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JOHN DEERE WORLDWIDE COMMERCIAL & CONSUMER EQUIPMENT DIVISION GX23171 K8 John Deere Tractors 100 Series OMGX23171 K8 OMGX23171 K8 OPERATOR’S MANUAL North American Version Litho in U.S.A.
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INTRODUCTION c WARNING: The Engine Exhaust from this product contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm. Introduction Thank You for Purchasing a John Deere Product We appreciate having you as a customer and wish you many years of safe and satisfied use of your machine. California Proposition 65 Warning Using Your Operator’s Manual This manual is an important part of your machine and should remain with the machine when you sell it.
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PRODUCT IDENTIFICATION Engine Serial Number Location Product Identification Record Identification Numbers Lawn Tractors LA105, LA115, LA125, LA135, LA145, LA155, LA165, LA175 PIN (200001-) If you need to contact an Authorized Service Center for information on servicing, always provide the product model and identification numbers. You will need to locate the product identification number (PIN) for the machine and engine serial number. Record the information in the spaces provided below.
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SAFETY LABELS F A E G B C D MX41156 Picture Note: Use label number listed in table below to locate complete text of safety label message following this illustration. A- WARNING GX22477 B- DANGER M89504 WARNING, and CAUTION are used with this safety-alert symbol. DANGER identifies the most serious hazards. The operator’s manual also explains any potential safety hazards whenever necessary in special safety messages that are identified with the word, CAUTION, and the safety-alert symbol.
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SAFETY LABELS Warning AVOID SERIOUS INJURY OR DEATH • Drive up and down slopes, not across. • Avoid sudden turns. • If machine stops going uphill, stop blades and back down slowly. • Keep safety devices (guards, shields, and switches) in place and working. • Remove objects that could be thrown by blades. MX4878 Picture Note: This label appears on Briggs and Stratton engines only. • Read and follow Operating Instructions before running engine. • Read operator’s manual.
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SAFETY LABELS Warning M159705 Canadian Electromagnetic Compatibility (EMC) Compliance This spark ignition system complies with Canadian ICES-002. M159705 Picture Note: This label is required and installed on machines sold in California. This label may also be installed on machines sold in other locations. Operation of This Equipment May Create Sparks that Can Start Fires Around Dry Vegetation. A Spark Arrestor May be Required.
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SAFETY and the mower assembly are not worn and damaged. Replace worn and damaged blades and bolts in sets to preserve balance. Safety Operating Safely • Make sure spark plug, muffler, fuel cap and air cleaner are in place before starting the engine. This cutting machine is capable of amputating hands and feet and throwing objects. Failure to observe the following safety instructions could result in serious injury or death.
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SAFETY • Stay alert to the presence of children. Never assume that children will remain where you last saw them. Turn the machine off if a child enters the work area. 6. Remove the key. 7. Wait for engine and all moving parts to stop before you leave the operator’s seat. • Use extreme care when approaching blind corners, shrubs, trees, or other objects that may block your view of a child. 8. Close fuel shut-off valve, if your machine is equipped. 9.
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SAFETY • On multi-bladed machines, take care as rotating one blade can cause other blades to rotate. • Use only approved hitches. Tow only with a machine that has a hitch designed for towing. Do not attach towed equipment except at the approved hitch point. • Follow the manufacturer’s recommendations for weight limits for towed equipment and towing on slopes. • If you cannot back up a slope with a towed load, the slope is too steep to operate on with the towed load. Reduce the towed load or do not operate.
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ASSEMBLY • Always shut off fuel when storing or transporting machine, if the machine has a fuel shutoff. to allow you to stand to one side and NOT in front of or over the tire assembly. • Do not store machine near an open flame or source of ignition, such as a water heater or furnace. • Check tires for low pressure, cuts, bubbles, damaged rims or missing lug bolts and nuts. • Check fuel lines, tank, cap, and fittings frequently for cracks or leaks. Replace if necessary.
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ASSEMBLY 3. Engage attachment engagement switch (B) and allow mower to run for 10 seconds. 4. Disengage attachment engagement switch and wait 10 seconds. 5. Repeat steps 3 and 4 for 12-15 cycles. B NOTE: Clutch is now properly burnished. A MX7686a 4. Connect positive (+) battery cable (A) to battery. 5. Connect negative (–) battery cable (B). 6. Apply general purpose grease or silicone spray to terminal to help prevent corrosion. 7. Slide red cover over positive battery cable.
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OPERATING CONTROLS Operating Controls Operator Station Controls (LA105) E G C A B H F D J I K MX27230 A Brake/Clutch Pedal B Park Brake Lock Lever C Throttle/Choke Lever D Reverse Implement Option (RIO) Switch E Service Reminder/Hour Meter F Key Switch G Attachment Engagement Lever H Deflector Shield I Transmission Shift Lever J Fuel Level Window K Attachment Lift Lever Operating Controls - 11
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OPERATING CONTROLS Operator Station Controls (LA115, LA125, LA135) G H C I A J B K F D E L M MX27231 A Brake Pedal B Park Brake Lock Lever C Throttle/Choke Lever D Reverse Implement Option (RIO) Switch E Key Switch F Cruise Control Lever (LA125 and LA135) G Service Reminder/Hour Meter H Attachment Engagement Lever I Forward Travel Pedal J Reverse Travel Pedal K Deflector Shield L Fuel Level Window M Attachment Lift Lever Operating Controls - 12
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OPERATING CONTROLS Operator Station Controls (LA145, LA155, LA165, LA175) A H C I G J B K F D E L M MX27232 A Brake Pedal B Park Brake Lock Lever C Throttle/Choke Lever D Reverse Implement Option (RIO) Switch E Key Switch F Cruise Control Lever G Attachment Engagement Switch H Service Reminder/Hour Meter I Forward Travel Pedal J Reverse Travel Pedal K Deflector Shield L Fuel Level Window M Attachment Lift Lever Operating Controls - 13
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OPERATING Operating Daily Operating Checklist ❏ ❏ ❏ ❏ ❏ Approximate Cutting Height 4 (Transport) 100 mm (4 in.) 1. Put attachment lift lever into the slot adjacent to desired cutting height. Test safety systems. 2. Adjust mower deck wheels. Check tire pressure. Transporting or Getting On and Off Machine Check fuel level. • Pull attachment lift lever all the way back to transport position or 100 mm (4 in.) cutting height. Check engine oil level.
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OPERATING MX4896 three wooden blocks. b.Turn left blade (C) as shown. Hold drive belt and turn right blade (D) as shown. Take measurement for both blades. The difference between blade measurements must not be more than 3 mm (1/8 in.). c.Adjust mower deck level, if necessary. 5. Measure mower level (front-to-rear). E B C MX16561 • If the rear of the mower deck is not touching the rear blocks, or is sitting heavily on the blocks, adjust the rear lift links by turning the leveling nut (B) on each lift link.
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OPERATING 5. Measure the front edge of the mower deck directly below the front draft arm hanger at point (A). Testing Safety Systems • If necessary, turn the front draft arm nut (C) counterclockwise so the front edge of the mower deck is 3-6 mm (1/8-1/4 in.) lower than the rear corners of the mower deck. Adjusting Mower Deck Wheels IMPORTANT: Avoid damage! The mower deck can be damaged if mower wheels are adjusted wrong: • Wheels must not ride on ground supporting mower weight.
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OPERATING Testing Attachment Engagement Switch or Lever 3. Engage attachment engagement switch or lever to start attachment. c c If you believe that your blades may not be stopping in that period of time, take your machine to your authorized dealer where they can safely check and service your machine. Before backing up, carefully check the area around the machine. CAUTION: Avoid injury! The mower blades should stop in approximately five seconds when the mower or PTO is disengaged. 1.
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OPERATING • Hour meter cannot be reset. A Using Key Switch and Headlights B C A MX16555 D • If engine is cold: Move throttle/choke lever (A) up to the choke position. M94336a A- STOP Position • If engine is warm: Move throttle/choke lever (A) to the half-speed position. IMPORTANT: Avoid damage! Starter may be damaged if starter is operated for more than 20 seconds at a time: B- Headlights On Position C- Run Position • Wait two minutes before trying again if engine does not start.
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OPERATING 2. Turn key to STOP position. Engine will stop and headlights will turn off. 3. Remove key. Using Travel Controls on Automatic Transmission c 4. Lock the park brake. CAUTION: Avoid injury! Children or bystanders may be injured by runover and rotating blades. Before traveling forward or rearward: Using Travel Controls on Gear Transmission c • Carefully check the area around the machine. CAUTION: Avoid injury! Children or bystanders may be injured by runover and rotating blades.
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OPERATING • On models with mechanical attachment engagement lever: Push lever forward. NOTE: The mower and engine will stop as the reverse foot pedal is pressed for Automatic Transmission or when the gear shift lever is moved to the R (reverse) position for Gear Transmission with mower engaged. 5. Disengage mower blades before moving in reverse or stopping engine. • Machines with mechanical attachment engagement lever: Pull lever back.
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OPERATING Unplugging Mower, Bagger, or Material Collection System 3. Hook mulch cover to mower deck: • On 122 cm (48 in.) deck, wheel bracket grooves (F). c CAUTION: Avoid injury! Do not attempt to unplug attachment with machine running. • Rotating blades are dangerous. Shut off the engine and remove the key before getting off the seat to inspect the machine and attachment. • Thrown objects can cause serious injury. Make sure all machine parts are stopped before raising hopper top or removing chutes.
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OPERATING 7. Fasten machine at the axle or frame to trailer with heavy-duty straps, chains, or cables. Both front and rear straps must be directed down and outward from machine. 8. Secure hood to prevent from lifting while driving. Using Weights c CAUTION: Avoid injury! The machine may become unstable when operating on slopes and/or with some attachments. Use weights to improve stability when operating on slopes or using attachments. A Remove weights when not required.
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SERVICE INTERVALS Using the Power Port (If Equipped) • Travel at slow speed when you mow thick, tall grass, make sharp turns or trim around objects. c • Travel at moderate speed when you mow thin grass. CAUTION: Avoid injury! Safe operation requires your full attention. Do not wear radio or music headphones while operating machine. An electric power port (A) can be used for accessories. See your authorized dealer. • Use a different mowing pattern each time you mow.
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SERVICE LUBRICATION Lubricating Front Axle • Lubricate front axle pivot. • Lubricate front axle wheel spindles and bushings. Every 25 Hours • Lubricate mower spindles. C • Lubricate mower pivot points. • Lubricate front axle pivot. A • Lubricate front axle wheel spindles and bushings. Every 50 Hours B • Change engine oil and replace filter. (Service more frequently under dusty conditions.) • Clean/replace air filter precleaner. (Service more frequently under dusty conditions.
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SERVICE ENGINE 122 cm (48 in.) and 137 cm (54 in.) Mower Decks: SAE 10W-40 SAE 10W-30 SAE 5W-30 A B -40 -20 -40 -30 0 -20 20 -10 32 F 0 60 40 C 20 10 100 80 30 40 122 50 The following John Deere oils are preferred: MX25900 Picture Note: 122 cm (48 in.) mower deck used for illustration.
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SERVICE ENGINE 6. Remove dipstick. b.Place a drain pan or funnel under filter tray. 7. Check oil level on dipstick. Oil must be between ADD and FULL marks. c.Remove old filter and filter gasket and dispose of properly. Wipe up any spilled oil. 8. If oil level is low, add oil to bring oil level no higher than FULL mark on dipstick. Do not overfill. 9. Install and tighten dipstick. Lower hood. d.Put a light coat of fresh, clean oil on the new filter gasket. e.
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SERVICE ENGINE Checking and Cleaning Air Cleaner Elements (LA105 and LA115) 1. Park machine safely. (See Parking Safely in the SAFETY section.) 8. Clean air cleaner base very carefully, preventing any dirt from falling into carburetor. 9. Install foam precleaner on paper filter element. 10. Install new paper filter element. 2. Let engine cool. 11. Install air cleaner cover and push latch down to lock. 3. Lift hood. 12. Lower hood. 4. Clean dirt and debris from the air cleaner cover.
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SERVICE ENGINE IMPORTANT: Avoid damage! Dirt and debris can enter the engine through a damaged filter element: IMPORTANT: Avoid damage! Dirt and debris can enter the engine through a damaged filter element: • Do not wash paper element. • Do not wash paper element. • Do not attempt to clean paper element by tapping against another object. • Do not attempt to clean paper element by tapping against another object. • Do not use pressurized air to clean element.
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SERVICE ENGINE 12. Lower hood. Checking and Cleaning Emission Filter (If Equipped) 1. Park machine safely. (See Parking Safely in the SAFETY section.) A B B A MX25903 5. Loosen two knobs (A) and remove cover (B). IMPORTANT: Avoid damage! Dirt and debris can enter the engine through a damaged filter element: MX39589 2. Inspect filter (A) for dirt and damage, wash or replace if required. • Do not wash paper element. • Do not attempt to clean paper element by tapping against another object. a.
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SERVICE TRANSMISSION • Cracked porcelain. • Pitted or damaged electrodes. • Other wear or damage. A 8. Replace spark plug as necessary. B MX13768b B 6. Slide hose clamps (A) away from fuel filter (B) using a pliers. 7. Disconnect hoses from filter, and raise fuel lines vertically to avoid fuel drainage. M85200 9. Check plug gap (B) with a wire feeler gauge. To change gap, move the outer electrode. • Gap must be 0.76 mm (0.030 in.).
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SERVICE MOWER a.Remove spring locking pin (B), pull and hold mower engagement drive cable out, lift up and remove from bracket (C). c CAUTION: Avoid injury! Component is spring-assisted and under tension. Injury can occur if spring-assisted component is released suddenly. b.Remove cable spring (D) from idler sheave bracket (E). c CAUTION: Avoid injury! Mower lift arms can pinch fingers. Lift arms are spring loaded and can snap back when deck is removed.
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SERVICE MOWER 3. Slide mower under machine. c 4. Put wood blocks under each side of mower deck. CAUTION: Avoid injury! Component is spring-assisted and under tension. Injury can occur if spring-assisted component is released suddenly. 5. Put attachment lift lever in lowest position. C G C H B A MX16568 6. Fasten rear draft arm (A) and adjustable lift link (B), on each side, with washers and spring locking pins (C). MX25905 Picture Note: 122 cm (48 in.) mower deck used for photo purposes. 8.
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SERVICE MOWER 7. Tighten sheaves to 47 N•m (35 lb-ft). 8. Install belt shields. 9. Install mower deck. K J 10. Adjust mower belt tension and spindle brakes, if necessary. Replacing Mower Drive Belt (122 cm (48 in.) and 137 cm (54 in.) Mower Decks) 1. Park machine safely. (See Parking Safely in SAFETY section.) 2. Remove mower deck. L B N C M MX7681a Picture Note: 107 cm (42 in.) mower deck only. a.Route cable under mower belt and brake rod and attach cable spring (J) to idler sheave bracket (K). b.
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SERVICE MOWER B B C A MX7681a 3. Loosen nuts (A) and move cable bracket (B) away from the center of mower deck to tighten belt tension. Move bracket until almost all slack is out of cable but cable is not too tight. Tighten nuts. Adjusting Spindle Brakes (107 cm (42 in.) Mower Deck) MX25909 4. Measure distance from spindle brake bracket (B) to nut (C) on end of brake rod. • Bracket to nut distance should be: 2 - 3 mm (0.08 - 0.12 in). 5.
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SERVICE ELECTRICAL Servicing Mower Blades c A CAUTION: Avoid injury! Rotating blades are dangerous. Before adjusting or servicing mower: • Disconnect spark plug wire(s) or battery negative (-) cable to prevent engine from starting accidentally. • Always wear gloves when handling mower blades or working near blades. Removing Mower Blades B 1. Park machine safely. (See Parking Safely in SAFETY section.) 2. Raise mower deck to gain access to mower blades. If necessary, remove mower deck. 3.
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SERVICE ELECTRICAL Service the Battery Safely Cleaning Battery and Terminals 1. Park machine safely. (See Parking Safely in the SAFETY section.) 2. Disconnect and remove battery. 3. Wash battery with solution of four tablespoons of baking soda to one gallon of water. Be careful not to get the soda solution into the cells. 4. Rinse the battery with plain water and dry. 5. Clean terminals and battery cable ends with wire brush until bright. 6. Install battery. 7.
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SERVICE MISCELLANEOUS 5. Start the engine of the disabled machine and run machine for several minutes. reformulated fuel are acceptable. Do not use fuel or additives containing methanol as engine damage can occur. 6. Carefully disconnect the booster cables in the exact reverse order: negative cable first and then the positive cable. Always use fresh, clean fuel that is purchased in a quantity that can be used within approximately 30 days, or add fuel stabilizer. Replacing Headlight Bulb 1.
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SERVICE MISCELLANEOUS Cleaning Plastic Surfaces 5. Fill fuel tank only to bottom of filler neck. 6. Install fuel tank cap. IMPORTANT: Avoid damage! Improper care of machine plastic surfaces can damage that surface: Checking Tire Pressure • Do not wipe plastic surfaces when they are dry. Dry wiping will result in minor surface scratches. 1. Check tires for damage. 2. Check tire pressure with an accurate gauge. 3. Service tires safely. (See Tire Safety in the SAFETY section.) 4.
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SERVICE MISCELLANEOUS c CAUTION: Avoid injury! The machine can fall or slip from an unsafe lifting device or supports. • Use a safe lifting device rated for the load to be lifted. c CAUTION: Avoid injury! Components are installed under spring tension. Wear eye protection and use proper tools when installing and removing components with spring tension. • Lower machine onto jack stands or other stable supports and block wheels before servicing.
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TROUBLESHOOTING c CAUTION: Avoid injury! The machine can fall or slip from an unsafe lifting device or supports. c CAUTION: Avoid injury! Explosive separation of tire and rim parts is possible when they are serviced incorrectly: • Use a safe lifting device rated for the load to be lifted. • Lower machine onto jack stands or other stable supports and block wheels before servicing.
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TROUBLESHOOTING IF CHECK IF CHECK Engine Runs Unevenly Cooling fins plugged. Engine Stops When Gear Shift Lever Is Moved To The R (REVERSE) Position and Attachment Is Engaged (Gear) Normal condition. (See Using Reverse Implement Option in the OPERATING section.) Loose electrical connections. Choke or throttle cable sticking. Fuel line or fuel filter plugged. Stale or dirty fuel. Improper fuel. Air cleaner element plugged. Engine Misses Under Load Engine Vapor Locks Electrical Faulty spark plug.
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STORAGE IF CHECK Patches Of Grass Uncut Travel speed too fast. Storage Storing Safety Engine rpm not at wide open throttle. c Mower deck needs cleaning. Belt Slipping CAUTION: Avoid injury! Fuel vapors are explosive and flammable. Engine exhaust fumes contain carbon monoxide and can cause serious illness or death: Debris in sheaves. Worn belt. • Run the engine only long enough to move the machine to or from storage. Belt tension is incorrect.
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SPECIFICATIONS carburetor on gas engine or fuel injectors on diesel engine. Intake Valve Clearance . . . . . . . . . 0.076 - 0.127 mm (0.003 - 0.005 in.) Exhaust Valve Clearance . . . . . . . . . 0.13 - 0.18 mm (0.005 - 0.007 in.) Engine: Engine storage procedure should be used when vehicle is not to be used for longer than 60 days. Spark Plug-Gap . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.76 mm (0.030 in.) Spark Plug-Torque . . . . . . . . . . . . . . . . . . . . . . . . . . .
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SPECIFICATIONS Transaxle Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Tuff Torq™ T40 Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . Cartridge w/ Foam Precleaner Travel Speed - Forward . . . . . . . . . . . . . . . . 0 - 8.9 km/h (0 - 5.5 mph) Transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Hydrostatic Travel Speed - Reverse . . . . . . . . . . . . . . . . 0 - 5.2 km/h (0 - 3.2 mph) Transaxle Model . . . . . . . . . . . . . . . .
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SPECIFICATIONS Weight: LA115, LA125 . . . . . . . . . . . . . . . . . . . . . . . . . 204 kg (450 lb) Weight: LA135 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 213 kg (470 lb) Weight: LA145, LA155, LA165 . . . . . . . . . . . . . . . . . . . . 238 kg (525 lb) Weight: LA175 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 262 kg (579 lb) Tires Models LA105, LA115, LA125 Size (Front). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 x 6.
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WARRANTY applicable U.S. Environmental Protection Agency regulations under 40 CFR Part 90: and, Warranty Product Warranty Product warranty is provided as part of John Deere’s support program for customers who operate and maintain their equipment as described in this manual. Engine related warranties stated in this manual refer only to emissionsrelated parts and components of your engine.
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INDEX • Catalyst muffler. you specific legal rights, and you may also have some rights which vary from state to state. Miscellaneous Items Used in Above Systems NO DEALER WARRANTY • Vacuum, and temperature sensitive valves and switches. The selling dealer makes no warranty of it’s own and the dealer has no authority to make any representation or promise on behalf of John Deere, or to modify the terms or limitations of this warranty in any way. • Exhaust manifold. • Electronic controls.
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INDEX Customer Service .................................................................................. 48 Cutting Height, Adjusting ....................................................................... 14 D Daily Operating Checklist ...................................................................... 14 Deck Level, Adjust Mower ..................................................................... 10 Deck Level, Checking Mower ................................................................
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GETTING QUALITY SERVICE Transmission, Checking (See your John Deere dealer) ........................ 30 Transporting Machine on Trailer ............................................................ 22 Travel Controls on Automatic Transmission, Using ............................... 19 Troubleshooting Chart ........................................................................... 40 U Unplugging Mower, Bagger, Material Collection System ....................... 21 Using ......................................
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GETTING QUALITY SERVICE Filters: • Oil Filter (all models) • GY20577 • Fuel Filter (all models) • GY20709 • Air Filter - LA105, LA115 • GY20573 • Air Filter - LA125 • GY21055 • Air Filter - LA135, LA145 • GY21056 • Air Filter - LA155, LA165, LA175 • GY21057 Spark Plug M78543 Battery TY25878 Home Maintenance Kit (HMK) • LA105, LA115 • LG253 • LA125 • LG262 • LA135, LA145 • LG263 • LA155, LA165, LA175 • LG264 Home Maintenance Kit Includes: • (1) Fuel Filter • (1) Oil Filter • (1) Air C
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SERVICE RECORD Service Record Record Service Dates Oil Change Oil Filter Change (If Equipped) Lubricate Machine Air Cleaner Element Check/ Clean Service Record - 51 Fuel Filter Change