Toro Lawn-Boy Precision Z320H Service Manual Download Page 1

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TimeCutter

Precision

Zero Radius Turn Riding Mower

Service Manual

Consumer Products

Summary of Contents for Lawn-Boy Precision Z320H

Page 1: ...TimeCutter Z Precision Z Zero Radius Turn Riding Mower Service Manual Consumer Products...

Page 2: ...TimeCutter Z model year 2003 2006 and Lawn Boy Precision Z model year 2005 2006 are covered in this manual The manual may also be speci ed for use on later model products The hydrostatic transaxle is...

Page 3: ...Front Castor Fork Removal and Installation Removal Installation Castor Support Removal Installation Side Panel Removal Left Side Panel Removal Installation Right Side Panel and Gas Tank Removal Insta...

Page 4: ...Purpose Location How It Works Testing Coil Resistance Measurement Measuring Clutch Current Draw Park Brake Switch Purpose Location How It Works Testing Seat Switch Purpose Location How It Works Testin...

Page 5: ...ide to Side Adjusting the Front to Rear Blade Slope Inspecting the Belts Replacing the Mower Belt Removing the Mower Installing the Mower 48 Mower Decks Leveling the Mower from Side to Side Adjusting...

Page 6: ...iv TimeCutter Z Precision Z Service Manual THIS PAGE INTENTIONALLY LEFT BLANK TABLE OF CONTENTS...

Page 7: ...utter Z Precision Z Service Manual 1 2 3 4 5 6 Safety Information Speci cations Chassis Hydro Gear Transaxle Electrical Systems Mower Decks 1 2 3 4 5 6 TIMECUTTER Z PRECISION Z SERVICE MANUAL SAFETY I...

Page 8: ...r other components which may increase in temperature during operation while the unit is running or shortly after it has been running Avoid fires and explosions Avoid spilling fuel and never smoke whil...

Page 9: ...eCutter Z Precision Z Service Manual 1 2 3 4 5 6 3 4 5 6 TIMECUTTER Z PRECISION Z SERVICE MANUAL SPECIFICATIONS Safety Information Speci cations Chassis Hydro Gear Transaxle Electrical Systems Mower D...

Page 10: ...dth with de ector up 18 44Z 60 152 4cm with deck de ector down 46 6 118 4cm Gate width with deck de ector up Z480 62 5 158 8cm with deck de ector down 53 5 135 9cm Gate width with deck de ector up Wei...

Page 11: ...ade mid mount rotary Drawn 13 gauge steel deck with welded mounting brackets Frame supported Blade Tip Speed Model Speed 14 38Z Z380 16 760 ft min 3300 RPM nominal 17 270 ft min 3400 RPM max 16 42Z 17...

Page 12: ...ith deck de ector up Z330LX Z340HLX 50 7 128 8cm with deck de ector down 46 0 116 8cm Gate width with deck de ector up Z350HLX 60 152 4cm with deck de ector down 46 6 118 4cm Gate width with deck de e...

Page 13: ...orted 44 112cm cut right side discharge two blade mid mount rotary Drawn 13 gauge steel deck with welded mounting brackets Frame supported Blade Tip Speed Model Speed Z320H Z310 16 760 ft min 3300 RPM...

Page 14: ...ill only give you a false reading or no reading at all since this is the oil expansion area If the oil needs to be checked the transaxle must be removed to check oil level and IT CAN BE ONLY CHECKED C...

Page 15: ...nual SPECIFICATIONS Hydrostatic Transaxles cont MVC 206X MVC 205X Note If you are replacing the transaxle after you have installed the hydro rods remove the nut and washer located on the cam plate Als...

Page 16: ...g torque feature hardness of the surface underneath of the fastener s head or similar condition which affects the installation As noted in the following tables torque values should be reduced by 25 fo...

Page 17: ...th Regular Height Nuts SAE J995 Grade 2 or Stronger Nuts In lb In lb N cm In lb N cm In lb N cm 6 32 UNC 10 2 13 2 147 23 15 2 170 20 23 2 260 20 6 40 UNF 17 2 190 20 25 2 280 20 8 32 UNC 13 2 25 5 28...

Page 18: ...etc Note The nominal torque values listed above are based on 75 of the minimum proof load specified in SAE J1199 The tolerance is approximately 10 of the nominal torque value Thin height nuts include...

Page 19: ...CHASSIS TimeCutter Z Service Manual 3 1 TIMECUTTER Z SERVICE MANUAL Safety Information Specifications Chassis Hydro Gear Transaxle Electrical Systems Mower Decks 1 2 3 4 5 6...

Page 20: ...the engine model and serial number information Figure 4 Transaxle Model and Serial Number Figure 4 Greasing and Lubrication The unit should be greased every 25 hours or more often when operated in du...

Page 21: ...he pivot castor supports Figure 7 Figure 7 mvc 053 3 Remove the plastic dust cover e ring and washer Slide the castor fork down out of the pivot castor support Figure 8 Figure 8 mvc 070 Installation F...

Page 22: ...portion of the left side panel Two fasteners are located in the middle under the side panel connecting the panel to the rear support bracket The third fastener is located at the rear of the panel Figu...

Page 23: ...e panel 3 Remove the 4 screws on the control panel and move the control panel away from the side panel Figure 14 Figure 14 mvc 065 4 Remove the bolt and nut securing the rear of the side panel to the...

Page 24: ...tank and right side panel in reverse order Lift Arm Assembly Removal 1 Remove the two bolts and washers retaining the lift lever to the lift block and remove them from the lift arm assembly Figure 19...

Page 25: ...nnection to the electric clutch Figure 22 Figure 22 mvc 079 4 Remove the PTO clutch bolt and remove the electric clutch Figure 23 Figure 23 mvc 081 5 Disconnect the spring connected to the rear idler...

Page 26: ...rear spring bracket Figure 27 Figure 27 mvc 093 3 Apply anti seize lubricant on the crankshaft and install the electric PTO clutch on the engine crankshaft make sure the slot on the clutch goes into...

Page 27: ...HYDRO GEAR TRANSAXLE TimeCutter Z Service Manual 4 1 TIMECUTTER Z SERVICE MANUAL Safety Information Specifications Chassis Hydro Gear Transaxle Electrical Systems Mower Decks 1 2 3 4 5 6...

Page 28: ...ve the transaxle and drain the oil through the fluid fill port Fill unit to the proper level refer to General Specifications on page 2 2 Reinstall transaxles and perform Purging Procedures Hydro Gear...

Page 29: ...transaxle then remove the vent hoses Cover the open hole in each transaxle with tape to prevent dirt entry Figure 31 Figure 31 mvc 096 6 Loosen the four bolts and nuts holding the transaxles to the h...

Page 30: ...Figure 36 mvc 115 11 Lift up on the front of the hydro frame and move the hydro mount frame toward the rear end of the unit Use caution not to bend the right and left brake rods and the hydro rods Fig...

Page 31: ...move the nut and washer on the cam plate Figure 40 Figure 40 mvc 206 Assembly Reverse the order of removal Wheel Hub Removal 1 Remove the bolt holding the locking tab to the hub Figure 41 Figure 41 mv...

Page 32: ...ht positions Drop it down so the notches in the hydro frame engage with the two bolts and tubes located on the frame of the unit 3 Before raising the rear portion of the transaxle connect the two hydr...

Page 33: ...the frame and raise the unit Remove the floor jack stands and install the right and left rear tires For stability position the floor jack stands at the rear of the unit Figure 49 Figure 49 mvc 128 10...

Page 34: ...transaxle has been installed Air creates inefficiency because its compression and expansion rate is higher than that of the oil normally approved for use in hydrostatic drive systems The resulting sym...

Page 35: ...e arm on the transaxle you are performing the neutral adjustment on In this case we are performing a neutral adjustment on both transaxles Make sure the brake arms are clear of the cog brake system di...

Page 36: ...point between forward and reverse wheel rotation Now check the alignment of the bolt on the end of the control rod The bolt should enter at a right angle to the actuator arm assembly Figure 58 Figure...

Page 37: ...poor tracking tire pressure bent or dragging wheel loose linkage etc Figure 60 Figure 60 mvc 183 Behind the right and left actuator arm is an eccentric bushing There is a bolt and nut through the cen...

Page 38: ...g meet Figure 64 Figure 63 mvc 177 Figure 64 mvc 179 3 Move the forward reverse handle to the park position handles out and then back to the run position handles in Make sure the brake arms are clear...

Page 39: ...igure 67 mvc 150 4 Remove the nut on the brake link Figure 68 Figure 68 mvc 152 5 Remove the bolt and nut retaining the rear of the hydro rod to the control arm and slide the hydro rod towards the rea...

Page 40: ...ud Figure 72 Figure 72 mvc 159 Actuator Arm Installation 1 Slide the actuator on the welded stud and install a washer and nut and tighten Figure 73 Figure 73 mvc 155 2 Install the park brake switch in...

Page 41: ...l 4 15 4 Install the brake link to the bellcrank with a nut and tighten Figure 75 Figure 75 mvc 162 5 Connect the rear of the hydro rod to the transaxle control arm and tighten Figure 76 Figure 76 mvc...

Page 42: ...urer suggested pressure Repair or replace linkage Repair or replace bypass UNIT IS NOISY Oil level low or contaminated oil Excessive loading Loose parts Bypass assembly sticking Air trapped in hydraul...

Page 43: ...ELECTRICAL SYSTEM TimeCutter Z Service Manual 5 1 TIMECUTTER Z SERVICE MANUAL Safety Information Specifications Chassis Hydro Gear Transaxle Electrical Systems Mower Decks 1 2 3 4 5 6...

Page 44: ...85 and 86 are connected to a coil Applying 12 volts to these terminals energizes the coil turning it into an electromagnet 2 Switch Terminals 30 87 and 87a are actually part of a single pole double th...

Page 45: ...use it has a large contact area with the contact terminals it can easily handle the high current loads required by the starter motor of the engine When 12 volts is applied to the coil it becomes an el...

Page 46: ...START The START position is spring loaded so the cylinder automatically returns to RUN once the key is released Figure 84 Figure 84 mvc 166 Testing 1 Disconnect the switch from the wiring harness 2 Ve...

Page 47: ...to the wire that goes directly to the electric clutch When the PTO is pulled out to the ON position voltage flows to the electric clutch and engages Testing 1 Disengage the PTO set the parking brake a...

Page 48: ...ELECTRICAL SYSTEM 5 6 TimeCutter Z Service Manual Figure 86 2 24 5...

Page 49: ...cause of electrical problems use the troubleshooting steps These procedures will help you determine if the clutch has failed or is the cause of the electrical problem Coil Resistance Measurement 1 Dis...

Page 50: ...xles are in neutral and the park brakes are engaged It is activated when the forward reverse control levers are in the park position handles in the out position Location The park brake switches are lo...

Page 51: ...he engine will shut down Location The seat switch is fastened to the bottom of the seat base Figure 92 Figure 92 mvc 194 How it Works When the seat is vacated the switch is open and there should be NO...

Page 52: ...5 10 TimeCutter Z Service Manual THIS PAGE INTENTIONALLY LEFT BLANK...

Page 53: ...MOWER DECKS TimeCutter Z Service Manual 6 1 TIMECUTTER Z SERVICE MANUAL Safety Information Specifications Chassis Hydro Gear Transaxle Electrical Systems Mower Decks 1 2 3 4 5 6...

Page 54: ...e to side Figure 94 Measure between the outside cutting edges and the flat surface Figure 94 If both measurements are not within 3 16 inch 5mm an adjustment is required refer to steps 6 through 8 Figu...

Page 55: ...on page 2 2 4 Check and adjust the side to side blade level if you have not checked the setting refer to Leveling the Mower from Side to Side on page 6 2 5 Measure the length of the rod extending out...

Page 56: ...rod Figure 101 Tighten either one to remove the slack Figure 99 Figure 99 m 4634 13 When the front to rear blade slope is correct tighten the locknuts and re check the side to side level of the mower...

Page 57: ...rection shown in Figure 100 and route the belt onto the idler pulley Figure 100 8 Rotate the belt guide on the idler arm so it is 1 32 to 1 8 inch 0 8 3mm away from the side of the mower belt Figure 1...

Page 58: ...e front support rod on each side of the mower Figure 101 Figure 101 m 6431 5 Remove the hairpin cotter and washer from the adjusting rod Figure 102 on each side of the mower 6 Remove the hairpin cotte...

Page 59: ...lide the mower under the tractor 4 Lower the height of cut lever to the lowest position 5 Attach the adjusting rod to the tractor with the washer and hairpin cotter Figure 102 on each side of the mowe...

Page 60: ...washer from the leveling bracket Figure 104 7 To level the blade s reposition the leveling bracket s in a different hole and install the washer and hairpin cotter Figure 104 A front hole lowers the b...

Page 61: ...the opposite side of the mower Figure 105 m 6432 8 Set the height of cut at position D 3 inch 76 mm and carefully rotate the blades so they are facing front to rear Figure 106 9 Measure from the tip o...

Page 62: ...tting grass frayed belt edges burn marks and cracks are signs of a worn mower belt Replace the mower belt if any of these conditions are evident 1 Park the machine on a level surface and disengage the...

Page 63: ...s to the brake position stop the engine remove the key and wait for all moving parts to stop before leaving the operating position 3 Lower the height of cut lever to the lowest position 4 Remove the h...

Page 64: ...TO 2 Move the motion control levers to the brake position stop the engine remove the key and wait for all moving parts to stop before leaving the operating position 3 Slide the mower under the tractor...

Page 65: ...awn 1 Park the machine on a level surface and disengage the blade control switch 2 Move the motion control levers to the brake position stop the engine remove the key and wait for all moving parts to...

Page 66: ...on a level surface and disengage the blade control switch 2 Move the motion control levers to the brake position stop the engine remove the key and wait for all moving parts to stop before leaving the...

Page 67: ...adjusting both adjustment nuts evenly check the front to rear slope again Continue adjusting the nuts until the front blade tip is 1 16 5 16 1 6 7 9mm lower than the rear blade tip Fig A6 005 Note Aft...

Page 68: ...ts Fig A6 007 on each side of the mower Note which hole the leveling bracket is mounted in for future installation Slide the brackets off of the mounting pin 7 Slide the mower rearward to remove the m...

Page 69: ...f any of these conditions are evident 1 Park the machine on a level surface and disengage the blade control switch 2 Move the motion control levers to the brake position stop the engine remove the key...

Page 70: ...over the outside spindles 6 1 Park the machine on a level surface and disengage the blade control switch 2 Move the motion control levers to the brake position stop the engine remove the key and wait...

Page 71: ...TimeCutter Z Service Manual 6 13...

Page 72: ...TimeCutter Z Precision Z Service Manual Form No 492 4780 Revised 4 07...

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