Exmark Radius X Series Operator's Manual
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Exmark Radius X Series Operator's Manual

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RADIUS
®
For Serial Nos.
408,644,346 & Higher
Part No. 4505-549 Rev. A

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David Wetzstein
March 1, 2025

how do you lower the blade deck?

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1 comments:
Mr. Anderson
March 1, 2025

To lower the blade deck on an Exmark Radius X Series mower, use the foot-activated lever to adjust the cutting height. The height can be adjusted from 1.5 inches (3.8 cm) to 5 inches (12.7 cm) in 1/4 inch (6.4 mm) increments.

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Summary of Contents for Exmark Radius X Series

  • Page 1 RADIUS ® For Serial Nos. 408,644,346 & Higher Part No. 4505-549 Rev. A...
  • Page 2 To acquire a spark arrester for your unit, see your Engine Service Dealer. For all models that do not have Exmark engines, please refer to the engine manufacturer's information included with the machine. For models with Exmark engines, refer to this manual for information.

  • Page 3: Introduction

    All Exmark parts are thoroughly tested and inspected before leaving the factory, however, attention is required on your part if you are to obtain the fullest measure of satisfaction and performance.

  • Page 4: Table Of Contents

    Engine Safety ..........38 Servicing a Kawasaki ® Engine ......38 ® Servicing a Kohler Engine ......44 Servicing an Exmark Engine......48 Check Battery Charge ........55 Check Mower Blades ........57 Check Safety Interlock System ......59 Check Rollover Protections Systems (Roll Bar) Knobs..........62 Check Seat Belt..........62 Check for Loose Hardware ......62...

  • Page 5: Safety

    Safety Safety General Safety This machine is capable of amputating hands and This machine has been designed in conformance feet and of throwing objects. Always follow all safety with the American National Standards Institute instructions to avoid serious personal injury or death. B71.4 for Commercial Turf Care Equipment–Safety •...

  • Page 6: Safety And Instructional Decals

    Exmark equipment dealer or labels. distributor or from Exmark Mfg. Co. Inc. • Replace all worn, damaged, or missing safety • Safety signs may be affixed by peeling off the signs.
  • Page 7 Safety decal112-9028 112-9028 1. Warning—stay away from moving parts; keep all guards and shields in place. decal109-6014a 109-6014 decal115-9625 115-9625 1. Parking 2. Parking brake—engaged brake—disengaged decal109-6035 109-6035 Three-Blade Side Discharge Units Only decal116-8283 116-8283 1. Warning—read the Operator's Manual for instructions on torquing the blade bolt/nut to 55-60 ft-lb (75-81 N-m).
  • Page 8 Safety decal126-4363 126-4363 1. Cutting/dismemberment hazard, fan and entanglement hazard, belt—Stop engine and remove key before adjusting, servicing or cleaning. decal116-8588 116-8588 1. Read the Operator’s manual. 2. Rotate the drive release knob to loosen, slide the knob, and tighten. 3.
  • Page 9 Safety decal126-6464 126-6464 decal131-1097 Side Discharge Units 131-1097 Exmark 708cc Engine Only 1. Thrown objects hazard - 3. Cutting/dismemberment keep bystanders away. of hand or foot - stay 1. Oil drain away from moving parts; keep all guards and shields in place.
  • Page 10 Safety decalhourmessagedisplay-116-5610 Message Display 1. Hour 4. Neutral 2. PTO 5. Operator presence switch 3. Parking brake 6. Battery decalmotioncntrlrh-126-6183 RH Motion Control 1. Machine speed 4. Neutral 2. Fast 5. Reverse 3. Slow decalptosymbols PTO Switch Symbols 1. PTO–disengage 2.
  • Page 11 Safety decal135-7816 135-7816 1. Throttle-fast 4. Choke-off 2. Throttle-slow 5. Optional light accessory 3. Choke-on 6. Optional 12V accessory...
  • Page 12 Safety decal126-8151 126-8151 1. Read the instructions before servicing or performing 4. Refer to the Operator's manual for grease instructions maintenance 2. Time interval 5. Check hydraulic oil level and refer to the Operator's manual or further instructions 3. Check oil level 6.

  • Page 13: Specifications

    • Polarity: Negative Ground • Engine Specifications: See your Engine Owner’s • Fuses: Manual All units: • Engine Oil Type: Exmark 4–Cycle Premium Engine Oil – 20 amp charging system fuse • RPM: (not used on Kohler engines) – X-Series: Full Speed: 3750 ±50 RPM (PTO –...
  • Page 14 Super Turf Tread Hydro Gear ZT2800 Size 23 x 9.50-12 23 x 10.50-12 ◊ Models with 60 inch deck: Ply Rating Hydro Gear ZT3100 Pressure 13 psi (90 kPa) 13 psi (90 kPa) • Hydraulic Oil Type: Exmark Premium Hydro Oil.
  • Page 15 Specifications – 44 inch Deck: 22.25 inches (56.5 cm) – (2 ea.) E-Series: – 48 inch Deck: 24.50 inches (62.2 cm) – (2 ea.) Drive – 48 inch Deck: 16.25 inches (41.3 cm) – (3 ea.) Pneumatic (Air filled) – 52 inch Deck: 18.00 inches (45.7 cm) – (3 ea.) Deck Size 48 &...

  • Page 16: Dimensions

    Specifications Dimensions Rear Discharge Units: 60 inch Deck Overall Width: Without Deck 51.4 inches X-Series—Side Discharge Units: (130.6 cm) With Deck 66.0 inches 48 inch 52 inch 60 inch (167.6 cm) Deck Deck Deck Without 47.4 inches 48.7 inches 52.1 inches Overall Length: Deck (120.4 cm)
  • Page 17 Specifications Tread Width: (Center to Center of Wheel Base: (Center of Caster Tire to Tires, Widthwise) Center of Drive Tire) X-Series—Side Discharge Units Side Discharge Units: 48 inch 52 inch 60 inch 44 inch Deck 48 inch Deck 48 inch Deck Deck Deck Deck...

  • Page 18: Torque Requirements

    Product Overview Torque Requirements Product Overview Bolt Location Torque X-Series: 130-160 ft-lb (176-217 N-m) Blade Drive Sheave Mounting Nut S- and E-Series: 75-85 ft-lb (102-115 N-m) Blade Drive Sheave Mounting Nut Blade Mounting 50-60 ft-lb (68-81 N-m) Bolt (lubricate with anti-seize) Anti-Scalp Roller 50-55 ft-lb (68-75 N-m)

  • Page 19: Operation

    Operation Operation Choke Control Located on right console (black lever) (see Figure 5). Note: Determine the left and right sides of the The choke is used to aid in starting a cold engine. machine from the normal operating position. Moving the choke lever forward will put the choke in the “ON”...
  • Page 20 Operation Push the lever forward and down to disengage the brake. The unit must be tied down and brake engaged when transporting. Ignition Switch Located on right console (see Figure 5). The ignition switch is used to start and stop the g012334 Figure 7 engine.
  • Page 21 Operation PTO Engagement Switch the machine has to be pushed by hand, the valves must be in the “released” position (see Figure 8). Located on right console (see Figure 5). Switch must be pulled out (up) to engage the blades. Switch is pushed in to disengage the blades.

  • Page 22: Before Operation

    • Never smoke when handling gasoline, and proper working condition. Replace worn or stay away from an open flame or where deteriorated parts with genuine Exmark parts gasoline fumes may be ignited by spark. when necessary. • Add fuel before starting the engine. Never...

  • Page 23: Operating Instructions

    Operation – When practical, remove gas-powered WARNING equipment from the truck or trailer and Operating engine parts, especially the muffler, refuel the equipment with its wheels on the become extremely hot. Severe burns can occur ground. If this is not possible, then refuel on contact and debris, such as leaves, grass, such equipment on a truck or trailer from a brush, etc.
  • Page 24 Operation • Park the machine on level ground. Stop engine, – Review and understand the slope instructions wait for all moving parts to stop, and remove key. in the manual and on the machine. – Before checking, cleaning or working on the –...
  • Page 25 Loss of traction to the drive Do not repair or alter them. wheels may result in sliding and a loss of braking • Only Exmark approved accessories or attachments and steering. The machine can slide even if the may be added to the ROPS.
  • Page 26 Operation Raise the Rollover Protection System (ROPS) Important: The roll bar is an integral and effective safety device. Keep the roll bar in the fully raised and locked position when operating the mower. Lower the roll bar temporarily only when absolutely necessary. The knob must be completely latched with the tabs interlocking as shown in Figure 11 to lock the roll bar in the raised, operate position.
  • Page 27 Operation attempts. Failure to follow these guidelines can burn out the starter motor. If the choke is in the “ON” position, gradually return choke to the “OFF” position as the engine warms up. Engaging the PTO DANGER The rotating blades under the mower deck are dangerous.
  • Page 28 Operation Move the motion control levers out to the neutral lock position. Engage the parking brake. Place the throttle midway between the “SLOW” and “FAST” positions. Disengage the PTO. Allow the engine to run for a minimum of 15 seconds, then turn the ignition switch to the “OFF”...
  • Page 29 Operation To turn right, release pressure on the RH motion control lever and the rear of the machine will move towards the rear and to the right. To turn left, release pressure on the LH motion control lever and the rear of the machine will move towards the rear and to the left.
  • Page 30 Operation See the decal on the top of the deck lift plate for • Side Discharge Units: cut heights. Be sure the roller bolts are installed with Push the foot lever forward, pull up on the the spring disc washer between the head transport lock knob and let the deck lower of the bolt and the mounting bracket (see down to the predetermined cut height by slowly...

  • Page 31: After Operation

    Operation • Rear Discharge Units: Torque the 3/8 nyloc nut to 30-35 ft-lb (41-47 N-m) (see Figure 19 ). g035120 Figure 20 1. Bolt 3. Nut 2. Bumper g035123 Figure 19 3. Wheel spacer 1. 3/8 inch nyloc-torque to Move each bumper to the desired position and 30-35 ft-lb (41-47 N-m) secure them with the bolts and nuts.
  • Page 32 Operation Knowing this information could help you, your procedure. Back up ramps and drive forward down family, pets, or bystanders avoid injury. ramps (Figure 22). To transport the machine: • Lock the brake and block the wheels. • Be sure the fuel shut-off valve is closed. •...
  • Page 33 Operation WARNING Loading a machine onto a trailer or truck increases the possibility of tip-over and could cause serious injury or death. • Use extreme caution when operating a machine on a ramp. • Ensure that the ROPS is in the up position and use the seat belt when loading or unloading the machine.
  • Page 34 Operation • Never allow children or others in or on towed equipment. • On slopes, the weight of the towed equipment may cause loss of traction, increased risk of rollover, and loss of control. Reduce the towed weight and slow down. •...

  • Page 35: Maintenance

    Use adequate jack stands. to the original equipment or failure to use • Carefully release pressure from components with original Exmark parts could lead to serious stored energy injury or death. Unauthorized changes to the machine, engine, fuel or venting system, may •...

  • Page 36: Recommended Maintenance Schedule(S)

    Every 25 hours • Clean the air cleaner foam element (more often in dusty, dirty conditions)(Exmark engine). • Grease the front caster axles (S- and E-Series Only). • Service the air cleaner paper element (more often under extremely dusty, dirty conditions)(Kohler engine).
  • Page 37 • Replace the spark plug (Kawasaki engine). • Check the spark plug (Kohler engine). Every 200 hours • Replace the air cleaner paper element (more often in dusty, dirty conditions)(Exmark engine). • Replace the spark plug (Exmark engine). • Replace the primary air filter (more often under extremely dusty, dirty conditions)(Kawasaki engine).

  • Page 38: Periodic Maintenance

    Important: If you are using a machine with service or making repairs around the engine area. an Exmark engine above 5,000 ft (1500 m) for a Do Not change the engine governor setting or continuous period, ensure that the High Altitude overspeed the engine.
  • Page 39 Maintenance Important: Do not attempt to clean the safety Release the latches on the air cleaner and pull the air cleaner cover off the air-cleaner body (see filter. If the safety filter is dirty, then the primary Figure 25). filter is damaged. Replace both filters. Installing the Filters Important: To prevent engine damage, always operate the engine with both air filters and the...
  • Page 40 Maintenance conditions)(Kawasaki Important: Do not clean the paper element engine). with pressurized air or liquids, such as solvent, gas, or kerosene. Replace the paper Check the air cleaner daily or before starting the element if it is damaged or cannot be cleaned engine.
  • Page 41 If the level is low, wipe off the area around the oil drains completely. fill cap, remove cap/dipstick and add oil to the “FULL” mark on the dipstick. Exmark 4-Cycle Start the engine and let it run until warm. This Premium Engine Oil is recommended; refer to warms the oil so it drains better.
  • Page 42 Checking the Engine Oil–Kawasaki Note: Torque the plug to 14 N-m (125 in-lb). Engine section. Change the engine oil filter. Apply a thin film of clean Exmark 4-Cycle Premium Engine Oil to the rubber gasket on the new filter.
  • Page 43 Maintenance Air Gap: 0.030 inch (.76 mm) Removing the Spark Plug Disengage the PTO and ensure the parking brake is engaged. Stop the engine, remove the key, and wait for all moving parts to stop before leaving the operating position. Disconnect the wire from the spark plug.

  • Page 44: Servicing A Kohler ® Engine

    Maintenance surface (Kawasaki Check the gap between the center and side engine). electrodes. Set the gap to 0.030 inch (.76 mm). Refer to the Engine Owner’s Manual. Installing the Spark Plug Servicing a Kohler ® Engine Install the spark plug. Make sure that the air gap is set correctly.
  • Page 45 If the level is low, wipe off the area around the oil Install the precleaner over the paper element. fill cap, remove cap/dipstick and add oil to the “F” (FULL) mark on the dipstick. Exmark 4-Cycle Install the precleaner and paper element onto the Premium Engine Oil is recommended; refer to air cleaner base.
  • Page 46 Every 100 hours (change it more often under a Change the engine oil filter. Apply a thin film of heavy load or in high clean Exmark 4-Cycle Premium Engine Oil to the temperatures) (Kohler rubber gasket on the new filter. Engine).
  • Page 47 Maintenance g027517 Figure 40 Check the oil level; refer to Checking the Engine Oil section. Start the engine and check for leaks. Servicing the Spark Plug g038074 Service Interval: Every 200 hours—Check Figure 39 the spark plug (Kohler engine). Note: Ensure the oil filter gasket touches the Every 500 hours—Replace the spark plug (Kohler engine, then an extra 3/4 turn is completed.

  • Page 48: Servicing An Exmark Engine

    Inspect the spark plug Push the wire onto the spark plug. Note: If you see light brown or gray on the Servicing an Exmark Engine insulator, the engine is operating properly. A black coating on the insulator usually means the air cleaner is dirty.
  • Page 49 Maintenance (more often in dusty, dirty conditions)(Exmark engine). Every 100 hours/Yearly (whichever comes first)—Replace the air cleaner foam element (more often in dusty, dirty conditions)(Exmark engine). g260622 Figure 44 Check the air cleaner daily or before starting the engine. Check for a buildup of dirt and debris around 1.
  • Page 50 Maintenance To learn more about the Exmark twin-cylinder engine go to https://exmark.com/engines or scan the QR code. g028322 Figure 48 Exmark Engine Checking the Engine Oil Level g027801 Service Interval: Before each use or daily Figure 46 Important: Do not overfill the crankcase with oil and run the engine;...
  • Page 51 If the level is low, wipe off the area around the oil the parking brake is engaged. fill cap, remove cap/dipstick and add oil to the “FULL” mark on the dipstick. Exmark 4-Cycle Stop the engine, remove the key, and wait for all Premium Engine Oil is recommended; refer to...
  • Page 52 Maintenance g027799 Figure 51 g029570 Figure 52 Change the engine oil filter. Apply a thin film of clean Exmark 4-Cycle Premium Engine Oil to the rubber gasket on the new filter.
  • Page 53 (whichever comes Slowly pour approximately 80% of the specified first)—Check the spark oil into the filler tube—use oil recommended in plug (Exmark engine). the Checking the Engine Oil Level section. Every 200 hours/Every 2 years (whichever comes first)—Replace the spark plug (Exmark engine).
  • Page 54 Important: Do Not clean the spark plug(s). Always replace the spark plug(s) when it has: Service Interval: Every 300 hours—Check a black coating, worn electrodes, an oily film, valve clearance (Exmark or cracks. engine). Contact an Authorized Service Dealer. • Intake: .004–.006 inches (.10–.15 mm) •...

  • Page 55: Check Battery Charge

    Check Fuel Hose DANGER Service Interval: Yearly—Check fuel hose Battery electrolyte contains sulfuric acid, which (Exmark engine). is poisonous and can cause severe burns. Swallowing electrolyte can be fatal or if it touches Inspect for cracks, swollen, or soft fuel hose; replace skin can cause severe burns.
  • Page 56 Maintenance Note: The following instructions are adapted Voltage Percent Maximum Charging from the SAE J1494 Rev. Dec. 2001 – Battery Reading Charge Charger Interval Booster Cables – Surface Vehicle Recommended Settings Practice (SAE – Society of Automotive 11.7–12.0 0–25% 3 Hours 14.4 volts/4 Engineers).

  • Page 57: Check Mower Blades

    Maintenance VEHICLE (NOT TO THE NEGATIVE POST) AWAY FROM THE BATTERY. STAND BACK. Start the vehicle and remove the cables in the reverse order of connection (the engine block (black) connection is the first to disconnect). Note: For Suspension Seat Models Only: Check the cables and make sure the ground cable does not g015189 Figure 60...
  • Page 58 Always install the original Exmark blades, blade bushings, and blade bolts as shown.

  • Page 59: Check Safety Interlock System

    Maintenance Check Safety Interlock System Service Interval: Before each use or daily Important: It is essential that operator safety mechanisms be connected and in proper operating condition prior to use. Note: If machine does not pass any of these tests, Do Not operate. Contact an Authorized Service Dealer. Note: To prevent engine cut-outs on rough terrain, the seat has a 1/2 second time delay before the engine begins to shutdown.
  • Page 60 Maintenance Check Engine Starting Circuit Chart Note: In the Check Engine Starting Circuit Chart, the state of system item that is bold is being checked in each scenario. System Parking Brake Motion Control Levers Operator Outcome (Blades) Engaged Disengaged Both levers moved in, or either Operator Starter must in seat...
  • Page 61 Maintenance Check Shutdown Circuit Chart Note: The state of system item(s) that is bold is being checked in each scenario. System Engine Parking Motion Control Operator Outcome Brake (Blades) Levers Running idle Disengaged Disengaged Both levers moved Raise off Engine must (1/3 throttle) out (neutral lock), of seat (but...

  • Page 62: Check Rollover Protections Systems (Roll Bar) Knobs

    Check that both the mounting hardware and the Check expansion tank and if necessary add knobs are in good working condition. Make sure the Exmark Premium Hydro Oil to the FULL COLD knobs are fully engaged with the ROPS in the raised line (see Figure 63).

  • Page 63: Lubricate Grease Fittings

    Axles multi-purpose grease. (X-Series) Insert one bearing, one new seal into the wheel. Note: Seals (Exmark P/N 103-0063) must be replaced. If the axle assembly has had both spacer nuts removed (or broken loose), apply a thread locking adhesive to one spacer nut and thread onto the axle with the wrench flats facing outward.

  • Page 64: Replace Emissions Air Intake Filter (If Applicable)

    Maintenance With the open end of the wheel facing up, fill the area inside the wheel around the axle full of NLGI grade #1 multi-purpose grease. Insert the second bearing and new seal into the wheel. Apply a thread locking adhesive to the 2nd spacer nut and thread onto the axle with the wrench flats facing outward.

  • Page 65: Change Hydraulic System Filter And Fluid

    Important: Before reinstalling new filters, Start engine and move throttle control ahead to apply a thin coat of Exmark Premium Hydro 1/2 throttle position. Disengage parking brake. Oil on the surface of the filters rubber seal.

  • Page 66: Thread Locking Adhesives

    Maintenance Adjustments WARNING Hot exhaust system components may ignite Note: Disengage PTO, shut off engine, wait for gasoline vapors even after the engine is stopped. all moving parts to stop, engage parking brake, and Hot particles exhausted during engine operation remove key before servicing, cleaning, or making any may ignite flammable materials.
  • Page 67 Maintenance X-Series—Block Height and Rake Table Deck Front Block Rear Block Rake “R” Size Height “A” Height “B” 2.63 inches 2.88 inches 1/16–5/16 inch 52, & (6.7 cm) (7.3 cm) (1.6–7.9 mm) Carefully rotate the blades side to side (Figure 68). Loosen the leveling adjust locking nuts (item 1 Figure 70) on all four corners so that the deck is sitting securely on all four blocks.

  • Page 68: Adjusting The Blade Slope

    Maintenance Set the gap between the spring and bracket to Measure from the tip of the front blade to the flat 3/4–7/8 inch (19–22 mm). surface and the tip of the rear blade to the flat surface (Figure 71). If the front blade tip is not “R”...

  • Page 69: Motion Control Handle Adjustment

    Maintenance Drive the machine onto a level surface. Disengage the blade control switch (PTO), move the motion control levers to the neutral locked position and set the parking brake. Stop the engine, wait for all moving parts to stop, and remove the key. Setup the machine to be pushed by hand (see Drive Wheel Release Valves in the Operation section).

  • Page 70: Full Forward Tracking Adjustment

    Maintenance The motion control levers can be adjusted higher or Insert a 3/16 inch hex wrench through the access lower for maximum operator comfort. hole on the front cover panel, rotate the tracking screw clockwise or counterclockwise to adjust the Remove the hardware holding the control lever to travel of the lever.

  • Page 71: Electric Clutch Adjustment

    Maintenance Temporarily install a jumper wire across the terminals in the connector of the main wiring harness. Start engine. Brake must be engaged and motion control levers out to start engine. Operator does not have to be in the seat. Run engine at full throttle and release brake.

  • Page 72: Cleaning

    Maintenance Cleaning CAUTION Excessive debris around engine cooling air intake and exhaust system area can cause engine, Cleaning and Storing Safety exhaust area, and hydraulic system to overheat • Park machine on level ground, disengage drives, which can create a fire hazard. set parking brake, stop engine, and remove key.

  • Page 73: Waste Disposal

    Maintenance Waste Disposal Motor Oil Disposal Engine oil and hydraulic oil are both pollutants to the environment. Dispose of used oil at a certified recycling center or according to your state and local regulations. Battery Disposal DANGER Battery electrolyte contains sulfuric acid, which is poisonous and can cause severe burns.

  • Page 74: Troubleshooting

    Troubleshooting Troubleshooting Important: It is essential that all operator safety mechanisms be connected and in proper operating condition prior to mower use. When a problem occurs, do not overlook the simple causes. For example: starting problems could be caused by an empty fuel tank. The following table lists some of the common causes of trouble.
  • Page 75 Troubleshooting Problem Possible Cause Corrective Action Engine loses power 1. Engine load is excessive 1. Reduce the ground speed. 2. Air cleaner is dirty. 2. Clean or replace the air cleaner element. 3. Oil level in the crankcase is low. 3.

  • Page 76: Schematics

    Schematics Schematics Electrical Logic Schematic — Exmark Engine g036150...
  • Page 77 Schematics Electrical Schematic — Kawasaki Engine g229559...
  • Page 78 Schematics Electrical Schematic — Kohler Engine g229558...

  • Page 79: Information

    While the exposure from Exmark products may be negligible or well within the “no significant risk” range, out of an abundance of caution, Exmark has elected to provide the Prop 65 warnings. Moreover, if Exmark does not provide these warnings, it could be sued by the State of California or by...
  • Page 80 Notes:...
  • Page 81 Service Record Date: Description of Work Done: Service Done By:...
  • Page 83 g011841 Figure 77 This page may be copied for personal use. 1. The maximum slope you can operate the machine on is 15 degrees. Use the slope indicator to determine the degree of slope of hills before operating. Do Not operate this machine on a slope greater than 15 degrees. Fold along the appropriate line to match the recommended slope.
  • Page 84 Pack) or Fill in Below Engine Model No. and Spec. No. Model No. Engine Serial No. (E/No) Serial No. ©2020 Exmark Mfg. Co., Inc. Part No. 4505-549 Rev. A 415 Industrial Row (402) 223-6375 Beatrice, NE 68310 Fax (402) 223-5489...

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