Jonsered JNA16H42A Owner'S Manual Download

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OWNER'S MANUAL

MODEL NO. LT15A (JNA15H42A)
14.5 HP 42 Inch
Lawn Tractor

177120 1.16.01 TR

PRINTED IN U.S.A.

Summary of Contents for JNA16H42A

Page 1: ...OWNER S MANUAL MODEL NO LT15A JNA15H42A 14 5 HP 42 Inch LawnTractor 177120 1 16 01 TR PRINTED IN U S A ...

Page 2: ...manufacturer s recommendations for wheel weights or counterweights to improve stability Use extra care with grass catchers or other attachments These can change the stability of the machine Keepallmovementontheslopesslowandgradual Donot make sudden changes in speed or direction Avoidstartingorstoppingonaslope Iftireslosetraction disengagethebladesandproceedslowlystraightdownthe slope DO NOT Do not...

Page 3: ...e mowing area and under 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 Watch for holes ruts or bumps Uneven terrain could overturn the machine Tall grass can hide obstacles Use slow speed Choo...

Page 4: ...in your tractor properly Always observe the SAFETY RULES WARNING This tractor is equipped with an internal com bustion engine and should not be used on or near any unimproved forest covered brush covered or grass cov ered land unless the engine s exhaust system is equipped with a spark arrester meeting applicable local or state laws if any If a spark arrester is used it should be maintained in eff...

Page 5: ... 16 18 1 Hex Bolt 5 16 18 x 1 1 4 1 Hex Bolt 3 8 16 x 1 1 Lock washer 3 8 Steering Wheel Insert Steering Sleeve Steering Wheel 1 Knob 1 Washer 17 32 x 1 3 16 x 12 Gauge Seat 2 Keys Slope Sheet Steering Extension Shaft Steering Adapter 1 Oil Drain Tube ...

Page 6: ...nandlowershaftsandinstall 5 16 hex bolt and locknut Tighten securely Place tabs of steering boot over tab slots in dash and push down to secure INSTALL STEERING WHEEL Position front wheels of the tractor so they are pointing straightforward Removesteeringwheeladapterfromsteeringwheeland slide adapter onto steering shaft extension Positionsteeringwheelsocrossbarsarehorizontal left to right and slid...

Page 7: ...ce motion control lever in neutral N position Press lift lever plunger and raise attachment lift lever to its highest position Starttheengine Afterenginehasstarted movethrottle control to idle position Releaseparkingbrake Slowlymovethemotioncontrolleverforwardandslowly drive tractor off skid Applybraketostoptractor setparkingbrakeandplace motion control lever in neutral position Turn ignition key ...

Page 8: ...filled with fresh clean regular unleaded gasoline 3 Become familiar with all controls their location and function Operate them before you start the engine 3 Be sure brake system is in safe operating condition 3 Itisimportanttopurgethetransmissionbeforeoperating your tractor for the first time Follow proper starting and transmission purging instructions See TO START ENGINE and PURGETRANSMISSION int...

Page 9: ...ARD FAST SLOW ENGINE ON ENGINE OFF OIL PRESSURE LIGHTS ON FUEL CHOKE MOWER HEIGHT PARKING BRAKE LOCKED UNLOCKED REVERSE NEUTRAL HIGH LOW ATTACHMENT CLUTCH ENGAGED MOWER LIFT DANGER KEEP HANDS AND FEET AWAY FREE WHEEL Automatic Models only OVER TEMP LIGHT PARKING BRAKE IGNITION ATTACHMENT CLUTCH DISENGAGED P KEEP AREA CLEAR SLOPE HAZARDS 15 15 15 SEE SAFETY RULES SECTION ...

Page 10: ...and brak ing the tractor and starting the engine PARKINGBRAKE Locksclutch brakepedalintothebrake position FREEWHEEL CONTROL Disengages transmission for pushing or slowly towing the tractor with the engine off LIFT LEVER PLUNGER ATTACHMENT LIFT LEVER PARKING BRAKE IGNITION SWITCH THROTTLE CHOKE CONTROL LIGHT SWITCH POSITION MOTION CONTROL LEVER CLUTCH BRAKE PEDAL FIG 5 FREE WHEEL CONTROL HEIGHT ADJ...

Page 11: ... Failure to move throttle control to slow position and allowingenginetoidlebeforestoppingmaycauseengineto backfire Turn ignition key to OFF position and remove key Always remove key when leaving tractor to prevent unauthorizeduse Never use choke to stop engine PARKING BRAKE ENGAGED POSITION MOTION CONTROL LEVER THROTTLE CHOKE CONTROL LEVER IGNITION KEY DISENGAGED POSITION ATTACHMENT CLUTCH LEVER E...

Page 12: ...d cutting height See TO AD JUST MOWER CUTTING HEIGHT in the Operation section of this manual With mower in desired height of cut position gauge wheels should be assembled so they are slightly off the ground Install gauge wheel in appropriate hole with shoulderbolt 3 8washer and3 8 16locknutandtighten securely Repeatforoppositesideinstallinggaugewheelinsame adjustmenthole TO TRANSPORT See Figs 5 an...

Page 13: ...L The engine in your tractor has been shipped 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 chan...

Page 14: ...veways etc After one or two rounds mow in the opposite direction making left hand turns until finished See Fig 10 If grass is extremely tall it should be mowed twice to reduce load and possible fire hazard from dried clip pings Make first cut relatively high the second to the desiredheight Do not mow grass when it is wet Wet grass will plug mowerandleaveundesirableclumps Allowgrasstodry beforemowi...

Page 15: ...y 7 Tighten front axle pivot bolt to 35 ft lbs maximum Do not overtighten 1 12 3 2 5 5 6 7 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 ...

Page 16: ...ntered but are not Slide blade on to an unthreaded portion of the steel bolt or pin and hold the bolt or pin parallel with the ground If blade is balanced it should remain in a horizontal position If either end of the blade moves downward sharpen the heavy end until the blade is balanced TRACTOR Always observe safety rules when performing any mainte nance BRAKE OPERATION If tractor requires more t...

Page 17: ...sectionofthismanual Use gauge on oil fill cap dipstick for checking level Be sure dipstick cap is tightened securely for accurate reading Keep oil at FULL line on dipstick CLOSED AND LOCKED POSITION CAP DRAIN TUBE OIL DRAIN VALVE CLEAN AIR SCREEN Air screen must be kept free of dirt and chaff to prevent enginedamagefromoverheating Cleanwithawirebrushor compressedairtoremovedirtandstubborndriedgumf...

Page 18: ...azard and or damage SPARK PLUGS Replace spark plugs at the beginning of each mowing season or after every 100 hours of operation whichever occurs first Spark plug type and gap setting are shown in PRODUCT SPECIFICATIONS section of this manual IN LINE FUEL FILTER See Fig 18 The fuel filter should be replaced once each season If fuel filter becomes clogged obstructing fuel flow to carburetor replace...

Page 19: ...WER See Fig 19 Raise attachment lift lever to its highest position Slide mower under tractor with deflector shield to right side of tractor Lower lift lever to its lowest position Install mower in reverse order of removal instructions SUSPENSION ARMS RETAINER SPRINGS BOTH SIDES RETAINER SPRING ANTI SWAY BAR FRONT LINK COLLAR ENGINE PULLEY CLUTCH SPRING SMALL RETAINER SPRING SQUARE HOLE HOUSING GUI...

Page 20: ...fore making any necessary adjustments check that both front links are equal in length If links are not equal in length adjust one link to same length as other link Tolowerfrontofmowerloosennut E onbothfrontlinks an equal number of turns Whendistance D is1 8 to1 2 loweratfrontthanrear tighten nuts F against trunnion on both front links To raise front of mower loosen nut F from trunnion on both fron...

Page 21: ...rds from transmission input pulley and over cooling fan blades Pull belt toward front of tractor and remove downward from around engine pulley Install new belt by reversing above procedure FIG 26 ENGINE PULLEY CLUTCHING IDLER STATIONARY IDLER TRANSMISSION INPUT PULLEY TRANSAXLE MOTION CONTROL LEVER NEUTRAL ADJUSTMENT See Fig 27 The motion control lever has been preset at the factory and adjustment...

Page 22: ...NT BOLT FIG 27 NEUTRAL LOCK GATE MOTION CONTROL LEVER REPLACING BATTERY See Figs 30 and 31 CAUTION Do not short battery termi nals by allowing a wrench or any other object to contact both terminals at the same time Before connecting battery remove metal bracelets wristwatch bands rings etc Positive terminal must be connected firsttopreventsparkingfromaccidental grounding Lift seat pan to raised po...

Page 23: ... ENGINE SPEED OVERSPEEDING THE ENGINE ABOVE THE FACTORY HIGH SPEED SETTING CAN BE DANGEROUS IF YOU THINK THE ENGINE GOVERNED HIGH SPEED NEEDS ADJUSTING CONTACT YOUR NEAREST AUTHORIZED SERVICE CENTER DEPARTMENT WHICH HAS PROPER EQUIPMENT AND EXPERIENCE TO MAKE ANY NECESSARY ADJUSTMENTS ENGINE TO ADJUST THROTTLE CONTROL CABLE See Fig 33 The throttle control has been preset at the factory and adjustm...

Page 24: ...NG IN ESSENTIAL 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 ETHANOL OR METHANOL CAN ATTRACT MOISTURE WHICH LEADS TO SEPARATION AND FORMATION OF ACIDS DURING 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 ...

Page 25: ...heck 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 or starter 4 Ch...

Page 26: ...rpen 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 lea...

Page 27: ...OUR TRACTOR IS EQUIPPED WITH A SPECIAL ALTERNATOR SYSTEM THE LIGHTS ARE NOT CONNECTED TO THE BATTERY BUT HAVE THEIR OWN ELECTRICAL SOURCE BECAUSE OF THIS THE BRIGHTNESS OF THE LIGHTS WILL CHANGE WITH ENGINE SPEED AT IDLE THE LIGHTS WILL DIM AS THE ENGINE IS SPEEDED UP THE LIGHTS WILL BECOME THEIR BRIGHTEST WIRING INSULATED CLIPS NOTE IF WIRING INSULATED CLIPS WERE REMOVED FOR SERVICING OF UNIT THE...

Page 28: ...28 REPAIR PARTS TRACTOR MODEL NO LT15A JNA15H42A ELECTRICAL 28 29 26 24 42 43 27 27 25 41 27 27 40 33 30 8 2 1 27 52 16 22 21 16 48 ...

Page 29: ...4780 Cable Battery 6 Ga 11 red 25 532146147 Cable Battery 6 Ga 44 red w 16 wire 26 532175158 Fuse 27 873510400 Nut Keps Hex 1 4 20 Unc 28 532124773 Cable Ground 6 Ga 12 black 29 532121305 Switch Plunger Nc Gray 30 532175566 Switch Ign 33 532140401 Key Ign Generic 40 532170217 Harness Ign 41 871110408 Bolt Blk Fin Hex 1 4 20 x 1 2 42 532131563 CoverTerminalRed 43 532175141 Solenoid 48 532140844 Ada...

Page 30: ...NO LT15A JNA15H42A CHASSIS AND ENCLOSURES 74 60 30 17 29 28 12 207 20 207 23 3 31 1 3 2 9 208 5 5 207 144 25 26 26 10 26 144 25 26 60 3 3 3 142 3 3 3 142 58 208 13 208 11 64 208 143 60 145 51 57 53 52 54 55 37 37 18 14 38 14 206 212 ...

Page 31: ...olt Rdhd Sht Sqnk 3 8 16 x 3 4 37 817490508 Screw Thdrol 6 16 18 x 1 2 TYT 38 532175710 Bracket Asm Pivot Mower Rear 51 873800400 Nut Lock w Insert 1 4 20 Unc 52 819091416 Washer 9 32 x 7 8 x 16 Ga 53 532144697 Bracket Grille Lh 54 532161464 Screw Hex Wsh 8 18 x 7 8 55 532144696 Bracket Grille Rh 57 874780412 Bolt Hex 1 4 20 x 3 4 58 532150127 Air Duct Engine P L 60 872140606 Bolt RDHD SQNK 3 8 16...

Page 32: ... 61 41 42 40 53 35 55 36 42 62 35 36 22 39 34 16 1 77 77 30 52 56 64 65 212 63 116 70 57 96 26 25 19 24 26 26 76 78 75 74 27 26 15 37 51 89 90 27 51 48 151 202 49 47 50 120 81 156 166 165 82 168 163 14 164 21 8 10 83 159 161 198 158 162 169 150 84 16 199 16 61 71 200 73 16 61 197 95 ...

Page 33: ...lt Ground Drive 59 532169691 Keeper CenterSpan 61 817060612 Screw 3 8 16 x 3 4 62 532124872 Cover Pedal 63 532175410 Pulley Engine 64 871170764 Bolt Hex 7 16 20 x 4 65 810040700 Washer Lock Hvy HLCL Spr 7 16 66 532154778 Keeper Belt Engine 70 532134683 Guide Belt Mwr Dr Rh 71 532169183 Strap Torque Lh 73 532169182 StrapTorqueRh 74 532137057 Spacer Axle 75 532121749 Washer 25 32 x 1 1 4 x 16 Ga 76 ...

Page 34: ...OR MODEL NO LT15A JNA15H42A STEERING ASSEMBLY 44 51 54 5 9 5 7 7 9 4 3 32 43 6 43 8 10 40 11 8 6 9 46 46 8 6 9 2 47 47 26 30 28 1 41 42 37 36 37 38 63 11 39 68 67 67 67 13 65 85 85 68 15 15 15 29 29 82 88 71 29 17 29 43 91 ...

Page 35: ...ter 1 8 x 3 4 32 532130465 Rod Tie 36 532155099 Bushing Strg 37 532152927 Screw TT 32 5 x 5 x 3 8 Flange 38 532172093 CapWheelSteer 39 819132411 Washer 13 32 x 1 1 20 x 11 Ga 40 532124701 Nut Lock Center 3 8 24 Unf 41 532159945 Adaptor Wheel Strg 42 532169633 Boot Dash Steering 43 532121749 Washer 25 32 X 1 1 4 X 16 Ga 44 532153720 ExtensionSteeringNon adjust 46 532121232 Cap Spindle Fr Top Blk 47...

Page 36: ...246 Bracket Mounting Switch 13 532121248 Bushing Snap Blk Nyl 50 Id 14 872050412 Bolt Rdhd Sqnk 1 4 20x1 1 2 15 532134300 Spacer Split 28x 96 Yel Zinc 16 532121250 Spring Cprsn 1 27 Blk Pnt 17 532123976 Nut Lock 1 4 Lge Flg Gr 5 Zinc 18 532124238 Cap Spring Seat 1 75 x 1 0 21 532171852 Bolt Shoulder 5 16 18 Unc 22 873800500 Nut Hex Lock W Ins 5 16 18 24 819171912 Washer 17 32 X 1 3 16 X 12 Ga 25 5...

Page 37: ...039 Cap Axle Blk 1 50 X 1 00 532144334 Sealant Tire 10 oz Tube 2 8 14 5 1 532157032 Decal Oper Step Thru E F 2 532145005 Decal Battery 3 532170704 DecalHoodRH 4 532170705 Decal Hood LH 5 532170846 Decal HP Engine 6 532162927 Decal Hood Sd Pnl 7 532170565 DecalWheelSteering 8 532170563 DecalWarning KEY PART NO NO DESCRIPTION 1 6 2 1 5 8 4 10 3 9 11 7 WHEELS TIRES 9 532141761 DecalFender 10 53215714...

Page 38: ... Tube Drain Oil Easy 16 811050600 Washer Lock Ext Tooth 3 8 23 532169837 ShieldBRN DBRGuard 29 532137180 Kit Spark Arrestor Flat Scrn 31 532174642 Tank Fuel 32 532140527 Cap Asm Fuel W sym Vented KEY PART NO NO DESCRIPTION 33 532123487 Clamp Hose Black 37 532137040 LineFuel 38 532148315 Plug Drain Oil Easy 40 532124028 Bushing Snap Nyl Black Fuel Line 44 817670412 Screw Hex Wsh Thdrol 1 4 20 x 3 4...

Page 39: ... 17 532130171 Trunnion Blk Zinc 18 873800800 Nut Lock w Wsh 1 2 13unc 19 532139868 Arm Suspension Rear 20 532163552 RetainerSpring 23 532110807 Nut Special KEY PART NO NO DESCRIPTION NOTE All component dimensions given in U S inches 1 inch 25 4 mm KEY PART NO NO DESCRIPTION 24 819131016 Washer 13 32 X 5 8 X 16 Ga 25 532124874 Spring2 1 8 26 532169484 RetainerClip 27 532126971 Rod Adj Lift Zinc 7 4...

Page 40: ... 150 45 144 147 147 142 149 142 49 50 51 54 52 53 55 56 34 1 46 44 21 22 24 25 26 27 2 28 29 23 21 21 21 18 18 20 2 48 59 19 4 3 129 92 131 130 92 5 6 21 40 143 36 40 37 40 159 90 9091 92 92 93 94 93 95 113 117 116 118 119 114 115 112 121 114 117 119 116 115 111 118 121 113 152 151 153 154 157 158 67 153 156 155 ...

Page 41: ...1 MowerDeck Complete Standard Deck OrderSeparatelyNoseroller andGaugeWheelComponents 1 532165892 Mower Deck Assembly 42 2 872140506 Bolt 3 532138017 Bracket Assembly Sway Bar Front 4 532165460 Bracket Sway Bar 38 42 Deck 5 532124670 RetainerSpring 6 532130832 Arm Suspension Rear 8 532850857 Bolt Hex 3 8 24 x 1 25 Gr 8 9 810030600 Washer Lock 10 532140296 Washer Hardened 11 532138498 Blade Mower 42...

Page 42: ...42 SERVICE NOTES ...

Page 43: ...IDE ONLY RIDE UP AND DOWN HILL NOT ACROSS HILL SUGGESTED GUIDE FOR SIGHTING SLOPES FOR SAFE OPERATION Operate your Tractor up and down the face of slopes not greater than 15 never across the face Make turns gradu ally to prevent tipping or loss of control Exercise extreme caution when changing direction on slopes ...

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