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Troy-Bilt 753B manual

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Table of contents for the manual

  • Page 1

    Wide-Cut TM 33" Combination Mower Models 753B F753B Operator ’ s Manual Warning: This unit is equipped with an internal combustion engine and should not be used on or near any unimproved forest-covered, brush-cov- ered or grass-covered land unless the engine’s exhaust system is equipped with a spark arrester meeting applicable local or sta[...]

  • Page 2

    For more details about your unit, visit our website at www .troybilt.com T ABLE OF CONTENTS Content Page Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .[...]

  • Page 3

    Safety Alert Symbol This is a safety alert symbol. It is used in this Owner’ s Manual to alert you to potential hazards. Whenever you see this symbol, read and obey the safety message that follows it. Failure to obey the safety message could result in personal injury or property damage. The engine exhaust from this product contains chemicals know[...]

  • Page 4

    2 15. Never operate mower in wet grass. Always be sure of your footing; keep a firm hold on the handle and walk; never run. 16. Disengage the Wheel Drive Lever on self-propelled models before starting the engine. 17. If the unit should start to vibrate ab- normally, stop the engine and dis- connect the spark plug wire. Then check immediately for th[...]

  • Page 5

    3 10. Mower blades are sharp and can cut. Wrap the blade or wear gloves, and use extra caution when servic- ing them. 11. Do not change the engine governor setting or overspeed the engine. 12. Do not touch engine parts which may be hot from operation. Allow parts to cool completely before in- specting, cleaning or repairing the mower. 13. To access[...]

  • Page 6

    4 INTRODUCTION Please carefully follow these assembly steps to properly prepare your machine for use. We recommend that you read this Section in its entirety before begin- ning assembly. NOTE: All references to left, right, front and rear of the machine are determined by standing behind the handlebars and facing the direction of forward travel. INS[...]

  • Page 7

    Section 2: Assembly STEP 3 A TT ACHING THE BA TTERY CABLES (MODEL F753B) The positive battery terminal is marked Pos. (+). The negative battery terminal is marked Neg. (–). The mower is shipped with the positive (Red) cable secured to the positive ter- minal (+) on the battery. Attach the ground (Black) cable to the negative ter- minal (–) on t[...]

  • Page 8

    Section 2: Assembly 1. Remove the vinyl grip (B, Figure 2-6) from the gear select lever (I). Place the wood edge against the edge of the grip and slowly pull off the grip. 2. Insert nylon bushing (Z, Figure 2-6) up into console (L). 3. Slide spring and washers (J) down onto gear select lever. 4. Insert gear select lever (I) up through nylon bushing[...]

  • Page 9

    7 Section 2: Assembly 9. When shift arm (X) is in neutral posi- tion, rotate shift link (P) toward end of gear select lever rod (I). Adjust length of shift link (P) as necessary to fit into hole in bottom of gear select lever (I). NOTE: Pin (K) on Gear Select Lever (I) must be held in the neutral position detent on the shift quadrant (see Figure 2-[...]

  • Page 10

    8 IMPORTANT: THE MOWER IS EQUIPPED WITH A BLADE-BRAKE- CLUTCH CONTROL SYSTEM WHICH IS DESIGNED TO STOP THE MOWER BLADES WITHIN THREE (3) SECONDS AFTER RELEASE OF THE OPERATOR PRESENCE CONTROL. THIS SYSTEM WILL STOP THE BLADES BUT NOT THE ENGINE. THEREFORE, YOU CAN DISEN- GAGE THE BLADE DRIVE AT ANYTIME WITHOUT HAVING TO STOP AND RESTART THE ENGINE.[...]

  • Page 11

    9 Section 3: Features and Controls Gear Select Lever Use this lever (C, Figure 3-1) to select any of four forward ground speeds (1 - Slow, 2 and 3 - Medium, 4 - Fast), N (Neutral) and R (Reverse). The gear shift pattern is shown in Figure 3-2. To avoid damaging the transmis- sion, do not shift gears when the mower is moving. For forward travel, use[...]

  • Page 12

    10 Engine Throttle Control This lever (G, Figure 3-6) is used to adjust engine speeds and, on non- Electric Start models, to stop the engine. Always run engine at fast speed setting for best mower performance. The throt- tle settings are shown below. Ignition/Starter Switch - (Electric Start Model) This three-position switch (H, Figure 3-6) is used[...]

  • Page 13

    11 BEFORE OPERA TING MOWER 1. Pre-Operation Checklist With the spark plug wire disconnected from the spark plug, perform the follow- ing checks and services before each use: 1. Review Section 1: “Safety” and Section 3, “Features and Controls” in this man- ual. Read the separate Engine Owner’s Manual provided with the unit. 2. Check unit f[...]

  • Page 14

    12 3. T est Blade-Brake-Clutch Control System The mower is equipped with a blade- brake-clutch which is designed to stop the mower blades within three (3) seconds after release of the Operator Presence Control or the Blade Drive Control. Never tamper with, or attempt to defeat the purpose of this safety device. The control system is a mechanical de[...]

  • Page 15

    Section 4: Operation 4. To start engine using recoil starter: A. Stand on left side (as viewed from behind handlebars) of machine. Be sure your feet are safely away from the underside of the mower deck and all mower controls are released. Place one foot on top of tire. B. Grasp starter rope handle (Figure 3- 7) and pull slowly until rope pulls slig[...]

  • Page 16

    Section 4: Operation C. Put the Gear Select Lever (C, Figure 4-2) in R (reverse) setting by first moving lever to N (neutral). Then pull lever up, turn it to R position, and release lever. D. To start the wheels, slowly squeeze Wheel Drive Control (D, Figure 4-2). To avoid sudden acceleration, slowly squeeze the lever. E . TO STOP THE WHEELS: • T[...]

  • Page 17

    15 Section 4: Operation BLADE BRAKE CONTROL TEST When the Operator Presence Control is released during operation of the mower, the engine does not stop, but the blades should stop within three (3) seconds. The following test provides a visual test of whether the Blade Brake Control System is functioning. Perform this test before each use of the mow[...]

  • Page 18

    Carefully read this Section on mower and engine maintenance and service. Performing the required maintenance according to schedule will ensure the proper performance and long life of your machine. NOTE: All references to left, right, front and rear of the machine are determined by standing behind the handlebars and facing the direction of forward t[...]

  • Page 19

    17 Section 5: Maintenance ENGINE CLEANING • Stop engine, wait for parts to stop moving, disconnect spark plug wire, and allow engine to cool before in- specting or cleaning engine. • Daily or more often, before running en- gine, remove grass and chaff from recoil finger guard or rotating screen to prevent engine damage caused by overheating. Al[...]

  • Page 20

    18 ENGINE STORAGE If engine will be unused for 30 days or more, prepare it for storage by following the recommended procedures found in the Engine Owner’s Manual. MOWER SERVICE The following maintenance/repair proce- dures can be performed by either the owner or an authorized service dealer. See an authorized service dealer for complete mower ser[...]

  • Page 21

    19 Section 5: Maintenance BLADE DRIVE BEL T REPLACEMENT Follow this procedure to remove and re- place the blade drive belt. An assistant will be needed. To Remove Belt: 1. Stop engine, wait for all parts to stop moving, and disconnect spark plug wire. 2. Disengage blade drive control (Figure 5-7) by releasing all controls on the mower. 3. Remove be[...]

  • Page 22

    20 Section 5: Maintenance BLADE BRAKE REPLACEMENT Follow this procedure to install a new blade brake. To Remove Blade Brake: 1. Stop engine, wait for all parts to stop moving, and disconnect spark plug wire. 2. Remove belt cover as described in “Belt Cover Removal” instructions. 3. Remove hardware (G, Figure 5-8) securing blade brake (H). 4. Re[...]

  • Page 23

    21 Section 5: Maintenance WHEEL DRIVE BEL T REPLACEMENT Follow this procedure to replace the wheel drive belt. 1. Stop engine, wait for all parts to stop moving, and disconnect spark plug wire. 2. Release all mower controls. 3. Remove belt cover as described in “Belt Cover Removal” instructions. 4. Locate wheel drive belt (O, Figure 5- 11) and [...]

  • Page 24

    Section 5: Maintenance 3. Slowly adjust at nut (O), if necessary, until the distance between the back of brake arm (N) and bracket (P) is 3/8”- 5/16". Use small adjustments (1/4 turn maximum). NOTE: It may be necessary to relieve spring tension when decreas- ing distance. To do so, have an assis- tant engage the Operator Presence Control whi[...]

  • Page 25

    Section 5: Maintenance MOWER BLADES Examine mower blades before operation. For efficient mowing, cutting edges of blades should always be kept sharp. Check for blade wear or damage. See Figure 5-16. Replace a severely worn or damaged blade with a new one. To Inspect Blades: 1. Stop engine, wait for all parts to stop moving, and disconnect spark plu[...]

  • Page 26

    24 Section 5: Maintenance BA TTERY MAINTENANCE Battery Care in Service The battery is sealed and is mainte- nance-free. Acid levels cannot be checked. • Always keep the battery cables and ter minals clean and free of corrosive build-up. • After cleaning the battery and termi- nals, apply a light coat of petroleum jelly or grease to both termina[...]

  • Page 27

    25 Section 5: Maintenance Lubrication Chart LUBRICATION TYPE Change Oil Change Oil (Lubrication Intervals Vary with Operating Conditions and Type of Oil Used) Grease Light Oil Grease ITEM Engine Crankcase Front Wheel Bearings Control Linkages/Pivots Transmission Output Shaft INTERVAL First 2 hours 25-50 hours 50 hours 25 hours 100 hours or Annually[...]

  • Page 28

    26 Section 5: Maintenance *Interval describes running time. **A hand-type grease gun is recommended when greasing your unit. High-pressure type grease guns could cause damage to fit- tings/seals. ***Consult engine manual for more detailed engine service infor- mation. ****Clean more often under dusty conditions or when airborne debris is present. R[...]

  • Page 29

    27 Engine does not turn over. Engine turns over but will not start. Engine starts only after repeated tries. Engine runs roughly. Engine stalls in a few seconds. Engine runs but unit does not move. Wheel drive always engaged. Engine stalls when hot. Engine overheats. Engine does not shut off. Blade drive inoperative. Blade drive always engaged. Bat[...]