Pro Unit Owner/Operator Manual Models 988105 - HR1536FX 988106 - HR1548FX 988107 - HR1548FL 988108 - HE1748FL 988109 - HE1752FL 988113 - HR1544FX 988116 - HR1548FLP 988117 - HE1752FLP 988120 - HR1536FXP 988314 - HR1536FXPCE ENGLISH FRANÇAIS ESPAÑOL 04941500 7/03 Printed in USA
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Stated Sound Power Levels are established following Annex VIII “Full Quality Assurance” of directive 2000/14/EC. Les déclarations de niveau de puissance acoustique sont établies conformément à l’Article VIII « Assurance qualité totale » de la directive 2000/14/EC. Die angegebenen Geräuschpegel wurden gemäß Anhang VIII „Totales Qualitäts-Management“ der EU-Richtlinie 2000/14/EC.
CONTROLS AND FEATURES 2 3 4 5 6 7 9 8 10 3 2 13 1 1 11 15 17 988105, 106, 107, 108, 109, 113 18 16 12 5 1 19 10 16 4 13 15 21 1 3 11 988116, 117, 120, 314 15 20 14 17 7 12 ENGLISH 1. Operator Presence Control Lever 2. Steering Lever Latch (988105, 106, 107, 108, 109, 113) 3. Parking Brake 4. Choke Control 5. Throttle Lever 6. Oil Light (988108, 109, 117) 7. PTO Switch 8. Speed Control Levers (988105, 106, 107, 108, 109, 113) 9.
º TABLE OF CONTENTS Controls and Features . . . . . . . . . . . . . . . . . . . . . 4 Storage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . 28 Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 Operation . . . . . . . . . . . . . . . . . . .
5. Explain recommended lubrication and maintenance. Advise customer on adjustments. 6. Instruct customer on controls and operation of unit. Discuss and emphasize the Safety Precautions. Give customer Owner/Operator, Parts, and Engine Manuals. Advise customer to thoroughly read and understand them. SAFETY NOTATIONS WARNING: This cutting machine is capable of amputating hands and feet and throwing objects.
1 DANGER / PELIGRO TO AVOID SERIOUS INJURY OR DEATH: Read the operator's manual. • Keep children and others away from unit while operating. • Never direct discharge toward other people. Thrown objects can cause injury. • Keep safety devices (guards, shields, switches, etc.) in place and working. • Check interlock system per manual before use. • Never allow operation by untrained persons. • Maintenez toujours en place tous les elements de securite (protecteurs, interupteurs, etc.).
ALWAYS check overhead and side clearances carefully before operation. ALWAYS be aware of traffic when operating along streets or curbs. Keep children and people away. Keep children out of work area and under watchful care of a responsible adult. Keep area of operation clear of all toys, pets, and debris. Thrown objects can cause injury. Check for weak spots on docks, ramps or floors. Avoid uneven work areas and rough terrain. ALWAYS be sure of your footing. Keep a firm hold on handlebar. Walk, NEVER run.
When engine is running and speed control lever is forward, holding only one steering lever will cause unit to circle around one drive wheel. Use care when approaching blind corners, shrubs, trees or other objects that may obscure view. ALWAYS disengage PTO, stop unit and engine, set parking brake, remove key and allow moving parts to stop before clearing clogs or cleaning unit. Never leave a running unit unattended. ALWAYS shut off engine before leaving unit. ALWAYS remove key to prevent unauthorized use.
ALWAYS keep body and hands away from pin holes or nozzles which eject hydraulic fluid under pressure. Allow hot parts to cool. ALWAYS block wheels, engage parking brake and know all jack stands are strong, secure and will hold weight of unit during maintenance. An extension spring, when extended, stores energy and can be dangerous. Always use tools specifically designed for installing or removing an extension spring. Always compress or extend springs slowly. ALWAYS maintain unit in safe operating condition.
Throttle Lever CAUTION: AVOID INJURY. Operate only when operator presence control is functioning correctly. See Check Safety Interlock System on page 17 for testing instructions. The throttle lever changes the speed of the engine. Move the throttle lever to Fast (1) to increase engine speed. Move the lever to Slow (2) to decrease engine speed. 1 2 Steering Levers (988105, 106, 107, 108, 109, 113) OG1180 Choke Control WARNING: AVOID INJURY.
Parking Brake Notch The parking brake holds the tractor in position when not in use. To engage parking brake, pull the brake handle back (1). To release parking brake, push the brake handle forward (2). 2 1 Cold Start Disengage OG1320 Figure 5 FILL FUEL TANK Recoil Starter Handle Pull the recoil starter handle to start the engine. WARNING: Fuel is highly flammable and its vapors are explosive. Handle with care. Use an approved fuel container. NO smoking, NO sparks, NO flames.
STARTING AND SHUT OFF Electric Start (988108, 109) Before Each Use To start the engine: 1. Engage parking brake. 2. Lock the steering lever latches in neutral. 3. Put speed control levers in neutral. 4. Move PTO switch to Off. 5. If the engine is cold, choke the engine. 6. Move the throttle to Fast. 7. Put the ignition key in the switch and turn it to Start. IMPORTANT: DO NOT operate starter motor more than 15 seconds per minute, as overheating and damage can occur.
TO OPERATE UNIT • To turn to the left, pull the left hand lever up. Operate the unit only in the operator’s position directly behind the handlebars. WARNING: AVOID INJURY. When the engine is running and the speed control lever is engaged, holding only one steering lever in neutral causes the unit to circle sharply around one drive wheel. OG1440 • To turn to the right, pull the right hand lever up. 988105, 106, 107, 108, 109, 113 To operate: 1. Start the engine (See Starting and Shut Off on page 13).
2. Move the speed control levers to the neutral position. 3. Turn off PTO switch. • To move in reverse, pull both control levers backward, past the neutral position. Pulling the levers farther back increases reverse speed. 988116, 117, 120, 314 To operate: 1. Start the engine (See Starting and Shut Off on page 13). 2. Move the throttle lever to the Fast position. 3. Engage operator presence control. OG1650 WARNING: Uncontrolled reverse travel can result in serious injury.
PARKING Fixed Deck Cutting Heights 988105, 106, 107, 108, 109, 113 1. Shut off the unit. See Shut Off on page 13 and "To stop mowing." 2. Remove the key. 3. Set parking brake. 4. Chock or block the wheels if parked on a slope. Inches (mm) 1 (25) (38) 1.5 2 (51) (64) 2.5 3 (76) (90) 3.5 988116, 117, 120, 314 4 (102) Figure 6 OG1380 Floating Decks (988107, 108, 109, 116, 117) 1. Shut off the unit. See Shut Off on page 13 and "To stop mowing." 2.
TO PUSH UNIT BY HAND IMPORTANT: Towing the unit will damage hydraulic motors. To move the unit without the engine running: 1. Rotate the bypass valve levers located on the back side of the pumps approximately 1/2 turn counterclockwise. 2. Release parking brake. 3. Push unit to desired location. 4. Rotate the bypass valve levers located on the back side of the pumps approximately 1/2 turn clockwise to operate the unit.
OPERATOR PRESENCE CONTROL ENGINE Check tires for proper inflation, excessive wear or damage before each use. The correct air pressure is 8 to 16 psi (55 to 110 kPa). PARKING BRAKE CHECK TIRE PRESSURE To test: 1. With engine off, set controls as listed in line A of the table below. 2. Try starting the engine. See Starting and Shut Off on page 13. IMPORTANT: If the system does not function properly, do not operate the unit until repairs are made. 3. Repeat steps 1-2 for lines B-C of the table below. 4.
To clean terminals: 1. Remove battery cover. 2. Remove battery cables from terminals. 3. Clean or service battery away from unit. Remove corrosion from battery terminals and cable connections with wire brush, then wash with a weak baking soda solution. 4. Apply a thin coat of dielectric grease or petroleum jelly to terminals and cable ends to retard corrosion. 5. Replace battery and secure with battery cover. CHECK FUEL FILTER See engine manual for detailed instructions.
3. Increase engine speed to half. Set speed control 1/3 forward. Run engine for 3-5 minutes to bleed hydraulic motors. NOTE: If necessary, start the motors turning by hand. 4. Shut off engine and lower the unit to the floor. IMPORTANT: If any squealing noise occurs in the motors, repeat the run-in procedure. PUMP ACTUATING LINKAGE (988105, 106, 107, 108, 109, 113) Clean debris from pump actuating linkage to ensure smooth operation.
PARKING BRAKE ADJUSTMENT Check Reverse Tracking (988116, 117, 120, 314) To check: 1. Pull back parking brake lever (Figure 12). Brake arm must contact tire and brake lever must press brake switch, and there must be an 1/8" (3 mm) gap between the parking brake arm and the stop bolt on the unit frame. WARNING: Uncontrolled reverse travel can result in serious injury. Do not put control levers into the reverse position unless you are prepared to operate in reverse. 1.
4. Start engine. 5. Run engine at full throttle. 6. Disengage parking brake. Check for creep. 7. Release steering control levers. Check for creep. If unit creeps when parking brake and steering levers are released: Adjust steering rod clevis. To adjust (Figure 15): 1. Stop engine. 2. Put speed control levers in neutral. 3. Remove pump actuating spring. 4. Disconnect steering control rod clevis from speed control plate. 5. Turn clevis on steering control rod to adjust.
Slower Speed 1 1. Clevis 2. Speed Control Plate 3. Pump Actuating Spring 4. Pump Actuating Spring Anchor 1 2 3 2 3 4 3 5 1. Steering Control Lever 2. Steering Link Rod 3. Jam Nut 4. Steering Link Clevis 5. Steering Control Rod 4 Faster Speed 1 Figure 16 2 OG1370 3 SPEED RANGE ADJUSTMENT (988105, 106, 107, 108, 109, 113) The steering levers control travel speed. The unit can be adjusted from a slower to a faster speed range.
4. Remove belt from engine sheave and pump pulleys. 5. Install new belt on engine sheave and pumps. 6. Reconnect idler spring to idler. 7. Put mower belt back on mower clutch sheave. 1 Connect clevis here for faster speed range. 1 4 2 5 2 3 4 1. Mower Clutch Sheave 2. Mower Belt 3. Pump Belt Idler Spring 1. Neutral Bracket 2. Clevis 3.
4 3 2 5. Connect positive (+) lead of charger to positive (+) terminal, and negative (–) lead to negative (–) terminal. 6. Charge battery according to charger and battery manufacturers’ instructions. 7. Reinstall battery on unit and connect positive (+) cable first, then negative (–) cable. 1 4 1. Armature 2. Rotor 3. Inspection Slot 4.
36" BELT REPLACEMENT Deck Belt NOTE: Mower drive belt must be removed before removing the deck belt. 3 6 3 4 2 2 5 5 2 1 4 1 OG1390 5 1. Idler Spring 2. Deck Pulley 3. Mower Clutch Sheave 4. Belt 7 OG1395 8 Figure 22 1. Stop engine, remove key and wait for all hot parts to cool. 2. Set deck to the fourth cutting height. 3. Remove deck cover. 4. Remove deck idler spring. 5. Remove belt from deck pulleys and mower clutch sheave. 6. Install new belt. 7. Replace idler spring. 8.
MOWER BLADES Replace 1. Put the blades, flat washers, lock washers, and the bolts back on the spindle shafts. 2. Tighten the bolts to a torque of 115-125 lbf-ft (156-169.5 N•m). 3. Replace ignition wire on spark plugs. NOTE: If mower is used under sandy soil conditions, replace blades when air lifts become eroded through at ends (Figure 24). DO NOT sharpen to this pattern Sharpen the Mower Blades Figure 24. CAUTION: DO NOT sharpen mower blades while on unit.
STORAGE NOTE: Clean unit thoroughly with mild soap and low pressure water and lubricate (see Maintenance). Touch up all scratched painted surfaces. Do not allow gasoline or oil to remain on any decals. WARNING: AVOID INJURY. Read and understand the entire Safety section before proceeding. Engine Storage – Two Months or More Check each item in the Maintenance Schedule on page 17, but do not add gasoline. Clean the unit. Touch up all scratched painted surfaces.
PROBLEM PROBABLE CAUSE CORRECTION Unit pulls sharply to the left or right when the speed control levers are quickly moved all the way forward Unit does not straighten immediately when the steering levers are released 1. Rust on the clutch sliding pin. Unit loses power 1. Binding in the steering or parking brake linkage. 1. Clean heavy rust deposits from the pin. See Service and Adjustments. 2. Check linkage for debris or damage. Repair if necessary.
SPECIFICATIONS Model Number 988105 Description Length – in. (cm) 988106 988107 HR1536FX HR1548FX HR1548FL 79.75 (202.50) 73.5 (186.70) 988108 988109 HE1748FL HE1752FL 77 (195.60) Height – in. (cm) 42 (106.7) Width – in. (cm) 38.2 (97) Actual Weight – lbs (kg) 575 (260.8) Battery 50.6 (128.5) 625 (284) 52.4 (133.1) 690 (313.6) N/A 702 (319) 12V 255 CCA Brakes Hydrostatic-Dynamic Turning Radius– in. (cm) 0 Tire Size 18 x 8.
SPECIFICATIONS Model Number Description 988113 988116 HR1544FX HR1548FLP 988117 988120 HE1752FLP HR1536FXP 77.5 (196.78) 988314 HR1536FXPCE Length – in. (cm) 75.5 (191.77) 84.25 (214.0) Height – in. (cm) 42 (106.7) Width – in. (cm) 47 (119.38) 50.6 (128.5) 52.4 (133.1) 38.2 (97) Actual Weight – lbs (kg) 625 (284.1) 644 (292.6) 721 (327.6) 594 (269.4) 12V 255 CCA N/A 43.5 (110.5) Battery N/A Brakes Hydrostatic-Dynamic Turning Radius– in. (cm) 0 Tire Size 18 x 8.
2-Year Limited Warranty Gravely Division of Ariens Company 655 West Ryan Street P.O. Box 157 Brillion, WI 54110-0157 920-756-2141 Fax 920-756-2407 www.gravely.com Gravely Division of Ariens Company (Gravely) hereby warrants to the original consumer purchaser that all Gravely Two-Wheel, Professional G, Pro, and ProMaster products will be free from defects in material and workmanship for a period of two (2) years from the date of purchase or 1000 hours, whichever comes first.
GRAVELY A Division of Ariens Company 655 West Ryan Street P.O. Box 157 Brillion, WI 54110-0157 920-756-2141 Fax 920-756-2407 www.gravely.
