Jonsered JNA19H48B Owner'S Manual Download Page 29

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BATTERY

FUSE

RED

BLACK

IGNITION

UNIT

SPARK

PLUGS GAP

(2 PLUGS ON

TWIN CYL. ENGINES)

NON-REMOVABLE

CONNECTIONS

REMOVABLE

CONNECTIONS

BLACK

ORANGE

BROWN

SOLENOID

WIRING INSULATED CLIPS

NOTE:

IF WIRING INSULATED

CLIPS WERE REMOVED FOR
SERVICING OF UNIT, THEY
SHOULD BE REPLACED TO
PROPERLY SECURE YOUR WIRING.

AMMETER

RED

(OPTIONAL)

HEADLIGHTS

BLACK

RED

ELECTRIC CLUTCH

CLUTCH / BRAKE

(PEDAL UP)

PTO (DISENGAGED)

RED

WHITE

GREEN

BLUE

BLACK

HOUR

METER

(OPTIONAL)

BLUE

STARTER

PTO SWITCH

CIRCUIT

POSITION

OFF

C + F, B + E, A + D

C + G, B + H

F C

FUEL SHUT-OFF SOLENOID

FUEL
LINE

IGNITION

SWITCH

OPERATOR

PRESENCE

RELAY #1

87A

SEAT SWITCH

(NOT OCCUPIED)

87A

RELAY

REGULATOR

ALTERNATOR

28 VOLTS AC @ 3600 RPM
(REGULATOR DISCONNECTED)

CHARGING SYSTEM OUTPUT
16 AMP DC @ 3600 RPM

IGNITION SWITCH

CIRCUIT

POSITION

OFF

B+A1

RUN/LIGHT

B + S + A1

START

M+G+A1

B+A1

RUN

“MAKE”

A2+L

NONE

TRACTOR - MODEL NO. LT2119A (JNA19H48B), PRODUCT NO. 954 13 00-71

SCHEMATIC

Summary of Contents for JNA19H48B

Page 1: ...MODEL NO LT2119A JNA19H48B 19 0 HP 48 Inch Lawn Tractor 532 18 68 63 Rev 2 07 01 03 RD TR PRINTED IN U S A 00949 jonsered ...

Page 2: ...turer s recommendations for wheel weights or counterweights to improve stability Useextracarewithgrasscatchersorotherattachments These can change the stability of the machine Keep all movement on the slopes slow and gradual Do not make sudden changes in speed or direction Avoid starting or stopping on a slope If tires lose trac tion disengage the blades and proceed slowly straight down the slope D...

Page 3: ...the watchful care of another responsible adult Be alert and turn machine off if children enter the area Before and when backing look behind and down for small children Mow up and down slopes 15 Max not across Remove obstacles such as rocks tree limbs etc Watchforholes ruts orbumps Uneventerraincouldoverturn the machine Tall grass can hide obstacles Use slow speed Choose a low gear so that you will...

Page 4: ... technicians and the proper tools to service or repair this tractor Please read and retain this manual The instructions will enable you to assemble and maintain your tractor properly Always observe the SAFETY RULES CUSTOMER RESPONSIBILITIES Read and observe the safety rules Follow a regular schedule in maintaining caring for and using your tractor Follow the instructions under Maintenance and Stor...

Page 5: ... 18 Steering Wheel 1 Knob 1 Washer 17 32 x 1 3 16 x 12 Gauge Seat Steering Wheel Insert Steering Wheel Adapter 2 Keys Slope Sheet Keys 1 Front Plate Assembly 5 Retainer Springs double loop 2 Retainer Springs single loop 2 Flanged Pins Nose Roller Brackets Rod Retainer Spring 1 Large Flat Washer 1 Hex Bolt 1 4 28 x 1 1 4 1 Locknut 1 4 28 1 Locknut 1 2 20 Steering Extension Shaft Steering Boot 1 Oil...

Page 6: ...he steering wheel TO REMOVE TRACTOR FROM CARTON UNPACK CARTON Remove all accessible loose parts and parts cartons from carton Cut along dotted lines on all four panels of carton Remove end panels and lay side panels flat Remove mower and packing materials Check for any additional loose parts or cartons and remove BEFORE REMOVING TRACTOR FROM SKID ATTACH STEERING WHEEL See Fig 1 ASSEMBLE EXTENSION ...

Page 7: ... the Operation section of this manual SHOULDER BOLT ADJUSTING BAR PIN RETAINER SPRING FIG 4 GAUGE WHEEL 3 8 16 CENTER LOCKNUT 3 8 WASHER NOTE You may now roll or drive your tractor off the skid Follow the appropriate instruction below to remove the tractor from the skid TO ROLL TRACTOR OFF SKID See Op eration section for location and function of controls Press lift lever plunger and raise attachme...

Page 8: ...etainer springs as shown Position front plate assembly between front mower brackets Raise deck and plate assembly to align holes and insert flanged pins Secure pins with double loop retainerspringsbetweentheplateassemblyandmower brackets NOTE To assist in locating hole in flanged pin the hole in pin is inline with notch on head of pin If necessary move mowerside to sidetogivespacebetweenplateandmo...

Page 9: ...e been completed No remaining loose parts in carton Battery is properly prepared and charged Minimum 1 hour at 6 amps Seat is adjusted comfortably and tightened securely All tires are properly inflated For shipping purposes the tires were overinflated at the factory Be sure mower deck is properly leveled side to side front to rear for best cutting results Tires must be properly inflated for leveli...

Page 10: ...could result in serious injury or death The safety alert symbol is used to identify safety inform ation about hazards which can result in death serious injury and or property damage DANGER indicates a hazard which if not avoided will result in death or serious injury WARNING indicates a hazard which if not avoided could result in death or serious injury CAUTION indicates a hazard which if not avoi...

Page 11: ... Used for braking the tractor and start ing the engine HEIGHTADJUSTMENTKNOB Usedtoadjustthemower cutting height PARKING BRAKE Locks clutch brake pedal into the brake position ATTACHMENT LIFT LEVER Used to raise and lower the mower deck or other attachments mounted to your tractor LIFT LEVER PLUNGER Used to release attachment lift lever when changing its position IGNITION SWITCH Used for starting a...

Page 12: ... eliminate this possibility al ways stop engine when stopping tractor on grass areas TO ADJUST MOWER CUTTING HEIGHT See Fig 8 The cutting height is controlled by turning the height ad justment knob in desired direction Turn knob clockwise to raise cutting height Turn knob counterclockwise to lower cutting height PARKING BRAKE ENGAGED POSITION DISENGAGED POSITION ATTACHMENT CLUTCH LEVER PULL OUT TO...

Page 13: ...nd types of grass being mowed The average lawn should be cut to approximately 2 1 2 inches during the cool season and to over 3 inches during hot months For healthier and better looking lawns mow often and after moderate growth For best cutting performance grass over 6 inches in height should be mowed twice Make the first cut relatively high the second to desired height CLEVIS PIN RETAINER SPRING ...

Page 14: ...ped from the factory already filled with summer weight oil Check engine oil with tractor on level ground Remove oil fill cap dipstick and wipe clean reinsert the dipstick and screw cap tight wait for a few seconds remove and read oil level If necessary add oil until FULL mark on dipstick is reached Do not overfill For cold weather operation you should change oil for easier starting See OIL VISCOSI...

Page 15: ...O LEVEL MOWER HOUSING in the Service and Adjustments section of this manual The left hand side of mower should be used for trim ming Drive so that clippings are discharged onto the area that has been cut Have the cut area to the right of the machine This will result in a more even distribution of clippings and more uniform cutting Whenmowinglargeareas startbyturningtotherightso that clippings will...

Page 16: ...t_sch tractore new1 GENERAL RECOMMENDATIONS The warranty on this tractor does not cover items that have beensubjectedtooperatorabuseornegligence Toreceive full value from the warranty operator must maintain tractor as instructed in this manual Some adjustments will need to be made periodically to properly maintain your tractor All adjustments in the Service and Adjustments section of this manual s...

Page 17: ...l new or resharpened blade with stamped THIS SIDE UP facing deck and mandrel assembly IMPORTANT TO ENSURE PROPER ASSEMBLY CENTER HOLE IN BLADE MUST ALIGN WITH STAR ON MANDREL ASSEMBLY Install and tighten blade bolt securely 45 55 Ft Lbs torque IMPORTANT SPECIAL BLADE BOLT HEAT TREATED 5 8 BOLT OR PIN BLADE CENTER HOLE FIG 14 BATTERY Yourtractorhasabatterychargingsystemwhichissufficient for normal ...

Page 18: ...the tractor is not used for 50 hours in one year TEMPERATURE RANGE ANTICIPATED BEFORE NEXT OIL CHANGE SAE VISCOSITY GRADES 20 0 30 40 80 100 30 20 0 20 30 40 F C 32 10 10 60 5W 30 SAE 30 oil_visc_chart1_e FIG 16 TO CHANGE ENGINE OIL See Figs 15 and 16 Determine temperature range expected before oil change All oil must meet API service classification SF SJ Be sure tractor is on level surface Oil wi...

Page 19: ...er Squeeze it dry in a clean cloth Saturate it in engine oil Wrap it in clean absorbent cloth and squeeze to remove excess oil If very dirty or damaged replace pre cleaner TO SERVICE CARTRIDGE Clean cartridge by tapping gently on flat surface If very dirty or damaged replace cartridge Reinstall precleaner cartridge cover and secure with knobs IMPORTANT PETROLEUMSOLVENTS SUCHASKEROSENE ARE NOT TO B...

Page 20: ... PULLEY GROOVES If equipped turn height adjustment knob counter clockwise until it stops Lower mower linkage with attachment lift control Be sure belt tension rod is in disengaged position Install belt into electric clutch pulley groove Place the suspension arms on outward pointing deck pins Retain with double loop retainer spring with loops up as shown Install front plate assembly to tractor susp...

Page 21: ...any necessary adjustments check that both front plate links are equal in length If links are not equal in length adjust one link to same length as other link To lower front of blade loosen nut C on both front links an equal number of turns NOTE Each full turn of nut C will change distance B by approximately 3 16 Whendistance B is1 8 to1 2 loweratfrontthanrear tighten nut D against trunnion on both...

Page 22: ...ket CAUTION Rod is spring loaded Have a tight grip on rod and release slowly Remove screws from R H mandrel cover and remove cover Remove any dirt or grass clippings which may have accumulated around mandrels and entire upper deck surface DisconnectR H suspensionarmfromreardeckbracket by removing retainer spring Roll belt over the top of R H mandrel pulley carefully Remove belt from electric clutc...

Page 23: ...lation guide decal on bottom side of left footrest Remove mower See TO REMOVE MOWER in this section of this manual Disconnect clutch wire harness Remove clutch locator Remove belt from stationary idler and clutching idler Pull belt slack toward rear of tractor Carefully remove belt upwards from transmission input pulley and over cooling fan blades Pull belt toward front of tractor and remove downw...

Page 24: ...connect RED battery cable to positive battery terminal with hex bolt and keps nut as shown Tighten securely ConnectBLACKgroundingcabletonegative battery terminal with remaining hex bolt and keps nut Tighten securely Close terminal access doors Close hood FIG 29 FIG 28 RETAINING RING WASHERS SQUARE KEY REAR WHEEL ONLY AXLE COVER WEAK OR DEAD BATTERY FULLY CHARGED BATTERY TO START ENGINE WITH A WEAK...

Page 25: ...osencasingclamp screw and move choke cable until choke is completely closed Tighten casing clamp screw securely Replace air cleaner cover assembly and tighten knob FIG 31 TO REMOVE HOOD AND GRILL ASSEMBLY See Fig 31 Raise hood Unsnap headlight wire connector Stand in front of tractor Grasp hood at sides tilt toward engine and lift off of tractor To replace reverse above procedures CLAMP SCREW FIG ...

Page 26: ...AL FUEL SYSTEM PARTS SUCH AS CARBURETOR FUEL FILTER FUEL HOSE OR TANK DURING STORAGE ALSO EXPERIENCE INDICATES THAT ALCOHOL BLENDED FUELS CALLED GASOHOL OR USING ETHANOLORMETHANOL CANATTRACTMOISTUREWHICH LEADSTOSEPARATIONANDFORMATIONOFACIDSDURING STORAGE ACIDIC GAS CAN DAMAGE THE FUEL SYSTEM OF AN ENGINE WHILE IN STORAGE Drain the fuel tank Start the engine and let it run until the fuel lines and ...

Page 27: ...ition switch 7 Check replace ignition switch 8 Faulty solenoid or starter 8 Check replace solenoid or starter 9 Faulty operator presence switch es 9 Contact an authorized service center department Engine clicks but will not 1 Weak or dead battery 1 Recharge or replace battery start 2 Corroded battery terminals 2 Clean battery terminals 3 Loose or damaged wiring 3 Check all wiring 4 Faulty solenoid...

Page 28: ...en blade Tighten blade bolt 7 Buildup of grass leaves and trash under mower 7 Clean underside of mower housing 8 Mower drive belt worn 8 Replace mower drive belt 9 Blades improperly installed 9 Reinstall blades sharp edge down 10 Improper blades used 10 Replace with blades listed in this manual 11 Clogged mower deck vent holes from buildup of 11 Clean around mandrels to open vent holes grass leave...

Page 29: ...AKE PEDAL UP PTO DISENGAGED C G F B E A D H RED WHITE WHITE WHITE GREEN GREEN BLUE BLACK HOUR METER OPTIONAL BLUE STARTER PTO SWITCH CIRCUIT POSITION OFF C F B E A D ON C G B H B A G H D F C E FUEL SHUT OFF SOLENOID FUEL LINE IGNITION SWITCH G B S M A1 A2 L OPERATOR PRESENCE RELAY 1 85 86 30 87 87A SEAT SWITCH NOT OCCUPIED 87 87A 85 86 30 RELAY REGULATOR ALTERNATOR 28 VOLTS AC 3600 RPM REGULATOR D...

Page 30: ...30 28 29 26 24 42 43 27 27 25 41 27 27 40 33 30 50 REPAIR PARTS TRACTOR MODEL NO LT2119A JNA19H48B PRODUCT NO 954 13 00 71 ELECTRICAL 12 12 11 10 8 2 1 27 52 16 48 55 81 51 22 21 ...

Page 31: ...Cable Battery 6 Ga 11 red 25 532 14 61 48 Cable Battery 6 Ga 22 red w 16 wire 26 532 17 51 58 Fuse 27 873 51 04 00 Nut Keps Hex 1 4 20 Unc 28 532 14 54 91 Cable Ground 6 Ga 21 black 29 532 16 07 84 Switch Plunger Nc Gray 30 532 17 55 66 Switch Ign 33 532 14 04 01 Key Ign Molded Generic 40 532 17 97 24 Harness Ign 41 871 11 04 08 Bolt Blk Fin Hex 1 4 20 x 1 2 42 532 13 15 63 Cover Terminal Red 43 5...

Page 32: ...ODUCT NO 954 13 00 71 CHASSIS AND ENCLOSURES 64 74 10 30 51 57 53 52 54 55 17 29 28 12 209 31 1 209 2 9 208 209 209 5 5 207 144 26 26 60 26 144 26 10 142 208 13 208 11 143 60 209 142 145 37 37 18 14 14 38 212 58 219 20 219 23 159 chassis pl lt_stlt_23 209 ...

Page 33: ...13 53 Fender 31 532 13 99 76 Bracket 37 817 49 05 08 Screw Thdrol 5 16 18 x 1 2 38 532 17 57 10 Bracket Asm Pivot Mower Rear 51 873 80 04 00 Nut Lock w Insert 1 4 20 52 819 09 14 16 Washer 9 32 x 7 8 x 16 Ga 53 532 14 46 97 Bracket Grille Lh 54 532 16 14 64 Screw Hex Wshd 8 18 x 7 8 55 532 14 46 96 Bracket Grille Rh 57 874 78 04 12 Bolt Fin Hex 1 4 20 Unc x 3 4 58 532 18 44 61 Duct Air 60 872 14 0...

Page 34: ... 57 25 19 24 26 26 76 78 75 74 27 26 59 19 219 221 221 220 222 221 19 51 51 271 19 19 6 231 239 33 239 238 52 237 233 240 232 241 235 242 221 215 224 225 223 223 223 223 226 226 234 236 227 218 217 244 254 254 51 251 228 229 21 214 61 15 89 90 51 27 51 48 150 151 202 49 47 50 120 9 17 65 20 66 63 243 212 116 56 38 39 95 41 96 253 drive hydro stlt_31 ...

Page 35: ...66 532 15 47 78 Keeper Belt Engine 74 532 13 70 57 Spacer Axle 75 532 12 17 49 Washer 25 32 x 1 1 4 x 16 Ga 76 812 00 00 01 E Ring 77 532 12 35 83 Key Square 78 532 12 17 48 Washer 25 32 x 1 5 8 x 16 Ga 89 532 18 14 53 Console Shift 90 532 12 43 46 Nut Self Thd Wsh hd 1 4 Zinc 95 532 18 08 25 Rod Bypass 96 532 12 47 88 Retainer Spring 1 116 872 14 06 08 Bolt RDHD SQNK 3 8 16 Unc x 1 120 873 90 06 ...

Page 36: ...O LT2119A JNA19H48B PRODUCT NO 954 13 00 71 STEERING ASSEMBLY 5 5 4 3 43 6 43 8 10 40 32 11 8 6 87 46 46 8 6 87 29 88 71 17 43 91 2 1 41 42 37 36 37 38 12 39 44 51 54 93 40 34 68 67 67 67 13 65 68 15 15 15 29 29 82 steering_pl lt_49 ...

Page 37: ...4 06 00 Washer Lock Hvy Helical 3 8 36 532 15 50 99 Bushing Strg 37 532 15 29 27 Screw 38 532 17 20 93 Insert Cap Strg Wh 39 819 18 24 11 Washer 9 16 x 1 1 2 40 532 12 47 01 Lock nut 41 532 15 99 45 Adaptor Wheel Strg 42 532 16 96 33 Boot Steering Shaft 43 532 12 17 49 Washer 25 32 x 1 1 4 x 16 Ga 44 532 18 06 40 Extension Steering Shaft LR LT 46 532 12 12 32 Cap Spindle Fr Top Blk 51 873 54 04 00...

Page 38: ...racket Mounting Switch 13 532 12 12 48 Bushing Snap Blk Nyl 50 Id 14 872 05 04 12 Bolt Rdhd Sqnk 1 4 20 x 1 1 2 15 532 12 12 49 Spacer Split 28 x 88 Zinc 16 532 12 37 40 Spring Cprsn Plate 17 532 12 39 76 Nut Lock 1 4 Lge Flg Gr 5 Zinc 18 532 12 42 38 Cap Spring Seat 21 532 17 18 52 Bolt Shoulder 5 16 18 Unc 22 873 80 05 00 Nut Hex Lock W Ins 5 16 18 24 819 17 19 12 Washer 17 32 x 1 3 16 x 12 Ga 2...

Page 39: ...2 14 43 34 Sealant Tire 10 oz Tube 20 8 14 1 532 17 79 82 Decal Oper Inst Hyd E F 2 532 18 57 73 Decal Strg Wheel Logo 3 532 18 39 29 Decal Hood RH LH 5 532 18 07 09 Decal Engine 6 532 18 40 60 Decal Fender 8 532 17 05 63 Decal Warning 9 532 18 39 30 Decal Fender 10 532 15 71 40 Decal Fender Danger E F 11 532 16 29 27 Decal Hood Sides 12 532 17 85 02 Decal Clutch Brake KEY PART NO NO DESCRIPTION 1...

Page 40: ...IR PARTS TRACTOR MODEL NO LT2119A JNA19H48B PRODUCT NO 954 13 00 71 ENGINE 2 1 OPTIONAL EQUIPMENT Spark Arrester 29 10 6 5 72 13 26 25 4 8 32 31 34 33 37 33 39 17 16 17 3 81 23 45 14 38 engine bs intek twin_28 ...

Page 41: ...asy 16 811 05 06 00 Washer Lock Ext Tooth 3 8 17 817 06 06 24 Screw 3 8 16 x 1 1 2 23 532 16 98 37 Shield Browning 25 532 14 59 96 Choke Control 26 873 92 06 00 Nut Keps 3 8 24 Unf 29 532 13 71 80 Kit Spark Arrestor Flat Scrn 31 532 15 71 03 Tank Fuel 3 50 Rear 32 532 14 05 27 Cap Asm Fuel 33 532 12 34 87 Clamp Hose Blk 34 532 10 60 82 Pad Spacer 37 532 14 21 58 Line Fuel 38 532 18 16 54 Plug Drai...

Page 42: ...2 95 183 90 48_nose_roller_1 57 56 118 116 119 5 117 46 45 33 46 45 33 30 30 30 32 39 21 20 18 21 31 1 32 31 36 36 52 24 25 26 27 28 29 18 8 11 13 16 100 113 17 48 19 5 6 3 55 54 72 92 92 14 15 47 49 49 49 49 130 43 121 126 97 115 50 50 98 42 99 42 114 110 112 21 122 42 97 36 37 184 mower_deck 48prem_stlt ...

Page 43: ...r Secondary 48 532 17 43 68 V Belt Mower Primary 49 873 68 06 00 Nut Crownlock 3 8 16 Unc 50 872 11 06 12 Bolt Carriage 3 8 16 x 1 1 2 Gr 5 52 532 17 58 20 Pulley Idler Flat 46 Pri Drive 54 874 78 06 16 Bolt Fin Hex 3 8 16 x 1 55 872 14 06 08 Bolt Rdhd Sqnk 3 8 16 x 1 56 532 15 59 86 Bar Pnt Adjusting Wheel Gauge 57 532 15 69 41 Pin Head Rivet 72 819 13 13 12 Washer 13 32 x 13 16 x 12 90 874 76 05...

Page 44: ...OR MODEL NO LT2119A JNA19H48B PRODUCT NO 954 13 00 71 MOWER LIFT 36 4 5 6 2 3 1 6 5 4 7 23 24 25 27 28 29 30 50 26 37 41 40 38 49 18 17 16 15 54 54 13 12 11 13 13 31 53 32 32 13 52 49 49 51 51 13 13 20 lift rh 1pc stlt_13 8 ...

Page 45: ...ng 23 532 11 08 07 Nut Special 24 819 13 10 16 Washer 13 32 x 5 8 x 16 Ga 25 532 12 48 74 Spring 2 1 8 26 532 16 94 84 Retainer Clip 27 532 12 69 71 Rod Adj Lift Zinc 7 49 Wrk Lg 28 873 35 06 00 Nut Hex Jam 3 8 16 Unc 29 532 13 80 57 Knob Inf 3 8 16 Unc Blk W sym 30 532 15 02 33 Trunnion Infin Height 31 532 17 62 05 Trunnion 32 532 17 59 94 Nut Lift Link 7 16 20 36 532 15 50 97 Indicator Height ST...

Page 46: ...46 SERVICE NOTES ...

Page 47: ...the face Do not mow slopes greater than 15 degrees Make turns gradually to prevent tipping or loss of control Exercise extreme caution when changing direction on slopes 1 Fold this page along dotted line indicated above 2 Hold page before you so that its left edge is vertically parallel to a tree trunk or other upright structure 3 Sight across the fold in the direction of hill slope you want to me...

Page 48: ...00949 jonsered ...

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