Honda Power Products UMK425T Owner'S Manual Download

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GRASS/WEED TRIMMER

UMK425T

OWNER'S MANUAL

42VR26001

00X42-VR2-6001

Read and understand this Owner’s Manual before operating the grass/weed trimmer.

Honda Motor Co., Ltd. 2017

Printed in Thailand

PANTONE364C

Black

Summary of Contents for UMK425T

Page 1: ...SS WEEDTRIMMER UMK425T OWNER S MANUAL 42VR26001 00X42 VR2 6001 Read and understand this Owner s Manual before operating the grass weed trimmer Honda Motor Co Ltd 2017 Printed inThailand PANTONE364C Bl...

Page 2: ...l injury or death if instructions are not followed CAUTION Indicates a possibility of personal injury or equipment damage if instructions are not followed NOTE Gives helpful information If a problem s...

Page 3: ...DENTIFICATION 15 4 CONTROLS 17 5 PRE OPERATION CHECK 20 6 STARTING THE ENGINE 36 7 TRIMMING OPERATION 40 8 STOPPING THE ENGINE 44 9 MAINTENANCE 45 10 TRANSPORTING 62 11 STORAGE 63 12 TROUBLESHOOTING 6...

Page 4: ...y or equipment damage Keep all persons and pets away from the grass weed trimmer operating area To prevent accidental contacts with the wheeling cutting attachment or thrown objects from the wheeling...

Page 5: ...trimmer Local regulations may restrict the age of the operator If you lend or resell your grass weed trimmer to a third person instruct him or her with how to handle the product and alert him or her t...

Page 6: ...ught in the grass weed trimmer or on the weed causing injury Bind your hair if it is long and do not let your hair below your shoulder Protective devices Goggles Wear the goggles or other eye protecti...

Page 7: ...ng the amount of pollens you breathe Before each use visually inspect the grass weed trimmer including a cutting attachment for any damage and looseness of fastening part Avoid operating the grass wee...

Page 8: ...lication Before cranking the engine be sure to check the cutting attachment cannot come into contact with the ground or any obstruction Failure to do so may result in losing control of the grass weed...

Page 9: ...t the damaged rotating parts or loose fasteners Examine the cause of the problem and do not start the engine before repair is made When wires catch on the wheeling cutting attachment and flap around R...

Page 10: ...osition if you are very tall Do not operate the grass weed trimmer if the cutting attachment is close to your feet when you hold the grass weed trimmer at the correct position Check the balance of the...

Page 11: ...Keep your body warm especially your hands wrists and arms Take your breaks at shorter intervals and arm exercises well to maintain good blood circulation Do not smoke while working When you feel disco...

Page 12: ...ass weed trimmer off if children enter the area Children should never be allowed to operate the grass weed trimmer even under adult supervision Thrown Object Hazard Objects hit by the wheeling cutting...

Page 13: ...creating any source of ignition until gasoline vapors have dissipated Tighten all fuel tanks and container caps securely When you start the engine after refueling be sure to start the engine at least...

Page 14: ...to death If you run the engine in an area that is confined or even partially enclosed the air you breathe could contain a dangerous amount of exhaust gas To keep exhaust gas from building up provide...

Page 15: ...remind you pictorially of main precautions to take during use Their meanings are explained on page 3 These decals are considered as a part of the grass weed trimmer Should one become detached or unrea...

Page 16: ...15 3 COMPONENT IDENTIFICATION ENGINE SWITCH THROTTLE TRIGGER CUTTING BLADE GEAR CASE GRASS DEFLECTOR U SHAPED HANDLE FRAME SERIAL NUMBER 42VR26001_Eng book Page 15 Tuesday May 23 2017 4 37 PM...

Page 17: ...d when making technical or warranty inquiries Frame serial number Engine serial number Date purchased AIR CLEANER TOP COVER SPARK PLUG FUEL TANK CAP FUEL RETURN TUBE FUEL TUBE ENGINE SERIAL NUMBER STA...

Page 18: ...n for the engine to run Turning the engine switch to the OFF position stops the engine 2 Priming pump Pressing the priming pump feeds the gasoline from the fuel tank to the carburetor This procedure i...

Page 19: ...ting a cold engine The OPEN position provides the correct fuel mixture for operation after starting and for restarting a warm engine 4 Starter grip Pulling the starter grip operates the recoil starter...

Page 20: ...radually the engine speed increases and the cutting attachment starts to run Pull the throttle trigger more to accelerate the engine speed and the cutting rotating speed By releasing the throttle trig...

Page 21: ...he grass weed trimmer on a level surface and remove the oil filler cap 2 Check the oil level it should reach to the edge of the oil filler neck and check the engine oil for contamination and deteriora...

Page 22: ...ure it includes the letters SE or later or equivalent SAE 10W 30 is recommended for general use Other viscosities shown in the chart may be used when the average temperature in your area is within the...

Page 23: ...he area where the engine is refueled or where gasoline is stored Do not overfill the fuel tank there should be no fuel in the filler neck After refueling make sure the tank cap is closed properly and...

Page 24: ...l level is low refuel the fuel tank until the level as specified Remove the fuel tank cap gradually to release a pressurized air in the fuel tank Fuel in the fuel tank may spout out if the fuel tank c...

Page 25: ...hol 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 con...

Page 26: ...on the top of the air cleaner cover and its two lower tabs 3 Check the air cleaner element for dirt or obstruction Clean the air cleaner element if it is dirty see page 50 4 Reinstall the air cleaner...

Page 27: ...e throttle trigger a few times It should be 0 5 2 5 mm at the tip of the throttle cable If the free play is not as specified above adjust the free play see page 56 Check the throttle trigger operates...

Page 28: ...ght occur due to its instability 1 Wear the shoulder harness so that the hip pad is on the right side of your body Make sure the harness does not twist 2 Adjust the length of the harness as shown in t...

Page 29: ...28 3 Insert the end of the harness in to the hoop Insert the end of the harness in to the hoop HOOP 42VR26001_Eng book Page 28 Tuesday May 23 2017 4 37 PM...

Page 30: ...der harness 1 Put on the shoulder harness 2 Set the hook to the hanger 3 Check that the hook is fastened to the hanger securely HIP PAD HANGER SHOULDER HARNESS HOOK 42VR26001_Eng book Page 29 Tuesday...

Page 31: ...ur hands when working around the cutting blade 1 Stop the engine with the engine switch to the OFF position 2 Check the tightness of the cutting blade nut Tighten the nut if it is loose see page 52 If...

Page 32: ...be sure that they are correctly installed and are not damaged If the grass deflector is damaged replace it before using the grass weed trimmer 3 Check the grass deflector mounting bolts for looseness...

Page 33: ...ade If there is remove it 3 After removing grass or thread check if there is contaminated material such as mud or dirt in between the grass guard and cutting blade If there is remove the cutting blade...

Page 34: ...the blade holder A 4 Remove grass thread mud or dirt around blade holder A and the drive bolt Inspect the grass guard wear When the A part of the grass guard no longer wears down the grass guard must...

Page 35: ...ear and Inspect the drive bolt make sure to assemble blade holder A to the gear case before attaching the cutting blade To attach the cutting blade refer to page 52 Inspect the Nut cover Check the wea...

Page 36: ...t and nut for looseness Tighten them securely if necessary 2 Check the handle for loose mounting bolts or screws and tighten them securely if necessary User recommended to set up the handle with 90 de...

Page 37: ...the working area CAUTION Do not start the engine with the cutting attachment touched the ground or any obstruction The trimmer can make unexpected movement causing injury in your legs etc NOTE Place...

Page 38: ...ss the priming pump several times until the priming pump is filled with fuel Even if the priming pump is pressed too many times the extra fuel will return to the fuel tank If the priming pump is not p...

Page 39: ...tly CAUTION Do not allow the starter grip to snap back against the engine Return it gently to prevent damage to the starter Damage may result if the starter grip is pulled while the engine is running...

Page 40: ...ion This engine when operated at high altitude with the carburetor modifications for high altitude use will meet each emission standard throughout its useful life Even with carburetor modification eng...

Page 41: ...oulder harness hook by its hanger 3 Keep the trimmer so that the cutting attachment is parallel to the ground by holding the handle with your both hands 4 Adjust the shoulder harness length so that th...

Page 42: ...Slacken your grip on the handle gradually Do not release but put your both hands lightly on the handle and be sure that the height of the cutting attachment from the ground does not change large this...

Page 43: ...d correctly before using the trimmer For idle adjustment consult your authorized Honda servicing dealer Hold the trimmer firmly with your both hands with your fingers and thumbs encircling the handles...

Page 44: ...s When operating the grass weed trimmer on a moderate slope stand at the down side of the slope The steep slope is slippery and you can lose your balance Do not operate the grass weed trimmer on a ste...

Page 45: ...t the cutting attachment keeps turning for a while by inertia after the engine is stopped NOTE Be sure that the engine is stopped and the cutting attachment stops turning before placing the grass weed...

Page 46: ...e or repair Replacement parts which are not of equivalent quality may damage the trimmer Periodic inspection and adjustment of the Honda UMK425T is essential if high level performance is to be maintai...

Page 47: ...Check adjust o 54 55 Replace o Throttle cable Check o 26 56 Shoulder harness Check o 29 Cutting attachment Check o 30 Replace if necessary Grass deflector Check o 31 Engine cooling fins Check o 58 Nut...

Page 48: ...lied are necessary for performing some periodic maintenance simple adjustments and repairs SPARK PLUG WRENCH 8 10mm WRENCH 5 mm HEXAGON WRENCH 4 mm HEXAGON WRENCH TOOL BAG 42VR26001_Eng book Page 47 T...

Page 49: ...d complete draining 1 Check the fuel tank cap is tightened 2 Remove the oil filler cap and drain the oil into the oil container by tipping the engine toward the oil filler neck 3 Refill with the recom...

Page 50: ...manner that is compatible with the environment We suggest you take it in a sealed container to your local service station for reclamation Do not throw it in the trash or pour it on the ground 42VR2600...

Page 51: ...ash point solvents for cleaning the air cleaner element A fire or explosion could result CAUTION Never run the engine without the air cleaner Rapid engine wear will result 1 Move the choke lever to th...

Page 52: ...and squeeze out all the excess The engine will smoke during initial startup if too much oil is left in the foam 4 Reinstall the air cleaner element 5 Reinstall the air cleaner cover by inserting the l...

Page 53: ...on wrench remains in the hole then loosen the blade nut turns clockwise Pay attention to the order and orientation of the parts as they are removed 3 Installation can be performed in the reverse order...

Page 54: ...rbox 2 Remove the grass deflector mounting bolts and then remove the grass deflector 3 Place the protector holder on new grass deflector and align the bolt holes 4 Keep the grass deflector position an...

Page 55: ...of incorrect heat range 1 Loosen the hex socket bolt with a 4mm hexagon wrench then remove the top cover 2 Remove the spark plug cap and use the proper size spark plug wrench to remove the spark plug...

Page 56: ...ng a new spark plug tighten 1 2 turn after the spark plug seats to compress the washer If reinstalling a used spark plug tighten 1 8 1 4 turn after the spark plug seats to compress the washer TORQUE 1...

Page 57: ...cable free play at the tip of the cable by pulling and releasing the throttle trigger a few times and adjust the free play by using the adjusting nut It should be 0 5 2 5 mm at the tip of the throttl...

Page 58: ...erting the lower tabs then insert the upper tab CAUTION After removing the air cleaner cover reinstall the air cleaner cover securely Failure to tighten the cover securely may cause the cover to come...

Page 59: ...spect the cooling fin visually through the cover If there are dry grass leaves and mud clogged consult your authorized Honda dealer for cleaning it COOLING FINS Inside the top cover 42VR26001_Eng book...

Page 60: ...r Stop the engine Inspect in a well ventilated area Keep heat sparks and flame away Do not smoke Do not spill the gasoline If you spilled the gasoline wipe it up immediately and dispose of the cloth o...

Page 61: ...ble or high flash point solvent If the fuel filter is excessively dirty replace it 5 Remove water and dirt stood in the fuel tank by rinsing the inside of the fuel tank with nonflammable or high flash...

Page 62: ...ct an authorized Honda dealer 10 Grease of gear case 1 Remove the hex bolt of gear case 2 Apply the grease 6 7 g or full at the gear case 3 Install the hex bolt securely Tighten the hex bolt securely...

Page 63: ...sure the fuel cap is securely tightened Carrying the grass weed trimmer by hand Attach it to the shoulder harness or hold the main pipe to carry it in a good balance Transporting the grass weed trimme...

Page 64: ...s in the OFF position to be certain the engine will not start accidentally 1 Clean all exterior surfaces touch up any damaged paint and coat other areas that may rust with a light film of oil 2 Drain...

Page 65: ...ransport gasoline in PET poly ethylene terephthalate bottles 3 Let the engine working until it stops because lack of fuel CAUTION The engine will be very hot allow it to cool before proceeding 4 Chang...

Page 66: ...eral times see page 37 4 Is the spark plug in good condition Clean readjust gap and dry the spark plug Replace it if necessary see page 54 5 If the engine still does not start take the grass weed trim...

Page 67: ...ugal clutch Cutter Type 2 teeth blade O D 300 mm Number of rotation When engine rotation speed 7 000 rpm 5 158 rpm Overall length With blade 1 910 mm Overall width 637 mm Overall height 426 mm Dry mas...

Page 68: ...onditions maintenance and other variables NOTE Specifications may vary according to the types and are subject to change without notice MODEL UMK425T Engine model GX25T Engine description code GCALT En...

Page 69: ...68 MEMO 42VR26001_Eng book Page 68 Tuesday May 23 2017 4 37 PM...

Page 70: ...SS WEEDTRIMMER UMK425T OWNER S MANUAL 42VR26001 00X42 VR2 6001 Read and understand this Owner s Manual before operating the grass weed trimmer Honda Motor Co Ltd 2017 Printed inThailand PANTONE364C Bl...

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