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Owner's Manual
Rotary Mower
HRM21PVA • HRM21SVA
©1990 American Honda Motor Co., Inc.—All Rights Reserved
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Thank you for purchasing a Honda rotary mulching mower. This manual describes operation and maintenance of Honda HRM21 rotary mowers. All information in this publication is based on the latest product information available at the time of printing. Honda Power Equipment Mfg., Inc. reserves the right to make changes at any time without notice and without incurring any obligation. No part of this publication may be reproduced without writen permission. This manual is a permanent part of the
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CONTENTS 1. SAFETY .......................................... 4 Safety Label Locations .............................. 4 Safety Information ................................. 5 Important Message to Parents ........................ 7 2. COMPONENT IDENTIFICATION . . . . . . . . . . . . . . . . . . . . . . . . . 8 3. BLADES AND ATTACHMENTS .......................... 10 Low-Lift Blade (standard) ............................ 10 High-Lift Blade (optional) .................. ; .......... 10 Sid
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CONTENTS 7. MOWING AND MULCHING RECOMMENDATIONS . . . . . . . . . . . . 29 8. TRANSPORTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 33 9. MAINTENANCE .................................... Maintenance Schedule .............................. 33 Engine Oil Change. ................................ 34 35 Air Filter Service .................................. Spark Plug Service ................................ 36 Spark Arrester Maintenance (optional equipment)
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1. SAFETY SAFETY LABEL LOCATIONS Read all safety instructions before operating the mower. FOR YOUR SAFETY Read owner’s manual before operation and maintenance. AWARNING Gasoline is flammable. Stop engine, avoid heat, Objects hidden in the lawn can be sparks, and open flame thrown by the mower blade. when refueling. They can hurt you or any bystander. I Clear lawn before mowing. I Keep people and pets away while mowing. You can be hurt by thrown objects or cut by the rotating b
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1. SAFETY SAFETY INFORMATION For your safety and the safety of others, pay special attention to these precautions: Operator Responsibility l Know how to stop the engine quickly in case of emergency. Understand the use of all controls. l Be sure that anyone who operates the lawn mower receives proper instruction, Allowing anyone, especially children, to operate the mower without proper instruction may result in serious injury. l Wear long pants and protective footwear. Operating the mow
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1. SAFETY Fire and Burn Hazards Gasoline is extremely flammable, and gasoline vapor can explode Use extreme care when handling gasoline. KEEP OUT OF REACH OF CHILDREN. l Refuel in a well-ventilated area with the engine stopped. Keep flames and sparks away, and do not smoke in the area. l Refuel carefully to avoid spilling fuel. Avoid overfilling the fuel tank (there should be no fuel in the filler neck). After refueling, tighten the filler cap securely. If any fuel is spilled, make sure
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1. SAFETY IMPORTANT MESSAGE TO PARENTS YOUR CHILDREN’S SAFETY IS VERY IMPORTANT to Honda. That’s why we urge you to read this message before letting your youngster operate this lawn mower. Lawn mowers are tools, not toys. As with any equipment, bad judgments can result in serious injuries. You can help prevent accidents by making good decisions about it when, and how your youngster operates this equipment. The first question you’ll need to ask is whether your youngster is capable of ope
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2. COMPONENT IDENTIFICATION FLYWHEEL BRAKE LEVER THROTTLE LEVER I HANDLEBAR - COIL STARTER FUEL TANK CAP \ CUTTING HEIGHT ADJUSTMENT LEVER CUTTING HEIGHT ADJUSTMENT LEVER \ MUFFLER ENGINE SERIAL NUMBER I MOWER DECK Record the frame and engine serial numbers for your reference. Refer to the serial numbers when ordering parts, and when making technical or warranty inquiries (see page 51). Frame serial number: - - - - - - - Engine serial number: GXVllO- - - - - - - - 8
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2. COMPONENT IDENTIFICATION DRIVE CLUTCH LEVER (HRM21SVA) THROTTLE LEVER AIR CLEANER COVER / / RECOIL STARTER GRIP OIL FILLER CAP FUEL VALVE CUTTING HEIGHT ADJUSTMENT LEVER I CUTTING HEIGHT CARBURETOR ADJUSTMENT LEVER HRM21PVA: Manually propelled model HRM2lSVA: Self-propelled model 9
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3. BLADES AND ATTACHMENTS Honda HRM21 mulching mowers are factory-equipped with a low-lift blade and mower deck cover designed to cut grass clippings and fallen leaves into fine particles that will fall through the turf and decompose quickly. This returns nutrients to the soil and reduces the need for raking, bagging, and disposal. A side-discharge kit and a grass bag kit are available as optional equipment. Side-discharging mowing, or bagging, should be considered where grass has grown t
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3. BLADES AND ATTACHMENTS REAR BAG GRASS BAG (optional) HANDLE FRONT Installation I BAG HANDLE 1. Close the grass bag zipper. 2. Hook the rear bag handle on the handlebar hook. 3. Open the discharge guard, and hook the mouth of the grass bag onto the mower deck. 4. Release the discharge guard. Removal 1. Raise the discharge guard. 2. Grasp the front bag handle, and raise the mouth of the bag to remove it from the mower deck. 3. Release the discharge guard. 4. Unhook the rea
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4. CONTROLS FUEL VALVE The fuel valve opens and closes the connection between the fuel tank and the carburetor. The fuel valve must be in the ON position for the engine to run. When the mower is not in use, turn the fuel valve to the OFF position to prevent the possibility of carburetor flooding, and to reduce the possibility of fuel leakage. [AWARNING 1 Gasoline is extreme- ly flammable, and gasoline vapor can explode. Turn the fuel valve to the OFF position when the mower is no
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4. CONTROLS FLYWHEEL BRAKE LEVER (all models) FLYWHEEL BRAKE LEVER This lever is connected to the engine flywheel brake and the ignition system. The engine will not start or run unless this lever is pushed forward. To start the engine and blade, push the lever forward and hold it against the handlebar while operating the recoil starter. Continue to hold the lever against the handlebar while mowing and mulching. To stop the engine and blade, release the lever. DRIVE CLUTCH LEVER (
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4. CONTROLS CUTTING HEIGHT ADJUSTMENT LEVERS (BWAR I II- “IcIYW ucIII cause serious injury. Stop the engine before adjusting cutting height. There are six cutting height settings: 3/4 in, l-1/4 in, l-3/4 in, 2-l/4 in, 2-5/8 in, and 3 in. These are appro- ximate figures, as the actual height of cut grass will vary with lawn and soil conditions. To adjust cutting height, pull each ADJUSTMENT LEVERS adjustment lever toward the wheel, and move it into another notch. Set all four adjus
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5. PRE-OPERATION CHECK Check the following items before starting BLADE Turn the fuel valve OFF, and tilt the mower to the left, so the carburetor side is up. NOTE: Hard starting and fuel leakage may result if the mower is tilted with the carburetor side down. Inspect the blade for wear and damage k CRACKED NORMAL EXCESSIVELY BENT WORN A dull blade can be sharpened, but a blade that is worn out, bent, cracked, or otherwise damaged must be replaced. A worn or damaged blade could br
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5. PRE-OPERATION CHECK ATTACHMENTS Side-Discharge Adapter (optional) Check the side-discharge adapter to be sure it is in good condition and properly attached. Operating the mower with a damaged or loose side- discharge adapter will increase risk of injury from objects thrown by the blade. DISCHARGE Grass Bag (optional) Check that the grass bag is in good condition and not clogged. A clogged grass bag will not collect grass efficiently. When the bag needs cleaning, wash it with a
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5. PRE-OPERATION CHECK ENGINE OIL Check the engine oil level with the engine stopped and the mower on a level surface. 1. Remove the oil filler cap, and wipe the dipstick clean. 2. Insert and remove the dipstick without screwing it into the filler neck. Check the oil level shown on the dipstick. ’ FILLER CAP/ ’ 3. If the oil level is low (near the DIPSTICK bottom of the dipstick), fill to the top of the oil filler neck with the recommended oil. pimq Running the engine with a l
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5. PRE-OPERATION CHECK FUEL Fuel tank capacity: 0.21 US gal (0.8 e) Remove the tank cap and check the fuel level. Refill the tank if the fuel level is low. Refuel carefully to avoid overfilling or spilling fuel. There should be no fuel in the filler neck. IAWARNINGI.’ Gasoline is extremely flammable, and gasoline vapor can --- explode. Use extreme care when handling gasoline. Refuel in a well-ventilated area with the engine stopped. Do not smoke or allow flames or sparks in the area w
