Honda HT-R3811 Owner'S Manual Download

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Summary of Contents for HT-R3811

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Page 3: ...vere personal injury or loss of life if instructions are not followed CAUTION Indicates a possibility of personal injury or equipment damage if instructions are not followed NOTE Gives helpful information l Honda riding mowers are designed to give safe and dependable service if operated according to instructions l Read and understand this Owner s Manual before operating the riding mower Failure to...

Page 4: ...NTROLS 10 4 PRE OPERATION CHECKS 15 5 OPERATION 23 l Starting the engine 23 l Mowing 26 Stopping the engine 30 High altitude operation 31 6 TRANSPORTING STORAGE 32 7 MAINTENANCE 38 8 TROUBLESHOOTING 55 9 SPECIFICATIONS 58 10 WIRING DIAGRAM 59 11 WARRANTY SERVICE 60 2 ...

Page 5: ...SAFE OPERATING ANGLE 10 DEGREES 17 GRADE 10 MAX REDUCE SPEED WHEN TURNING OR OPERATING ON SLOPES I GSTOP ENGINE BEFORE REMOVING GRASS CATCHER OR CLEANING DISCHARGE CHUTE KEEP ALL SHIELDS AND SAFETY DEVICES IN PLACE GKEEP PEOPLE AND PETS AT A SAFE DISTANCE WHILE OPERATING ...

Page 6: ...he blade mounting bolts l Do not remove any guards warning labels shields or safety devices they are installed for your safety l Know how to stop the engine and blades quickly Thoroughly understand operation of all controls l Never permit anyone to operate the riding mower without proper instructions l Do not allow passengers to ride on the mower or any of its attachments l Children should not be ...

Page 7: ...ld be thrown out by the spinning blades and cause an in jury or equipment damage l Select a safe operating speed gear position for the area to be mowed 5th gear should be used only while driving to and from the storage area l Always ensure that the area in front of and behind the riding mower is clear of people pets and debris before starting l Be very careful when you operate the riding mower in ...

Page 8: ...ll bags may cause the mower to tip over CLEANING AND STORAGE l Leaves grass clippings oil and other combustible materials can become a fire hazard Be sure to keep the engine compartment the upper cutter deck surfaces and the belt and pulley areas clean l Stop the engine before removing the grass bags or cleaning the discharge chute l Check the condition of the grass catcher bags frequently For you...

Page 9: ...2 COMPONENT IDENTIFICATION STEERING WHEEL ENGINE SWITCH LEVER I BRAKE PEDAL AIR INTAKE DISCHARGE CHUTE WARNING BUZZER 7 ...

Page 10: ...POWER TAKE OFF DECK HEIGHT ADJUSTING L CUTTER DECK REAR BODY Raise 8 ...

Page 11: ...Engine compartment AIR CLEANER FUEL VALVE PLUG OIL DRAIN PLUG OIL FILLER CAP LOCATED ON THE FRAME 9 ...

Page 12: ...al circuits The switch is located on the right hand side in front of the gear shift lever Key positions START to start the engine ON to run the engine after starting OFF to stop the engine ENGINE SWITCH NOTE The starter motor will not work unless the shift lever is in NEUTRAL and the P T 0 lever is in the OFF Disengaged position 2 Throttle lever The throttle lever controls engine speed from SLOW i...

Page 13: ... or out SET BUTTON 57 0 4 Shift lever This lever is used to select one of the five forward speeds neutral or reverse The drive clutch automatically disengages while the lever is being moved The clutch will then engage automatically when put into gear unless the brake pedal is depressed Enml Do not operate the shift lever on a slope CAUTION Bring the riding mower to a complete stop before shifting ...

Page 14: ... engine from starting unless the P T O lever is in the OFF position 6 Brake pedal Depressing the pedal will first disengage the riding mower drive clutch As you continue to depress the pedal the brake will be applied to stop the riding mower When the clutch pedal is released the clutch will automatically engage smoothly CAUTION Releasing the brake pedal too slowly can cause the clutch to slip and ...

Page 15: ...us engine damage B Parking brake reminder steady buzzing sound The warning buzzer will sound continuously if the transmission is shifted in to gear while the parking brake is engaged If you hear a steady buzz from the warning buzzer release the parking brake or shift the transmission into neutral immediately See page 14 m Operating the riding mower with the parking brake set will result in severe ...

Page 16: ...he parking brake is engaged while the transmission is in gear and the engine switch is ON CAUTION l When washing the riding mower do not allow water to get into the warn ing buzzer holes l Never park the riding mower on a slope To release pull the lever up slightly and press the lever set button lower the lever while holding the button in E8Nm Operating the riding mower with the parking brake set ...

Page 17: ...up remove the engine switch key and disconnect the spark plug cap before performing the pre operation inspection 1 Make sure the cooling air intake screens are clean CAUTION If the cooling air intake screens are blocked the engine may overheat REAR BODY 15 ...

Page 18: ...c Insert the dipstick into the oil filler neck but do not screw it in d Check the oil level shown on the dipstick If near or below the lower level mark fill to the upper level mark with the recommended oil Use Honda 4 stroke oil or an equivalent high detergent premium quality motor oil certified to meet or exceed U S automobile manufacturers requirements for service classification SE or SF Motor o...

Page 19: ...soline mixture Avoid getting dirt dust or water in the fuel tank Use of a lower octane gasoline can cause persistent pinging or heavy spark knock a metallic rapping noise which if severe can lead to engine damage CAUTION If spark knock or pinging occurs at a steady engine speed under normal load change brands of gasoline If spark knock or pinging persists consult your authorized Honda dealer Failu...

Page 20: ...ended by Honda There are two types of gasohol one containing ethanol and the other containing methanol Do not use gasohol that contains more than 10 ethanol Do not use gasoline containing methanol methyl or wood alcohol that does not also contain cosolvents and corrosion inhibitors for methanol Never use gasoline contain ing more than 5 methanol even if it has cosolvents and corrosion inhibitors N...

Page 21: ...NTS 5 Check brake lining wear Inspect brake lining condition every time the riding mower is used Firmly set the parking brake and then check the position of the brake wear in dicator If the indicator is near the wear limit take the riding mower to an Authorized Honda Power Equipment Dealer for repair CAUTION Under no circumstances should the riding mower be operated if the brake lining is at the s...

Page 22: ...o the instructions on pages 47 50 n Blade belt tension 1 Move the P T O lever to the ON Engaged position 2 Raise the cutter deck as far as it will go with the cutter deck height ad justing lever 3 If the index mark on the tensioner arm aligns with or goes inward past the wear indicator on the cutter deck adjust the belt tension according to the instructions on page 47 BLADE BELT PRIMARY BELT CUTTE...

Page 23: ...cid electrolyte Contact with skin or eyes may cause severe burns Wear protective clothing and a face shield If electrolyte gets on your skin flush with water If electrolyte gets in your eyes flush with water for at least 15 minutes and call a physician immediately l Electrolyte is poisonous If swallowed drink large quantities of water or milk and follow with milk of magnesia or vegetable oil and c...

Page 24: ...nd comfortably 5 Tighten the seat mounting nuts securely Be sure to re connect the 2pin connectors 2 pin CONNECTORS SEAT MOUNTING 9 Check the tire pressure CAUTION Improper inflation may lead to premature tire failure Never exceed the manufacturer s maximum tire pressure specification Check the Pressure tire pressure with an air pressure gauge Front 1 O kg cm 14 2 psi Rear 0 7 kg cm2 9 96 psi 22 ...

Page 25: ...the rear body turn the fuel valve ON and close the rear body REAR BODY 2 Sit on the seat and check that the parking brake lever is set the transmission is in neutral and the P T O lever is in the OFF Disengaged position 3 Move the throttle lever to the START CHOKE position NOTE When the engine is warm or the air temperature is high move the throttle to SLOW START CHOKE 23 ...

Page 26: ...more than 5 seconds If the engine fails to start release the key and wait at least 10 seconds before operating the starter motor again 5 After the engine starts let the engine switch return to ON 6 After the engine warms up move the throttle lever to the SLOW position SLOW 24 ...

Page 27: ...e should stop immediately 2 Return the P T O lever to OFF Disengaged and restart the engine Release the parking brake and place the shift lever in the 1st speed range While driving slowly rise off the seat the engine should stop immediately CAUTION Perform this check on level ground never on a slope 25 ...

Page 28: ... In tall grass first mow with the cutter deck fully raised 3 in this will expose any hidden obstacles When you are sure the area is completely cleared re mow at the desired height NOTE For best results wait until the lawn is dry before mowing 1 Set the cutter deck height adjusting lever to the desired cutting height 26 ...

Page 29: ... operating at full throttle START CHOKE FAST SLOW J NOTE The riding mower can be operated at intermediate throttle settings if desired but always maintain sufficient engine speed for good pulling power and efficient blade operation Use the shift lever to select the desired driving speed range 3 Move the P T O lever to the ON Engaged position ON Engayed OFF Disengaged 27 ...

Page 30: ... all of its operating characteristics UPHILLSTARTING PROCEDURE rnml If possible avoid stopping the riding mower while driving uphill However if it is necessary to stop follow this special procedure A Set parking brake B Apply pressure to the brake pedal C Move the throttle lever to mid range D Shift the transmission to 1st gear position E Release the brake pedal F Wait until the clutch engages G T...

Page 31: ...nd and continue cutting in the reverse direction 0 7 0 JJ 0 In a large area The first round of cuts is the key to making a neat finish First make 2 or 3 turns in a clockwise direction As you reach the center of the area turn to the right and continue cutting in a counterclockwise direction until you have finished the upper half of the area Cut the grass in the remaining half in a counterclockwise ...

Page 32: ... In normal use 1 Move the P T O lever to OFF Disengaged ON kqaged OFF 1Disengaged 2 Move the shift lever to the Neutral position 3 Set the parking brake 4 Turn the engine switch OFF 51 Raise the rear body turn the fuel valve OFF and close the rear body I REAR BODY 30 ...

Page 33: ... than 6 000 feet above sea level have your authorized Honda Riding Mower dealer perform these car buretor modifications Even with suitable carburetor jetting engine horsepower will decrease ap proximately 3 5 for each 1 000 foot increase in altitude The affect of altitude on horsepower will be greater than this if no carburetor modifica tion is made CAUTION Operation of the riding mower at an alti...

Page 34: ...t end REAR _ PROPER TIE DOWN POINTS mm Spilled fuel may ignite To avoid fuel and oil spillage keep the riding mower level when transporting CAUTION Do not pull the riding mower behind any other vehicle and do not use the riding mower to push another vehicle Preparation for storage CAUTION If the riding mower has been running the engine will be very hot allow to cool before proceeding The following...

Page 35: ...nths raise the rear body and remove the spark plug and pour three tablespoons approximately 1 oz of clean motor oil into the cylinder Place the P T O lever in the OFF position and the shift lever in the N posi tion With the parking brake applied lower the cutter deck to the bottom Reaching from the rear of the mower grasp the primary belt at point A and slowly pull it toward you to turn the engine...

Page 36: ... the way to the left and then remove the belt stopper BELT STOPPER 4 2 Remove the primary belt from the pulley on the underside of the transmission DECK BELT CAUTION When the cutter deck is removed the return spring will cause the deck height adjusting lever to snap unward when the release button is press ed Hold the lever firmly and carefully return it to the UPPER position after removing the dec...

Page 37: ...ock pins and washers from the right and left of the cutter deck P TE ROD WASHER LOCK PIN 7 mm COLLAR CUTTERDECK 4 5 Remove the front deck arms from the frame body by removing the two lock pins and washers WASHER 2 4 6 Disengage the cutter deck from the rear deck arms by moving it from side to side 35 ...

Page 38: ...d free of accumulated grass clippings by washing it down with a hose after use and or cleaning it with a wire brush and scraper Remove any rust and apply a rust resistant paint Cleaning and rust prevention are especially important before seasonal storage 7 Reinstall the cutter deck by reversing the removal procedure LOCK PIN 14 mm LOCK PIN 7 mm 8 Store the riding mower on a level surface in a dry ...

Page 39: ...e engine a few revolutions with the starter motor before reinstalling the spark plug 3 Thread the spark plug in as far as possible by hand then tighten it l 8 to l 4 turn further with the plug wrench 4 Check the engine oil level see page 16 5 Fill the fuel tank and start the engine by following the starting instructions see page 23 NOTE If the cylinder was coated with oil the engine will smoke at ...

Page 40: ...eels he is mechanically qualified CAUTION Use only genuine Honda parts or their equivalent for maintenance or repair Replacement parts which are not of equivalent quality may damage the riding mower Periodic inspection and adjustment of the Honda HT R381 1 is essentia if high level performance is to be maintained Regular maintenance will also ensure a long service life The required service interva...

Page 41: ...ease Fuel line Check Replace if necessary Valve clearance Check Readjust Engine fins and shroud Clean 0 c 3 0 12 0 2 0 2 0 2 0 12 NOTE 1 Service the air cleaner more frequently when used in dusty areas 2 These items should be serviced by an authorized Honda dealer unless the owner has proper tools and IS mechanically proficient 3 For professional commercial use log hours of operation to determine ...

Page 42: ...dealer for repair 4 Refill to the upper level mark on the dipstick with the recommended oil see p 15 Tighten tl 78 oil filler cap securely OILsFILLER CAP UPPER LEVEL OIL CAPACITY 1 1Iz 1 2 us qt OIL DRAIN BOLT LOWEil LEVEL REAR WHEEL CAUTION Used motor oil may cause skin cancer if repeatedly left in contact with the skin for prolonged periods Although this is unlikely unless you han dle used oil o...

Page 43: ...the wing nuts and the air cleaner cover Remove the elements and separate them Carefully check both elements for holes or tears and replace if damaged WING NUTS Foam element Clean in warm soapy water rinse and allow to dry thoroughly Or clean in high flash LtpMtNT point solvent and allow to dry Dip the element in clean engine oil and squeeze out all the excess The engine will smoke during initial s...

Page 44: ... from around the spark plug base 3 Use a spark plug wrench to remove the spark plug SPARK SPARK PLUG WRENCH 4 Visually inspect the spark plug Discard it if the insulator is cracked or chipped Clean the spark plug with a wire brush if it is to be reused 5 Measure the plug gap with a feeler gauge The gap should be 0 7 0 8 mm 0 028 0 031 in Correct as necess iry by carefully bending the side electrod...

Page 45: ... l 2 turn with a wrench to compress its washer If a used plug is being reinstalled it should only require l 8 to l 4 turn after being seated CAUTION l The spark plug must be securely tightened An improperly tightened plug can become very hot and possibly damage the engine l Never use a spark plug with an improper heat range 43 ...

Page 46: ...teries in an enclosed space l The battery contains sulfuric acid electrolyte Contact with skin or eyes may cause severe burns Wear protective clothing and a face shield If electrolyte gets on your skin flush with water 8 If electrolyte gets in your eyes flush with water for at least 15 minutes and call a physician immgdiately l Electrolyte is poisonous If swallowed drink large quantities of water ...

Page 47: ...s point the index mark on the clutch arm should be between the two notches on the clutch cable joint If the in dex mark moves to the service limit notch the clutch disk may be worn out consult your authorized Honda dealer NOTE Do not force the clutch arm during this inspection or a false failure in dication will result CLUTCH ARM CLUTCH ARM SERVICE LIMIT NOTCH I I CABLE JOINT 45 ...

Page 48: ...l hub nut washer and the front wheel 3 Install the front wheel in the reverse order of removal Be sure to use a new cotter pin and bend it properly as shown Rear wheel 1 Remove the cotter pin 2 Jack up the rear of the mower and remove the 14 mm wheel hub washer nut and the rear wheel 3 Apply a thin coat of grease to the axle splined portion before installing the 4 rear wheel Install the rear wheel...

Page 49: ...ustment 1 Set the steering wheel in the straight ahead position 2 Move the P T O lever to the ON Engaged position 3 Lower the cutter deck as far as it will go with the cutter deck height adjusting lever 4 Loosen the 8 x 16 mm flange bolt and pull the tensioner pulley outward un til the index mark on the tensioner arm aligns with the tension alignment mark on the cutter deck Hold the tensioner pull...

Page 50: ...oves to protect your hands when replacing the blade belt and don t put your hands between the pulleys l Grasp the knob on the tensioner pulley firmly and return the tensioner arm slowly don t let it snap back 4 Remove the belt guide plate by removing the two 8 mm bolts 5 Remove the two belt guide bolts and remove the deck belt 6 The installation sequence is essentially the reverse order of removal...

Page 51: ...ne 8 mm bolt and three 8 mm nuts 3 Pull the A portion of the blade belt toward the direction indicated by the ar row and remove the blade belt from the pulley A 4 Install a new blade belt in the reverse order of removal 5 Rotate the pulley to check that the belt moves smoothly after assembly BL COVERS p 8 mm BOLT 49 ...

Page 52: ...m the pulley on the belt tensioner arm while pressing out on the arm by hand Then remove the primary belt from the pulley on the engine 3 Remove the tensioner arm by removing the 10 mm bolt and remove the primary belt by pulling it out by hand 4 Install a new primary belt Install the remaining parts in the reverse order of removal TENSIONER ARM TENS10 10 km FLANGE BOLT 50 ...

Page 53: ...n Blade inspection 1 Remove the cutter deck from the riding mower see page 34 thru 36 2 Inspect the blade for cracks bends or signs of wear If the blade is bent damaged or badly worn replace it CAUTION Use only genuide Honda replacement blade or their equivalent 0 NEW X Replace X Replace X Replace FLAT PART OF BLADE LIFT 0 LIFT WORN OR DAMAGED If the lift of the blade is worn or damaged the mower ...

Page 54: ...y and will become dull quickly l 64 in IO 4 mm 4 When resharpening do not file the blade parallel to the original edge Instead file the blade on an angle as shown and do not extend the cutting edge any farther toward the center of the blade Be sure to remove equal amounts of material from each end of the blade to maintain proper balance CORRECT METHOD INCORRECT METHOD m i 2 a a 1 4 P Keep original...

Page 55: ...e the blade bolt washer and blade BLADE BOLT BLADE 2 Clean any dirt and grass from around the blade shaft and inside the deck 3 Install a new blade onto the shaft and secure it with the blade bolt and washer Tighten the bolts securely and install the mower deck Blade bolt tightening torque 4 5 5 5 kg m 32 55 39 78 ft lb TORQUE WRENCH BLADE 53 ...

Page 56: ... is hot Allow it to cool before proceeding CAUTION The spark arrester must be serviced every 100 hours to main tain its efficiency 1 Remove the three 6 mm bolts and 8 mm bolt that hold the shift lever guide stay and then remove the stay 2 Remove the two 6 mm bolts from the exhaust pipe tip Remove the exhaust pipe tip and spark arrester be careful not to damage the spark ar rester screen 3 Use a wi...

Page 57: ... 23 If that s not the problem see your authorized HONDA dealer 7 Discharged battery or Charge battery or retighten terminal loose terminal see p 441 Engine loses power 1 Dirty air cleaner elements Clean or replace elements see p 41 2 Spark plug faulty or Regap plug or replace see p 42 improperly gapped 3 Engine overloaded w Shift to lower speed Engine overheats 1 Cooling air intake plugged Clean c...

Page 58: ...ance Battery will not charge 1 Dead cell in battery ti Replace battery 2 Loose electrical connec Check connections and lines tions or broken wire Uneven mowing 1 Riding mower speed too fast Shift to lower speed 2 Grass accumulation Clean deck inside see p 36 inside deck 3 Dull blade Sharpen blade or replace 4 Tires improperly inflated Check tire inflation see p 22 5 Mower not level Check cutter de...

Page 59: ... second pass 4 Grass bags full Empty grass bags Optional part Blades do not rotate or stop 1 Blade belt worn or broken Replace with new belt see p 47 50 2 P T O lever malfunction See your authorized HONDA dealer Riding mower does not move or clutch does not engage properly when the transmission is shifted into gear 1 Faulty clutch assy See your authorized HONDA dealer 2 Transmission does not See y...

Page 60: ...9 6 x 39 4 in Wheel tread Front 570 mm 22 4 in Rear Wheel base 635 mm 25 0 in 1100 mm 43 3 in Cutting width 970 mm 38 0 in Cutting height 1 II 2 2l 3 3l in Approx Dry weight 177 kg 390 2 lb Tire size Front 11 x 4 00 5 Rear 16 x 6 50 8 Air pressu re Front 1 O kg cm2 Rear 0 7 kg cm2 Gear selections 5 Forward 1 Reverse Travel speed 3300 rpm First 2 4 km h 1 5 mile h Second 3 7 km h 2 3 mile h Third 5...

Page 61: ...CONTROL UNIT BUZZER RELAY CONTROL RELAY RECTIFIER STARTER RELAY SEAT SWITCH PARKING BRAKE SWITCH SWITCH OIL LEVEL MOTOR RAT7 SWITCH ax_ a ERY 112V MAHI COMBINATION BUZZER T TAN PLUG GROUND 003oz 751 7ooo ITCH ...

Page 62: ...ct the Power Equipment Customer Relations Department of American Honda Motor Co Inc American Honda Motor Co Inc Power Equipment Customer Relations Department P O Box 50 Gardena California 90247 0805 Telephone 2 13 604 2400 We will need the following information inorder to assist you Your name address and telephone number Product model and serial number Date of purchase Dealer name and address Natu...

Page 63: ...his way If you are dissatisfied with the decision made by the dealership s management contact the Honda Power Equipment Customer Relations Office You can write American Honda Motor Co Inc Power Equipment Division Customer Relations Office 4900 Marconi Drive Alpharetta GA 30005 8847 Or telephone 770 497 6400 M F 8 30 am 7 00 pm EST When you write or call please provide the following information Mod...

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