm SCMA48F CAUTION Incorrect adjustment may lead hitting be tween the step and gear box of mower deck or shortening of the minimum ground clear ance 2 2 ADJUSTMENT OF UP STOP HEIGHT a Shut off the engine b Turn the PTO Iever to the ON position to lift u...

Page 17: ...connect the universal joint on the PTO shaft of the front mower IMPORTANT Be sure to keep the removed parts 3 ATTACHING THE DRIVE SHAFT SCMA54 48F Hold the ring of the universal joint pressed in one side and push the joint onto the PTO shaft while aligning the splines 1 Mower deck 3 Ring 2 Drive shaft IMPORTANT After inserting the universal joint of the drive shaft onto the side PTO shaft of the f...

Page 18: ...SFH220 SFH240 FRONT MOWER SERVICE MANUAL 18 ...

Page 19: ...ION Before operating the lift lever be seated in the operator s seat and make sure of the safety conditions when lowering the mower deck CHAPTER 5 MOWER OPERATION 1 BEFORE OPERATION CAUTION Become familiar with how to operate the front mower and understand safety in structions by reading this manual care fully Make sure that all safety covers and guards are installed in position Make sure that the...

Page 20: ...ope angles ground softness wa ter pools etc to avoid turning over falling down and side shifting Also make sure there is no danger of hurt ing children animals by standers etc and damaging nearby trees buildings etc ogawa a Start the engine and turn the throttle lever to the intermediate position between the low speed t and high speed r positions b Move the lift lever to the up position u to raise...

Page 21: ...operties like buildings cars etc within a range where ejected grass or stones may reach The mower blades should be turned on only on turf or grassland with the mower deck lowered h Turn the throttle lever to the high speed r position to raise engine speed i As the HST forward travel pedal is depressed grad ually the front mower starts to travel CAUTION Be sure to start moving at suf ficiently low ...

Page 22: ...k or clogs the mower chuter stop operation immediately and remove clogged grass When the discharge chuter is clogged a Shift the PTO Iever to the OFF N position and move the lift lever backward to raise the mower deck in the highest position b Stop the engine c Loosen the lower fixing place of the lift rod and lift up the mower deck to the Flip Up position d Fix the mower deck and lift arm with lo...

Page 23: ...g height is often lower than expected during operation because the front mower sinks c Select a sufficiently slow travelling speed and avoid sudden starts turns and stops If not the turf may be damaged IMPORTANT Never attempt to stop the engine abruptly when it is running at high speeds Be sure to let the engine idle for about 5 minutes af ter long operation and then stop the engine Abrupt engine ...

Page 24: ... does not hit the operator by taking the direction of the wind into con sideration b When the air intake screens are clogged clean them at once IMPORTANT When operating the front mower in dusty circumstanc es keep on paying attention to the coolant tempera ture warning lamp Never continue operating when screens are clogged or an engine breakdown may result ...

Page 25: ...plugs with sealing tape and pour new oil using an oil pitcher c Make sure that the oil leaks through the level plug Then screw both plugs in CHAPTER 6 SCMA54F 48F INSPECTION AND MAINTENANCE OF MAJOR PARTS SCMA48 54 CAUTION When servicing the lawn mower place it on level hard ground Stop the engine and remove the starter key Apply the parking brake securely Push down d the lift lever to lower the m...

Page 26: ...dangerous So replace such blades with new ones at once c The blade nuts should be tightened to the specified torque with the blades chocked respectively Tightening torque 1000kg cm 72 ft lb 2 INSPECTION REPLACEMENT OF BLADES Inspection of blades and phase position LH RH 1 Blade LH 2 Blade RH a Confirm that blade LH 1 and blade RH 2 are at right angles to each other b When these blades are not at r...

Page 27: ...tion of engine low DANGER Be sure to use new bolts when changing blades IMPORTANT Make sure that the blades are not in contact with the mower deck by turning them by hand d There are two kinds of blades for respective mower decks Be sure to install the blades in the proper positions SCMA48F 8667 306 001 0 8667 306 002 0 I8667A I8667B SCMA54F 8668 306 001 0 8668 306 002 0 I8668A I8668B e Connect th...

Page 28: ...iodically The gear case should also be serviced periodically for oil replenishment and replacement 3 3 2 1 5 5 4 Ref No 1 2 3 4 5 Filling points Bevel gear case LH Bevel gear case RH Gauge wheel Drive shaft Roller Lubricants Gear oil SAE 80 Gear oil SAE 80 Quantity litres Imp gal 0 3 0 07 0 3 0 07 Grease Inject until grease overflows As required ...

Page 29: ...nt criteria Inspection and servicing intervals hours of operation Pre operation 50 100 150 200 250 Blade Bevel gear case LH and RH Roller and gauge wheels Greasing points Bolls and nuts Pins and crips Replace oil after initial 50 h and then after every 200 h Grease up after every 50 h Deformed broken worn and cracked ones should be replaced Maintain the specified level They should turn smoothly Th...

Page 30: ...SFH220 SFH240 FRONT MOWER SERVICE MANUAL 30 ...

Page 31: ... e Remove all rust and touch up where paint has peeled off with touch up paint supplied by ISEKI f Be sure to replace all the removed parts g Lost pins and clips should be replaced with new ones h Check each part for damage and repair or replace damaged ones with new ones for the next operation IMPORTANT Insist on ISEKl genuine parts when replacing i Grease up all grease points j All loose bolts a...

Page 32: ...SFH220 SFH240 FRONT MOWER SERVICE MANUAL 32 ...

Page 33: ... same level and correct angle Deformed blades Too low cutting height Mower is not parallel to ground Too fast turning speed Too bumpy ground Broken or unbalanced blades Loose blade tightening nuts Tension of timing belt is poor Check belt and correct Re install them correctly Wait until grass becomes dry Mow it in two steps Slow down sufficiently Run engine at full throttle r Clean Mow it in two s...

Page 34: ...SFH220 SFH240 FRONT MOWER SERVICE MANUAL 34 ...

Page 35: ...d on the left side wall of the gear case Check to see if a small amount of oil overflows through the plug hole If so the level is normal If not replenish with gear oil SAE80 through the plug hole us ing an oil pitcher or the like Oil Gear oil SAE80 Capacirty 0 4 liter 0 09 lmp gal 1 Gear case 3 Drain plug 2 Level plug IMPORTANT Before replacing the level plug be sure to wrap the threads with seali...

Page 36: ...rain plug Then drain all the oil by tilting the gear case f Wrap the threads of the drain plug with sealing tape and screw it in and supply with fresh oil through the level plug hole using an oil pitcher Gear oil SAE80 capacity 0 4 liter 0 09 IMP gal g Wrap the threads of the level plug with sealing tape and re install it IMPORTANT All the oil spilled on the gear case mount should be wiped off com...

Page 37: ...f blades a Apply the parking brakes CAUTION Be sure to apply the parking brake securely b Start the engine and turn the throttle lever to the low speed t position to decelerate the engine c Shift the lift lever to the UP u position and raise the mower deck to the highest position d Stop the engine Inspection of belt a Remove the drive shaft cover and both the belt cov ers installed on the mower de...

Page 38: ...n the wood is removed As the blades are tightened along with washers and shims take care not to lose them when the blades are disassembled 1 Spanner 3 Blade 2 Nut 4 Wood e Set the cutting height at the lowest position f Lower the mower deck onto the ground g Remove the rear linkage of mower deck by pulling out the pin h Start the engine and lift up the mower deck to the highest position i Stop the...

Page 39: ...ove each belt cover and drive shaft cover and clear the grass and dust accumulated under the cover before operation Otherwise a shorter service life of the belts and damage to bearings and oil seals will be caused b Install a new blade insert the washer and tighten blade nuts temporarily to determine the height differ ence between blades If it is more than 2 mm 0 08 inch correct it with adjusting ...

Page 40: ...points Bevel gear case Center metal Side metal Tension arm Gauge wheel fork Gauge wheel Roller Drive shaft Lubricants Gear oil SAE 80 Quantity litres Imp gal 0 4 0 09 Grease Inject until grease overflows As required Inject until grease overflows 5 3 3 7 7 4 7 7 6 1 7 2 5 6 8 8 ...

Page 41: ... special tools are required consult your dealer Check points Intervals after that Judgement criteria Inspection and servicing intervals hours of operation Pre operation 50 100 150 200 250 Blade Gear case oil Belt tension Inflation of gauge wheel Replace after initial 50 h and then after every 200 h Deformed broken worn and cracked ones should be replaced Maintain the specified level Inter coil cle...

Page 42: ...SFH220 SFH240 FRONT MOWER SERVICE MANUAL 42 ...

Page 43: ...s normal Ioosen the tension spring SMM54 f Remove all rust and touch up where paint has peeled off with touch up paint supplied by ISEKI g Be sure to replace all the removed parts h Lost pins and clips should be replaced with new ones i Check each part for damage and repair or replace damaged ones with new ones for the next operation IMPORTANT Insist on ISEKI genuine parts when replacing j Grease ...

Page 44: ...SFH220 SFH240 FRONT MOWER SERVICE MANUAL 44 ...

Page 45: ...ne speed Clogged discharge or mower deck inside Too dense grass Drive belt is slipping or broken Broken tension spring Too fast travelling speed Too low engine speed Worn or broken blades Blades are installed upside down Check belt and correct Re install them correctly Wait until grass becomes dry Mow it in two steps Slow down sufficiently Run engine at full throttle r Clean Mow it in two steps or...

Page 46: ...w engine speed Too fast travelling speed Foreign matter caught between blade and blade support Foreign matter caught in a pulley Defective engine Clean Repair it Consult your dealer Replace them with new ones Re tighten them to 1300 kgf cm Adjust belt tension spring properly Mow at full throttle r Slow down Clean Clean Consult your dealer Clean Replace it with a new one Inject grease Clean Consult...

Page 47: ... AND REASSEMBLY OF GEAR BOX 1 As for the detachment of the mower deck from the lawn mower 2 Remove the belt coverw and other necessary parts to check the belts and other components for wear or damage or inspect or service each part if required 1 CONSTRUCTION SCMA48 54 LH RH SMM54 ...

Page 48: ...gear case LH ASSY 1 Remove the blades 2 Remove the spring pin of the universal joint 3 Remove the universal joint 4 Remove the shaft cover 5 Shift the snap ring both LH and RH 40 to inside and shift the coupling 39 to remove the joint shaft shaft cover universal joint Left side Left side ...

Page 49: ...e metal 24 14 Take off the bevel gear 41 15 Remove the bevel gear 15 from the shaft 25 16 Remove the snap ring 27 17 Remove the oil seal 30 remove the snap ring 28 18 Take out the shaft 25 with hitting it 19 Remove the bearings 26 28 from the shaft 25 and blade metal 24 20 Loosen the 4 piaces of blades 11 and take off the input metal with the input shaft 4 and the bearing 5 21 Take out the bevel g...

Page 50: ... Remove the level plug and oil filter plug 2 and drain oil 8 Remove the oil seal 9 and remove the snap ring 8 9 Fix the spline of the shaft 5 by a vise with copper plate pull out the shaft from the gear case 10 Remove the bearing 7 from the shaft 5 11 Loosen the 4 piaces of bolts 20 take off blade metal 10 12 Take out the bevel gear 3 13 Remove the bevel gear 4 from the shaft 11 14 Remove the snap...

Page 51: ...bly and place it sideways and lock the input shaft in order to prevent it from turn ing the input shaft has a splined end c Install the jig on the output shaft end d Measure the backlash at 25 mm radius circumferenec and correct it if required by shimming Standard valus 0 3 0 5 mm including spline play between respective bevel gear and shaft SCMA48 54 SMM54 SCMA48 54 SMM54 D 25mm 20mm H 27mm 70mm ...

Page 52: ...ts so disassembled ones should be replaced with new ones When installing an oil seal take care not to allow the lips of the oil seal to turn up or the oil seal to be installed slanted Inspect the bearings for wear or abnormal noise and replace defective ones After reassembly make sure the shafts turn smoothly After reassembly apply sufficient grease to lubrica tion points 4 SIDE AND CENTER METAL 1...

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