Kubota Zd21 Zero Turn Mower Service Repair Workshop Manual

ZD18(F) . ZD21(F) . lD28(F). WSM SAFETY INSTRUCTIONS SAFETY FIRST This symbol, the industry's "Safety Alert Symbol", is used throughout this manual and on labels on the machine itself to warn of the possibility of personal injury. Read these instructions carefully. It is essential that you read the instructions and safety regulations before you attempt to repair or use this unit. Ii II A DANGER : Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury. A WARNING : Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury. A CAUTION : Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury. • IMPORTANT : Indicates that equipment or property damage could result if instructions are not followed . • NOTE : Gives helpful information. BEFORE SERVICING AND REPAIRING • Read all instructions and safety instructions in this manual and on your generator safety decals. • Clean the work area and generator. • Park the machine on a firm and level ground, and set the parking brake. • Lower the implement to the ground. • Stop the engine. and remove the key. • Disconnect the battery negative cable. • Hang a ''~O NOT OPERATE" tag in operator station. 1

ZD18(F) . ZD21(F)' ZD28(F), WSM SAFETY INSTRUCTIONS • + - SAFETY STARTING • Do not start the engine by shorting across starter terminals or bypassing the safety start switch. • Do not alter or remove any part of machine safety system. • Before starting the engine. make sure that all shift levers are in neutral positions or in disengaged positions. • Never start the engine while standing on ground. Start the engine only from operator's seat. SAFETY WORKING • Do not work on the machine while under the influence of alcohol, medication, or other substances or while fatigued. • Wear close fitting clothing and safety equipment appropriate to the job. • Use tools appropriate to the work. Makeshift tools, parts, and procedures are not recommended. • When servicing is performed together by two or more persons, take care to perform all work safely. • Do not work under the machine that is supported solely by a jack. Always support the machine by safety stands. • Do not touch the rotating or hot parts while the engine is running. • Never remove the radiator cap while the engine is running, or immediately after stopping. Otherwise, hot water will spout out from radiator. Only remove radiator cap when cool enough to touch with bare hands. Slowly loosen the cap to first stop to relieve pressure before removing completely. • Escaping fluid (fuel or hydraulic oil) under pressure can penetrate the skin causing serious injury. Relieve pressure before disconnecting hydrauliC or fuel lines. Tighten all connections before applying pressure. AVOID FIRES • Fuel is extremely flammable and explosive under certain conditions. Do not smoke or allow flames or sparks in your working area. • To avoid sparks from an accidental short circuit, always disconnect the battery negative cable first and connect it last. • Battery gas can explode. Keep sparks and open flame away from the top of battery, especially when charging the battery. • Mark sure that no fuel has been spilled on the engine. 2

WSM VENTILATE WORK AREA • If the engine must be running to do some work, make sure the area is well ventilated. Never run the engine in a closed area. The exhaust gas contains poisonous carbon monoxide. PREVENT ACID BURNS • Sulfuric acid in battery electrolyte is poisonous. It is strong enough to burn skin, clothing and cause blindness if splashed into eyes. Keep electrolyte away from eyes, hands and clothing. If you spill electrolyte on yourself, flush with water, and get medical attention immediately. DISPOSE OF FLUIDS PROPERLY • Do not pour fluids into the ground, down a drain, or into a stream, pond, or lake. Observe relevant environmental protection regulations when disposing of oil, fuel, coolant, electrolyte and other harmful waste. PREPARE FOR EMERGENCIES • Keep a first aid kit and fire extinguisher handy at all times. • Keep emergency numbers for doctors, ambulance service. hospital and fire department near your telephone. 3

---------------------- ZD18(F) 'ZD21 (F) 'ZD28(F), WSM SAFETY INSTRUCTIONS SAFETY DECALS . The following safety decals are installed on the machine. If a decal becomes damaged, illegible or is not on the machine, replace it. The decal part number is listed in the parts list. [2018' 2021 . 2028] 7. DANGER, WARNING AND CAUTION LABELS (1) Part No. K3111-8817·3 A WARNING (2) Part No. K5112-7312-2 trr:;..\ OEPR:SS PARKING BRAKE PEDA. 8. \\[.)J UNTIL LOCKED #!!!:; ADANGER ~\ PULL BACK LEVER TO ~ I \~ HHr:ASI:: PARKING lOCK U !:Q (3) Part No. K5112·7311-2 DO NOT PUT HANDS OR FEET T1 INTO MOWER WHEN ENGINE IS RUNNING, - LA WA,RNING • II • The correct illustration shows the ROPS 4

ZD18(F)' ZD21(F)' ZD28(F), WSM SAFETY INSTRUCTIONS (1) Part No. K3111-6585-1 Diesel fuel No fire only [0 IE S E L) (2) Part No. K3111-6591-1 (3) Part No. 18620-8806-1 d ACAUTION A WARNING • The correct illustration shows the ROPS T15060ZZ00201 5

ZD18(F) . ZD21 (F) . ZD28(F), WSM SAFETY INSTRUCTIONS (1) Part No. K1211-6115-1 (2) Part No. K1211-6116-1 (3) Part No. K3111-6586-1 Stay clear of engine KEEP OUT OF THE REACH OF CHI LOREN fan and fan belt. 00 NOT TIP 00 NOT OPEN BATTERY' FLUSH ~GET EYES MEDICAL IMMEDIATELY • HELP WI'rH WATER FAST I SHIElD : EYES I EXPLOSIVE GASESw CAUSE : IlJIIOIIESS DR IIJURY NO • SPAillS • fWIEi • 1.0l11S CARE OF DANGER, WARNING AND CAUTION LABELS 1. Keep danger, warning and caution labels clean and free from obstructing material. 2. Clean danger, warning and caution labels with soap and water, and dry with a soft cloth. 3. Replace damaged or missing danger, warning and caution labels with new labels. 4. If a component with danger, warning or caution label(s) affixed is replaced with new part, make sure new label(s) is(are) attached in the same location(s) as the replaced component. 5. Mount new danger, warning and caution labels by applying on a clean dry surface and pressing any bubbles to outside edge. T15060ZZ00301 6

---------------------- ZD18(F) . ZD21 (F) . ZD28(F), WSM SAFETY INSTRUCTIONS [ZD18F' ZD21 F' ZD28F] 7. DANGER, WARNING AND CAUTION LABELS (2) Part No. K5112-7312-2 ADANGER DO NOT PUT HANDS OR FEET INTO MOWER WHEN ENGINE IS RUNNING (4) Part No. K3151-6581-1 (1) Part No.K3111-8817-3 A WARNING (tr;\\ DEPRESS PAR,ING BflAKt PcDA, 8' \\[.11 JNT "LOCKED ~ ~\ PUL. BACK LEVER TO .!) I \~ RELEASE PAflKING LOCK U !:9 (3) Part No. K5112-7311-2 T15061ZZ003Q1 7

ZD18(F)' ZD21 (F) . ZD28(F). WSM SAFETY INSTRUCTIONS (5) (1) Part No. K3111·6585·1 (2) Part No. K3111-6591-1 Diesel fuel only (0 IE S E L] (3) Part No. 18620·8806-1 ACAUTION ~ ~ (4) Part No. K3151-6583-1 (5) Part No. K2591-6564-1 (6) Part No. K2591-6557-1 A WARNING A WARNING Neller modify or repair a ROPS because welding, grinding, drilling or cutting any portion may weaken the structure. l~ 10 AVOID PERSONAL INJURY DR A CAUTION DEATH FROM ROLl·OVEWR 1 Keep Roil· Over Protective TO AVOID INJURY Slruc!u'es (ROPS) ,n the WHEN RAISING OR upnght and Ic:kod posItion FOLDING ROPS: 2 Fa"'en SEAT BEL~ before • Set parkmg brake operating and stop engine. • Remove any obstruction that may prevent raising or folding of the ROPS. • Do not allow any bystanders • Always perform function from a stable position at the rear of the tractor. • Hold the top of the ROPS securely when raising or folding. • Make sure all pins are Installed and locked. I T15061ZZ00401 8

ZD18(F) . ZD21 (F) . ZD28(F). WSM SAFETY INSTRUCTIONS (1) Part No. K1211-6115-1 (2) Part No. K1211-6116-1 (3) Part No. K3111-6586-1 ® NO • SHIllS • fIJIIES • IMOlIIIIl Stay clear of engine KEEP OUT Of THE REACH OF CHILDREN fan and fan belt. 00 NOT TIP 00 NOT OPEN BATTERY' flUSH ~GET EYES MEDICAL IMMEDIATELY . HELP WITH WATER FAST CARE OF DANGER, WARNING AND CAUTION LABELS 1. Keep danger, warning and caution labels clean and free from obstructing material. 2. Clean danger, warning and caution labels with soap and water, and dry with a soft cloth. 3. Replace damaged or missing danger, warning and caution labels with new labels. 4. If a component with danger. warning or caution label(s) affixed is replaced with new part, make sure new label(s) is(are) attached in the same location(s) as the replaced component. 5. Mount new danger, warning and caution labels by applying on a clean dry surface and pressing any bubbles to outside edge. T15060ZZ00301 9

ZD18(F)' ZD21(F)' ZD28(F), WSM SPECIFICATIONS SPECIFICATIONS Model ZD18 ZD21 ZD28 Maximum gross power 13,4 kW (18 HP)'1 15.7 kW (21 HP)*1 20.9 kW (28 HPr' • Model D722-E-XFM5 D782-E-XFM5 Dl105-E-ZD Type Indirect injection, vertical, water cooled, 4-cycle diesel engine I Number of cylinders 3 • I Bore and stroke 67.0 x 68.0 mm 67,0 x 73.6 mm 78.0 x 78.4 mm (2.64 x 2.68 in.) (2.64 x 2.90 in.) (3.07 x 3.09 in.) Total displacement 719 cm 3 (43.9 cu.in.) 778 cm 3 (47,5 cu,in.) 1123 cm 3 (68.5 cu.in.) Rated revolution 3200 rpm 3000 rpm i Combustion chamber Spherical type (E-TVCS) ! Fuel injection pump Bosch MD type mini pump • Governor Centrifugal bali mechanical governor Engine Injection nozzle Bosch throttle type Throttle type ~i~ 0.33 to 0.37 rad. (19° to 21°) before T.D.C. der 1-2-3 essure 13.73 MPa (140 kgf/cm 2 , 1990 psi) Lubricating system Forced lubrication by gear pump Cooling system Pressurized radiator, forced circulation with water pump Lubricating oil API Service classification CC or CD, Below 0 °C (32 OF) : SAE lOW or 10W-30, 0 to 25°C (32 of to 77 Q F) : SAE 20 or 1 OW-30, Above 25°C (77 OF) : SAE 30 or 10W-30 Starting system Electric starter (12 V, 1.1 kW) Battery 51 R (12 V, 450 CCA) Fuel No. 2-D Diesel fuel (ASTM D975) [No. l-D diesel fuel, if temperature is below 10 °C (14 OF)) Fuel tank 30 L (5.8 U.S.gals., 4.8Imp.gals.) Engine crankcase 3.2 L 3.5 L 3.4 L (3.4 U.S.qts., 2.8 Imp.q1s.) (3.7 U.S.qts., 3.1 Imp.q1s.) (3.6 U.S.qts., 3.0 Imp.q1s,) Engine coolant 2.6 L 3.8 L (2.7 U.S.qts., 2.3 Imp.qts.) (4.0 U.S.qts., 3.3 Imp.qts.) Capacities Recovery tank 0.25 L (0.26 U.S.qts., 0.22 Imp,qts.) Transmission (Including 4.0 L (4.2 U.S.qts., 3.5 Imp.qts.)*2 HST and cylinder) Rear axle gear case 1.8 L (1.9 U.S.q1s .• 1.6 Imp.qts.j*2 each Mower gear case oil 0.40 L (0.42 U.S.qts., 0.35 Imp.qts.) Front 15 x 6.0-6 (4PR) Rib Tires Rear 23 x 10.5-12 (4PR) Turf 24 x 12.0-12 (4PR) Turf o to 14.5 km/h o to 15.0 km/h o to 15.0 km/h Forward (0 to 9.0 mph)*3 (0 to 9.3 mph)*3 (0 to 9.3 mphr 4 Travelling speeds o to 8.0 km/h oto 8.3 km/h Oto 8.3 km/h Reverse (0 to 5.0 mph)*3 (0 to 5.2 mph)"3 (0 to 5.2 mph)*4 • * , NOTE. Manufacturer s estimate .2 Oil amount when the oil level is at the upper level. .3 At 3200 engine rpm .4 At 3000 engine rpm WI 028929 10

Kubota Zd21 Zero Turn Mower Service Repair Workshop Manual

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