HERO HUNK Manual
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HERO HUNK Manual

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PREFACE
Thank you for selecting a Hero MotoCorp HUNK. We wish you many miles of
continued riding pleasure in the years ahead.
We, at Hero MotoCorp, are committed to demonstrate excellence in our environment
performance on a continual basis, as an intrinsic element of our corporate philosophy. To
achieve this we commit ourselves to continue product innovations to improve
environment compatibility, comply with all applicable legislation including
environment legislation and strengthen the green supply chain.
Your motorcycle is conforming to latest (Bharat stage-III norms) regulation for emission,
safety & noise levels. We are also using non asbestos brake shoes / pads and engine
gaskets which are environment friendly in nature.
This booklet is your guide to the basic operation and maintenance of your new
Hero MotoCorp HUNK. Please take time to read it carefully. As with any fine machine,
proper care and maintenance are essential for trouble-free operation and optimum
performance.
Your Authorised Hero MotoCorp dealer will be glad to provide further information or
assistance and is equipped to handle your future service needs.
Let us make this world a safer, healthier and more environment friendly place.

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  • Page 1 This booklet is your guide to the basic operation and maintenance of your new Hero MotoCorp HUNK. Please take time to read it carefully. As with any fine machine, proper care and maintenance are essential for trouble-free operation and optimum performance.
  • Page 2 AVAILABLE AT THE TIME OF ITS PRINTING APPROVAL, AND THE ACCURACY OR CORRECTNESS OF THE SAME IS NOT UNDERTAKEN OR GUARANTEED. Hero MotoCorp Ltd. RESERVES THE RIGHT TO MAKE CHANGES IN ITS CONTENTS AT ANY TIME WITHOUT NOTICE AND/OR INCURRING ANY OBLIGATION, WHATSOEVER. NO ONE IS ALLOWED TO REPRODUCE ANY PART OF THIS PUBLICATION WITHOUT OBTAINING PRIOR WRITTEN PERMISSION FROM Hero MotoCorp Ltd.
  • Page 3 DIGITAL CLOCK FUEL VALVE STOP LAMP SWITCH SEAT LOCK HEADLAMP ADJUSTMENT AIR CLEANER DRAIN TUBE HERO GENUINE PARTS...
  • Page 4 Engine Year of Assembly Month of Serial Manufacturer Vehicle Year of Assembly Month of Serial Description Mfg. Plant Mfg. Number Code Description Mfg. Plant Mfg. Number Model Code.: Engine Model HUNK Electric Start/Disc/Cast (RR Disc) HUNK Electric Start/Disc/Cast (RR Drum)
  • Page 5 Overall Length 2080 mm Overall Width 765 mm Overall Height 1095 mm Wheelbase 1325 mm Saddle Height 795 mm Ground Clearance 145 mm 147 kg 1.2 litres 1 litre at draining 12.4 litres (Minimum) 2.2 litres (Usable Reserve) 143 ml DoT 3 or DoT 4 10.6 kW (14.4 PS) @ 8500 r/min 57.3 x 57.8 mm...
  • Page 6 Telescopic Hydraulic Shock Absorbers Front Suspension Rectangular Swingarm with 5 step Rear Suspension adjustable Gas Reservoir Suspension (GRS ) 96.2 mm 80 /100 x 18-47 P (Tubeless Tyre) MRF 100 / 90 x 18-56 P (Tubeless Tyre) MRF Dia 240 mm Disc Type Dia 130 mm / Dia 220 mm Drum / Disc Type...
  • Page 7 9. To make yourself more visible, wear bright reflective clothing that fits well. 10. Tightly wrap loose / hanging clothes & avoid entangling with moving parts. 11. Get your motorcycle serviced regularly by the Authorised Hero MotoCorp workshop.
  • Page 8 Genuine Engine Oil: Hero 4T Plus SAE 10W 30 SL grade (JASO MA2) engine oil recommended by Hero MotoCorp and make sure you change it every 6000 kms.
  • Page 9 FRONT TOP VIEW (1) Horn switch (12) High beam indicator (2) Turn signal switch (13) Tachometer (3) Headlamp dimmer switch (14) LCD (Liquid Crystal Display) panel (4) Clutch lever (15) Neutral indicator (5) Pass lamp switch (16) Front brake lever (6) Choke lever (17) Throttle grip (7) Rear view mirror...
  • Page 10 LEFT SIDE VIEW (1) Fuel valve (7) Side stand (12) Rear reflex reflector (2) Air suction valve (inside) (8) Pillion foot rest (13) Seat lock (3) Starter motor (9) Side cover left (14) Rear turn signal lamp (4) Gear shift pedal (10) Women pillion step (15) Tail / Stop lamp (5) Rider foot rest...
  • Page 11 RIGHT SIDE VIEW (1) Rear disc (Optional) (9) Front caliper (15) R e a r b r a k e f l u i d (2) Pillion foot rest assembly reservoir (Optional) (3) Rear master cylinder (Optional) (10) Front Disc (16) Fuse box (4) Rider foot rest (11) Headlamp...
  • Page 12 headlamp. Turn signal indicators Flashes when turn signal switch is operated. Tachometer Indicates engine r/min. High beam indicator Light glows when Headlamp is in Hi Beam. Tripmeter Shows the distance traveled during a trip after setting to zero. Speedometer Indicates riding speed. Digital clock Indicates hour and minute (page no.
  • Page 13 Ignition Switch “ON” Position “OFF” Position/ Lock Open “LOCK” Position 1. Ignition switch 2. Ignition key 3. Steering lock position The LCD panel illuminates & initial display of multi function digital segments are displayed. Key cannot be removed. “ON” The tachometer needle and the fuel gauge needle will swing to the maximum scale once and back to its normal position.
  • Page 14 DIGITAL CLOCK Digital Clock (1) shows hour and minute. To adjust the time, proceed as follows : 1. Turn the ignition switch "ON". x1000r/min TRIP TOTAL 2. Press and hold Select Button (2) and Reset Button (3) simultaneously for more than 2 seconds. The clock will be set in the adjust mode with the hour's digit display blinking.
  • Page 15 ODOMETER / TRIPMETER • The time advances by 1 minute, each time the button is pressed. The Tripmeter (A) shows distance traveled • The time advances fast when the per trip. button is pressed and held. The Odometer (B) shows accumulated distance traveled.

  • Page 16: Left Handlebar Controls

    LEFT HANDLEBAR CONTROLS 4. Choke Lever 1. Headlamp Dimmer Switch To apply choke, pull the lever downwards, Press the switch upwards for High Beam towards the rider, as directed on the switch. and downwards for Low Beam. NOTE 2. Turn Signal Lamp Switch Do not accelerate during starting when the Shift the turn signal switch sideways for choke is on.

  • Page 17: Right Handlebar Controls

    RIGHT HANDLEBAR CONTROLS 2. Starter Switch Ensure starter switch (2) is operated when the vehicle is in neutral. If the vehicle is engaged in gear press the clutch lever before operating the starter switch. Release starter switch after the engine has started. CAUTION Never hold starter switch continuously for more than 5 seconds as continuous...

  • Page 18: Fuel Valve

    FUEL VALVE At “RES”, fuel will flow from the reserve fuel supply to the carburetor. Use the reserve fuel only when the main supply is exhausted. Refill the tank as soon as possible after switching to “RES”. The reserve fuel supply is 2.2 litres (usable).
  • Page 19 Do not operate the motorcycle with the fuel valve in the “RES” position after refilling. You may run out of fuel, with no reserve. (3) Fuel tank cap FUEL TANK 3. To lock fuel tank cap - close the lid back Fuel tank capacity is 12.4 litres (minimum) on the opening and press gently.
  • Page 20 AIR CLEANER DRAIN TUBE Do not park the motorcycle under direct Remove the drain tube (1) from the air sunlight as it causes evaporation of petrol due to heat and deterioration of paint gloss cleaner assembly (2) and drain the deposit due to ultra violet rays.
  • Page 21 ENGINE OIL Use hero genuine engine oil or recommended grade oil. BRAND: Hero 4T plus GRADE: SAE 10W 30 SL Grade (JASO MA2). Manufactured by : UPPER 1. Tide Water Oil Co. (India) Ltd. LOWER 2. Savita Oil Technologies Limited.
  • Page 22 Drain To drain the oil, remove the oil level dipstick and drain plug (1). Drain plug bolt. 3. Fill the crankcase through the oil level dipstick with approximately 1 litre with recommended grade oil. Reinstall the oil level dipstick. Make sure that oil level is at the upper level mark of the oil level dipstick with the motorcycle in an upright position, and that there are no oil leaks.
  • Page 23 TYRES are more likely to fail from being overheated. The tyres fitted on your motorcycle are of Over-inflated tyres make your motorcycle TUBELESS type. ride harshly, are more prone to damage To safely operate your motorcycle, your from road hazards, and wear unevenly. tyres must be of the proper type and size, in good condition with adequate tread, and We recommend that you visually check...
  • Page 24 The recommended “cold” tyre pressures are: Look for : Bumps or bulges in the side of the tyre Rider only Rider and Pillion or the tread. Replace the tyre if you find Front 2.00 kg/cm (29 psi) 2.00 kg/cm (29 psi) any bumps or bulges.
  • Page 25 Repairing a puncture or removing a wheel requires special tools and technical expertise. If a tyre is punctured or damaged, it is advised to visit nearest tyre Hero MotoCorp manufacture, authorised dealer/workshop or the tyre repair shop who has expertise in repairing methods of tubeless tyre.
  • Page 26 NOTE or improperly inflated can cause a For repair and replacement of tyre it is crash in which you can be seriously advised to visit your Authorised Hero hurt or killed. MotoCorp workshop. Operation with excessively worn tyres is hazardous and will adversely affect Important Safety Reminders traction and handling.
  • Page 27 6. Clutch - check for smooth operation. Adjust free play (page 40-41). 7. Drive Chain - check condition and slackness (page 41-44). Lubricate if necessary. 8. Throttle - check for smooth opening and closing in all steering positions (page 36-37). 9.
  • Page 28 Pull the choke lever downwards as indicated (Use choke during cold conditions) 5. Press the starter switch. (Alternatively, kick start Turn the fuel valve pedal can be used for “ON”. starting). Push the choke lever upwards, after warming up the engine for few s e c o n d s .
  • Page 29 If the engine fails to start after repeated attempts, it may be flooded with excess fuel. To clear a flooded engine, turn the ignition switch “OFF” and move choke lever fully upwards to “OFF” position. Open the throttle When the motorcycle attains a fully and crank the engine with the starter moderate speed, close the throttle, press switch.
  • Page 30 cause loss of control. For your safety, exercise extreme caution when braking, accelerating or turning. When descending a long steep slope use engine braking (power) by changing to lower gears, with intermittent use of both brakes. Continuous brake application can overheat the brakes and reduce their effectiveness.

  • Page 31: Anti-Theft Tips

    3) Water Proof Plaster - 1 No. Tool Bag - 1 No. 4) Elastic Bandage - 1 No. +, - No. 2 Driver- 1 No. 5) Gauze (Rolled Bandage) - 1 No. 6) Sterilised Elastic Plaster - 1 No. Grip- 1 No. 7) First Aid Bag - 1 No.

  • Page 32: Safety Precaution

    * Carbon monoxide poisoning from engine exhaust. Remember that your Authorised Hero Be sure there is adequate ventilation MotoCorp workshop knows your whenever you operate the engine. motorcycle best and is fully equipped to maintain and repair it.
  • Page 33 Sustained high speed operation or operation in unusually wet or dusty conditions will require more frequent service than specified in the Maintenance Schedule. Consult your Authorised Hero MotoCorp workshop for recommendation applicable to your individual needs and use.
  • Page 34 1st 60 Next 100 Next 100 Next 100 Next 100 Next 100 12000- 15000- 3000-3500 6000-6500 9000-9500 6000 9000 12000 3000 15000 12500 15500 Air Cleaner* Electric Starter I,C,L,A at every 2000 kms I,C,L,A at every 2000 kms Battery Voltage Brake Shoe / Pads Wear...
  • Page 35 Replace once in every two years or 30000 kms. whichever is earlier. Check idle CO emission along with idle r/min / idle CO adjustment (if required). Visit Authorised Hero MotoCorp workshop for inspection, cleaning, lubrication and adjustment of drive chain at every 2000 kms.
  • Page 36 5. Remove centrifugal filter cover (6) & clean the centrifugal filter (7) with non flammable or high flash point solvent 1. Drain the engine oil throughly (page (kerosene). 18-19). 6. Reinstall the centrifugal filter cover, 2. Disconnect the clutch cable (1), remove right crankcase cover and connect the the kick start pedal (2) and kick stopper clutch cable.
  • Page 37 0.8-0.9 mm (1) Noise suppressor cap (2) Spark plug Recommended plug : NGK-CPR 8 EA 9 number, consult Authorised Hero MotoCorp workshop on this if required. 1. Clean dirt around the spark plug base. Tighten a new spark-plug 1/2 turn 2.
  • Page 38 The air cleaner element is of Dry Paper Pleated type it should be serviced at regular intervals (page 31). When riding in dusty areas, more frequent service may be necessary. Remove the seat assembly (page 17). Remove the side cover (1) by removing side cover screws (2).
  • Page 39 Air Cleaner Cleaning Remove the air cleaner element (6). Never wash the paper filter. Only blow air Clean the element by tapping it lightly in the air cleaner element for cleaning to loosen dust. dust, as explained. Replace air cleaner Blow away the remaining dust by element every 12000 kms.
  • Page 40 (2) Grommet (3) Lock nut (4) Adjuster Slide the grommet (2), loosen the lock nut (3) and turn the adjuster (4). If required adjust the free play by turning the adjuster. Direction A - to decrease the free play NOTE Direction B - to increase the free play The checking or adjusting of valve clearance should be performed while the...
  • Page 41 This condition can be determined by moving the rocker arms. If they are free, it is an indication that the valves are closed and the piston is in compression stroke. If they are tight the valves are open, rotate the flywheel 360 anticlockwise and re-align the 'T' mark with the index mark.
  • Page 42 After tightening the lock nut (6), check the clearance again. Do not attempt to compensate for faults in other systems by adjusting idle speed. Visit your Authorised Hero NOTE MotoCorp workshop for scheduled Before inserting the feeler gauge, smear a carburetor adjustment.
  • Page 43 r/min r/min...
  • Page 44 (3) Lock nut (4) Clutch cable adjuster nut (A) Decrease free play (B) Increase free play Turn the engine "OFF". park the If proper adjustment cannot be obtained or the clutch does not work correctly, visit your Authorised Hero MotoCorp workshop.
  • Page 45 (1) Drive chain (2) Hole cap (3) Drive chain slack Turn the chain to view chain lock plate (4) inside the hole. Ensure that the chain lock plate open end (5) is installed in the Adjustment opposite direction of the chain rotation. Park the motorcycle on its main Inspect the sprocket teeth for wear or stand with the transmission in neutral...
  • Page 46 Align the chain adjuster index mark (5) with the rear edge (6) of the adjusting slots on both sides of the swing arm equally. If the drive chain slack is excessive when the rear axle is moved to the furthest limit of adjustment, the drive chain is worn and must be replaced.

  • Page 47: Front Brake

    (3) caliper (4) and the disc (5) by using a water jet. FRONT BRAKE Always contact your Authorised Hero Refer to the safety precautions on page 29. MotoCorp workshop for refilling of Master Cylinder (1) master cylinder when necessary.

  • Page 48: Rear Brake

    Free play (2) should be 20-30 mm. If either pad is worn to the bottom of the grooves replace both pads as a set. Visit your Authorised Hero MotoCorp workshop for this service. (A) CUT-OUT NOT SEATED (B) CUT-OUT SEATED...
  • Page 50 Check the wear indicator grooves (6) in each pad. Reservoir If either pad is worn to the bottom of the grooves, replace both as a set. Visit your Authorised Hero MotoCorp workshop for this service. NOTE : Clean the dirt and mud accumulation between...
  • Page 51 NOTE : BATTERY This symbol on the battery means Refer to the safety precautions on (page 29). that this product must not be Location treated as household waste. The battery (1) is located behind the right This symbol on the battery means side cover.
  • Page 52 Battery charging Always visit your Authorised HeroMotoCorp workshop if you see any symptom of battery discharge as earliest as possible to get the battery charged. The battery has a tendency to discharge rapidly if additional electrical accessories are fitted on the motorcycle. Battery storage 1.

  • Page 53: Fuse Replacement

    FUSE REPLACEMENT Refer to the safety precautions on (page 29). Fuse Box (A) Location : Below the seat Fuse Type : Blade fuse In circuit fuse : (1) 15A, 10A Spare fuse : (2) 15A, 10A Never use a fuse with a different rating from that specified.

  • Page 54: Stop Lamp Switch

    STOP LAMP SWITCH HEADLAMP ADJUSTMENT Headlamp is preset. However in case of The stop lamp switch (1) must be adjusted adjustment required, please follow the so that stop lamp glows when rear brake is steps as given below: applied. Rear brake free play (page 45) should be adjusted before performing stop 1.
  • Page 55 NOTE Always adjust both the rear shock • Check the front forks by locking the absorber to the same position. Use the rear front brake and pumping the front fork shock absorber adjustment tool (1) up and down vigorously. The suspension available in the tool kit.

  • Page 56: Front Wheel Removal

    FRONT WHEEL REMOVAL FRONT WHEEL INSTALLATION Refer to the safety precautions on (page 29). 1. Install the side collar (1) to the right side 1. Support the motorcycle securely on the of the wheel hub and then install the main stand and raise the front wheel off speed sensor (2) on the left side of the the ground.

  • Page 57: Rear Wheel Removal

    REAR WHEEL REMOVAL Drum type 1. Raise the rear wheel off the ground. Axle nut torque : 6.8 kgf-m 2. Remove the rear brake adjusting nut (1) Brake stopper arm nut torque : 2.2 kgf-m and disconnect the brake rod (2) from the 45-46).

  • Page 58: Rear Wheel Installation

    6. Install the washer (6) and tighten the REAR WHEEL INSTALLATION rear axle nut (7) to the specified torque. 1. Install the side collar (1) to the right side TORQUE : 6.8 kgf-m of the wheel hub. 2. Tilt the motorcycle and position the rear wheel between the swingarm.
  • Page 59 This motorcycle is equipped with a catalytic converter in the silencer (muffler) to meet the emission norms. headlamp Our authorised dealership take all above mentioned precautions like recommended detergents and usage of muffler caps/plugs during wash to ensure quality wash. Do not put water inside the muffler during washing.
  • Page 60 Further to meet emission standards this motorcycle is provided with the air suction valve. Air Suction Valve (1) supplies fresh air from the air filter to the exhaust manifold to convert carbon monoxide to carbon dioxide. This reduces the CO% in the vehicles exhaust.
  • Page 61 Check fuel valve position Consult Authorised Hero MotoCorp Workshop ELECTRIC Consult Authorised Hero MotoCorp Workshop Consult Authorised Hero MotoCorp Workshop...
  • Page 62 Consult Authorised Hero MotoCorp Workshop Consult Authorised Hero MotoCorp Workshop...
  • Page 63 Improper functioning Consult Authorised Hero MotoCorp Workshop Consult Authorised Hero MotoCorp Workshop...
  • Page 64 Consult Authorised Hero MotoCorp Workshop Consult Authorised Hero MotoCorp Workshop...
  • Page 67 5 years or 70000 Km, whichever is earlier, from the date of purchase. It is advised that the purchaser avails all free and paid services from the Hero MotoCorp’s authorized workshop as per the recommended schedule, to be eligible for warranty benefits.
  • Page 68 (5) If Hunk vehicle has been used in any competitive events like races or rallies or for any commercial purposes as taxi etc. (6) To any damage on vehicle's painted surface cropping due to industrial pollution or other external factors.
  • Page 69 Hero MotoCorp Ltd. BATTERY WARRANTY PERIOD 1. 18 months from date of sale of vehicle or 20000 km. or 2. 21 months from the date of charging (whichever is earlier). 3. 3 months idle period is allowed from the date of charging to date of sale on vehicle.

  • Page 70: Emission Warranty

    (s) which is/are considered to be the cause of non-compliance with the emission standards. The emission warranty shall be applicable only to those vehicles, which are being regularly maintained at Hero MotoCorp Authorised Dealers/Service Points in accordance with the maintenance schedule provided in the owner's manual.
  • Page 71 WHAT ARE THE BENEFITS OF HERO MOTOCORP GENUINE SPARE PARTS ? 4Assures long life 4Ensures economy for a long time 4Safety of vehicle and rider 4Peace of mind 4Value for money 4Assured quality...
  • Page 72 CONSEQUENTIAL DAMAGES ON USING NON-GENUINE PARTS Clutch Plate Material used is inferior Damages other parts of clutch like, clutch center and outer clutch Affects fuel efficiency Poor acceleration Cam Chain Kit Poor performance Reduced life Gasket Cylinder Head Improper sealing Engine knocking Leads to leakage and smoky exhaust Higher emission level...
  • Page 73 CONSEQUENTIAL DAMAGES ON USING NON-GENUINE PARTS Element Air Cleaner Improper air filtration resulting in premature engine failure Affects fuel efficiency Poor engine performance Spark Plug Frequent stalling of engine Higher emission level Poor engine performance Affects fuel efficiency Poor braking effeciency Brake Pads / Shoes Rider safety - an issue Discs / Drum wear out, resulting in subsequent repair cost...
  • Page 74 Hero MotoCorp Ltd., 3rd Floor, Tower-A, DLF Centre Court, Sector-42, Golf Course Road, DLF Phase 5, Gurgaon -122002, Haryana, India. Tel: 0124-4754800, E-mail: delhi@heromotocorp.com Hero MotoCorp Ltd., 602, 6th Floor, Office Tower-1, Plot No BW58, Logix City Center, Sector-32, Noida – 201301. Tel: 0120-4631000, E-mail: noida@heromotocorp.com Hero MotoCorp Ltd., S.C.O-367-368, First Floor, Sector-34A, Chandigarh-160022, India.
  • Page 75 ZONAL/REGIONAL/AREA OFFICES NORTH ZONE Hero MotoCorp Ltd., Summit Building (10th Floor) Plot No TCG 3/3 Vibhuti Khand, Gomti Nagar Lucknow – 226010, India. Tel: 0522-4006594, E-mail: lucknow@heromotocorp.com Hero MotoCorp Ltd., C-19/134-B ,Third Floor I .P Grand, Lallapura, Sigra , Varanasi, Uttar Pradesh - 221010, India.

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