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Hero · Overhead-cam four-stroke single, wet sump, gearbox shares engine oil, chain drive

Hunk (149 cc)

Library entry covers 2012-2015

35 factory 49 guideline

Published source

Hero MotoCorp HUNK owner's manual, Maintenance Schedule printed pp.29-31 (ManualsLib)

Factory owner's handbook. Covers Hero HUNK owner's manual (ManualsLib copy); no year is printed, so the model years it covers are not stated.

84 items for a 2014 model, grouped by interval the way a factory chart is laid out.

How this bike is built (what the schedule is based on)

Engine cycle: Four-stroke
Engine lubrication: Wet sump (oil in crankcase)
Oil filtration: Replaceable cartridge or spin-on filter
Valve gear: Overhead cam, screw/locknut adjusters
Ignition: Electronic (CDI / transistor / ECU)
Charging: Alternator / stator with rectifier
Battery: Wet cell (flooded lead-acid, needs topping up)
Fuel system: Single carburetor
Cooling: Air / oil cooled
Primary drive: Gear or chain inside engine, shares engine oil
Gearbox oil: Shares engine oil
Clutch control: Hand lever, cable
Final drive: Chain
Front suspension: Telescopic fork
Rear suspension: Swingarm, twin shocks
Front brake: Disc, hydraulic
Rear brake: Drum (or band / belt rim)
Wheels: Cast / alloy, tubeless
Sidecar: No sidecar

Maintenance schedule

2014 Hero Hunk (149 cc)

On the road: every 300 km

1 item

Check engine oil level

Pre-ride / on the road

Guideline

Each fuel stop on old machines. Dry sump: check the tank hot, engine idling or just stopped, per your manual.

On the road: every 500 km

3 items

Check lights, horn, brake light switches

Pre-ride / on the road

Guideline
Check tire pressures

Pre-ride / on the road

Guideline
Lubricate drive chain

Pre-ride / on the road

Guideline

Lube warm, ideally at the end of the riding day so it soaks in overnight. Sooner after rain.

On the road: every 1,000 km

1 item

Check chain slack and rear wheel alignment

Pre-ride / on the road

Guideline

Every 1,600 km or 6 months

2 items

Adjust rear drum brake and rod / cable linkage

Brakes

Guideline
Inspect tire tread, sidewalls and date codes

Wheels and tires

Guideline

Every 2,000 km

1 item

Drive chain (inspect, clean, lubricate, adjust)

Final drive

Factory

Factory: Maintenance schedule (printed pp.29-31): 1st service at 500-750 km or 60 days, then every 3000 km or the next 90 days, to 30000 km (repeat at higher readings). I,C,L,A at every 2000 km at an authorised dealer. Key: I = inspect; C = clean; R = replace; A = adjust; L = lubricate; T = top up; E = emission check.

Every 3,000 km or 3 months

22 items

Bystarter operation (inspect)

Engine

Factory

Factory: Maintenance schedule (printed pp.29-31): 1st service at 500-750 km or 60 days, then every 3000 km or the next 90 days, to 30000 km (repeat at higher readings). I at every service. Key: I = inspect; C = clean; R = replace; A = adjust; L = lubricate; T = top up; E = emission check.
Electric starter (inspect)

Engine

Factory

Factory: Maintenance schedule (printed pp.29-31): 1st service at 500-750 km or 60 days, then every 3000 km or the next 90 days, to 30000 km (repeat at higher readings). I at every service. Key: I = inspect; C = clean; R = replace; A = adjust; L = lubricate; T = top up; E = emission check.
Front suspension (inspect)

Engine

Factory

Factory: Maintenance schedule (printed pp.29-31): 1st service at 500-750 km or 60 days, then every 3000 km or the next 90 days, to 30000 km (repeat at higher readings). I at every service. Key: I = inspect; C = clean; R = replace; A = adjust; L = lubricate; T = top up; E = emission check.
Headlamp focus (inspect, adjust)

Engine

Factory

Factory: Maintenance schedule (printed pp.29-31): 1st service at 500-750 km or 60 days, then every 3000 km or the next 90 days, to 30000 km (repeat at higher readings). I,A at every service. Key: I = inspect; C = clean; R = replace; A = adjust; L = lubricate; T = top up; E = emission check.
Nuts, bolts and fasteners (inspect)

Engine

Factory

Factory: Maintenance schedule (printed pp.29-31): 1st service at 500-750 km or 60 days, then every 3000 km or the next 90 days, to 30000 km (repeat at higher readings). I at every service; inspect and maintain specified torque. Key: I = inspect; C = clean; R = replace; A = adjust; L = lubricate; T = top up; E = emission check.
Oil circulation (inspect)

Engine

Factory

Factory: Maintenance schedule (printed pp.29-31): 1st service at 500-750 km or 60 days, then every 3000 km or the next 90 days, to 30000 km (repeat at higher readings). I at every service. Key: I = inspect; C = clean; R = replace; A = adjust; L = lubricate; T = top up; E = emission check.
Rear suspension (inspect)

Engine

Factory

Factory: Maintenance schedule (printed pp.29-31): 1st service at 500-750 km or 60 days, then every 3000 km or the next 90 days, to 30000 km (repeat at higher readings). I at every service; inspect for any play in the mounting bushes, replace if necessary. Key: I = inspect; C = clean; R = replace; A = adjust; L = lubricate; T = top up; E = emission check.
Spark plug (inspect, clean, adjust)

Engine

Factory

Factory: Maintenance schedule (printed pp.29-31): 1st service at 500-750 km or 60 days, then every 3000 km or the next 90 days, to 30000 km (repeat at higher readings). I,C,A at every service except 12000 and 24000 km. Key: I = inspect; C = clean; R = replace; A = adjust; L = lubricate; T = top up; E = emission check.
Stop lamp switch (inspect, adjust)

Engine

Factory

Factory: Maintenance schedule (printed pp.29-31): 1st service at 500-750 km or 60 days, then every 3000 km or the next 90 days, to 30000 km (repeat at higher readings). I,A at every service. Key: I = inspect; C = clean; R = replace; A = adjust; L = lubricate; T = top up; E = emission check.
Throttle operation (inspect, adjust)

Engine

Factory

Factory: Maintenance schedule (printed pp.29-31): 1st service at 500-750 km or 60 days, then every 3000 km or the next 90 days, to 30000 km (repeat at higher readings). I,A at every service. Key: I = inspect; C = clean; R = replace; A = adjust; L = lubricate; T = top up; E = emission check.
Valve clearance (inspect, adjust)

Engine

Factory

Factory: Maintenance schedule (printed pp.29-31): 1st service at 500-750 km or 60 days, then every 3000 km or the next 90 days, to 30000 km (repeat at higher readings). I,A at every service. Key: I = inspect; C = clean; R = replace; A = adjust; L = lubricate; T = top up; E = emission check.
Air cleaner drain tube (inspect, clean)

Fuel and air

Factory

Factory: Maintenance schedule (printed pp.29-31): 1st service at 500-750 km or 60 days, then every 3000 km or the next 90 days, to 30000 km (repeat at higher readings). I,C at every service; service more frequently when riding in rain or at full throttle. Key: I = inspect; C = clean; R = replace; A = adjust; L = lubricate; T = top up; E = emission check.
Fuel line (inspect)

Fuel and air

Factory

Factory: Maintenance schedule (printed pp.29-31): 1st service at 500-750 km or 60 days, then every 3000 km or the next 90 days, to 30000 km (repeat at higher readings). I at every service. Key: I = inspect; C = clean; R = replace; A = adjust; L = lubricate; T = top up; E = emission check.
Battery voltage (inspect)

Ignition and electrics

Factory

Factory: Maintenance schedule (printed pp.29-31): 1st service at 500-750 km or 60 days, then every 3000 km or the next 90 days, to 30000 km (repeat at higher readings). I at every service. Key: I = inspect; C = clean; R = replace; A = adjust; L = lubricate; T = top up; E = emission check.
Clutch (inspect, adjust)

Primary and gearbox

Factory

Factory: Maintenance schedule (printed pp.29-31): 1st service at 500-750 km or 60 days, then every 3000 km or the next 90 days, to 30000 km (repeat at higher readings). I,A at every service. Key: I = inspect; C = clean; R = replace; A = adjust; L = lubricate; T = top up; E = emission check.
Drive chain slider (inspect)

Final drive

Factory

Factory: Maintenance schedule (printed pp.29-31): 1st service at 500-750 km or 60 days, then every 3000 km or the next 90 days, to 30000 km (repeat at higher readings). I at every service from 3000 km. Key: I = inspect; C = clean; R = replace; A = adjust; L = lubricate; T = top up; E = emission check.
Side stand and main stand (lubricate)

Rear suspension and frame

Factory

Factory: Maintenance schedule (printed pp.29-31): 1st service at 500-750 km or 60 days, then every 3000 km or the next 90 days, to 30000 km (repeat at higher readings). L at every service. Key: I = inspect; C = clean; R = replace; A = adjust; L = lubricate; T = top up; E = emission check.
Side stand switch (inspect, clean)

Rear suspension and frame

Factory

Factory: Maintenance schedule (printed pp.29-31): 1st service at 500-750 km or 60 days, then every 3000 km or the next 90 days, to 30000 km (repeat at higher readings). I,C at every service. Key: I = inspect; C = clean; R = replace; A = adjust; L = lubricate; T = top up; E = emission check.
Brake fluid (inspect)

Brakes

Factory

Factory: Maintenance schedule (printed pp.29-31): 1st service at 500-750 km or 60 days, then every 3000 km or the next 90 days, to 30000 km (repeat at higher readings). I at every service; replace once in every two years or 30000 km, whichever is earlier. Key: I = inspect; C = clean; R = replace; A = adjust; L = lubricate; T = top up; E = emission check.
Brake shoe / pad wear (inspect, adjust)

Brakes

Factory

Factory: Maintenance schedule (printed pp.29-31): 1st service at 500-750 km or 60 days, then every 3000 km or the next 90 days, to 30000 km (repeat at higher readings). I,A at every service. Key: I = inspect; C = clean; R = replace; A = adjust; L = lubricate; T = top up; E = emission check.
Wheel bearings (inspect)

Wheels and tires

Factory

Factory: Maintenance schedule (printed pp.29-31): 1st service at 500-750 km or 60 days, then every 3000 km or the next 90 days, to 30000 km (repeat at higher readings). I at every service; inspect the bearings free play, replace if necessary. Key: I = inspect; C = clean; R = replace; A = adjust; L = lubricate; T = top up; E = emission check.
Wheels and tires (inspect)

Wheels and tires

Factory

Factory: Maintenance schedule (printed pp.29-31): 1st service at 500-750 km or 60 days, then every 3000 km or the next 90 days, to 30000 km (repeat at higher readings). I at every service. Key: I = inspect; C = clean; R = replace; A = adjust; L = lubricate; T = top up; E = emission check.

Every 5,000 km or 12 months

10 items

Check throttle cable(s) free play and return

Fuel and air

Guideline
Clean fuel tap filter / sediment bowl

Fuel and air

Guideline
Clean drive chain thoroughly (remove and soak, re-lube)

Final drive

Guideline

Non O-ring chains on old machines: remove, clean, soak in hot chain grease or lube, refit with the master link clip closed end leading.
Inspect chain and sprockets for wear (measure stretch)

Final drive

Guideline
Check steering head bearing adjustment

Front end

Guideline
Inspect fork seals, stanchions and fork boots

Front end

Guideline
Check footrests, pegs, rear brake and gear lever pivots

Rear suspension and frame

Guideline
Grease and check center / side stand and springs

Rear suspension and frame

Guideline
Check brake pads and discs

Brakes

Guideline
Check wheel bearings for play

Wheels and tires

Guideline

Every 6,000 km or 6 months

7 items

Engine oil (replace)

Engine

Factory

Factory: Maintenance schedule (printed pp.29-31): 1st service at 500-750 km or 60 days, then every 3000 km or the next 90 days, to 30000 km (repeat at higher readings). Oil change at the 1st service and every 6000 km; I,T (inspect, top up) at the services between. Replace engine oil once in every 6000 km; top up once in every 3000 km. The oil chapter (p.32) says every 6000 km or 6 months, whichever is earlier. Key: I = inspect; C = clean; R = replace; A = adjust; L = lubricate; T = top up; E = emission check.
Engine oil centrifugal filter (clean)

Engine

Factory

Factory: Maintenance schedule (printed pp.29-31): 1st service at 500-750 km or 60 days, then every 3000 km or the next 90 days, to 30000 km (repeat at higher readings). C at the 1st service and every 6000 km. Key: I = inspect; C = clean; R = replace; A = adjust; L = lubricate; T = top up; E = emission check.
Engine oil strainer screen (clean)

Engine

Factory

Factory: Maintenance schedule (printed pp.29-31): 1st service at 500-750 km or 60 days, then every 3000 km or the next 90 days, to 30000 km (repeat at higher readings). C at the 1st service and every 6000 km. Key: I = inspect; C = clean; R = replace; A = adjust; L = lubricate; T = top up; E = emission check.
Muffler (catalytic converter) (inspect, emission check)

Engine

Factory

Factory: Maintenance schedule (printed pp.29-31): 1st service at 500-750 km or 60 days, then every 3000 km or the next 90 days, to 30000 km (repeat at higher readings). I,E at 6000 km and every 6000 km. Key: I = inspect; C = clean; R = replace; A = adjust; L = lubricate; T = top up; E = emission check.
Secondary air injection (inspect)

Engine

Factory

Factory: Maintenance schedule (printed pp.29-31): 1st service at 500-750 km or 60 days, then every 3000 km or the next 90 days, to 30000 km (repeat at higher readings). I at 6000 km and every 6000 km. Key: I = inspect; C = clean; R = replace; A = adjust; L = lubricate; T = top up; E = emission check.
Engine idle speed / carburetor (clean, adjust)

Fuel and air

Factory

Factory: Maintenance schedule (printed pp.29-31): 1st service at 500-750 km or 60 days, then every 3000 km or the next 90 days, to 30000 km (repeat at higher readings). C,A at the 1st service and every 6000 km; A at the services between. Check idle CO emission along with idle rpm/idle CO adjustment if required. Key: I = inspect; C = clean; R = replace; A = adjust; L = lubricate; T = top up; E = emission check.
Brake system, brake cam and brake pedal (clean, lubricate)

Brakes

Factory

Factory: Maintenance schedule (printed pp.29-31): 1st service at 500-750 km or 60 days, then every 3000 km or the next 90 days, to 30000 km (repeat at higher readings). C,L at 3000 km and then every 6000 km (printed at 3000, 9000, 15000, 21000 and 27000 km). Key: I = inspect; C = clean; R = replace; A = adjust; L = lubricate; T = top up; E = emission check.

Every 6,500 km or 12 months

3 items

Inspect, clean and gap spark plugs

Engine

Guideline
Adjust clutch free play, lubricate cable and lever pivot

Primary and gearbox

Guideline
Lubricate brake cam spindles, check linings and drums

Brakes

Guideline

Every 8,000 km or 12 months

2 items

Change engine oil

Engine

Guideline

Pre-1970 machines: many owners run non-detergent or classic-spec oil with no filter, so short intervals matter. Dry sump: drain the tank and the crankcase/sump, flush the tank and clean the feed and return screens.
Replace oil filter

Engine

Guideline

Every 9,500 km or 12 months

7 items

Clean / inspect air filter

Fuel and air

Guideline

Mesh or oiled foam: clean and re-oil. Paper: blow out or replace. Some very early machines have no filter at all.
Clean carburetor float bowl(s), check float level and jets

Fuel and air

Guideline

Ethanol fuel varnishes old carbs quickly in storage.
Check charging voltage and regulator / cut-out

Ignition and electrics

Guideline
Check swingarm bushes for play

Rear suspension and frame

Guideline
Inspect rear shocks for leaks and damping

Rear suspension and frame

Guideline
Lubricate control cables and lever pivots

Controls and cables

Guideline
Lubricate speedometer / tachometer cables, check drive

Controls and cables

Guideline

A dry speedo cable whips the needle and eventually kills the instrument.

Every 12,000 km

2 items

Spark plug (replace)

Engine

Factory

Factory: Maintenance schedule (printed pp.29-31): 1st service at 500-750 km or 60 days, then every 3000 km or the next 90 days, to 30000 km (repeat at higher readings). R at 12000 and 24000 km. Key: I = inspect; C = clean; R = replace; A = adjust; L = lubricate; T = top up; E = emission check.
Steering head bearing (inspect, lubricate, adjust)

Front end

Factory

Factory: Maintenance schedule (printed pp.29-31): 1st service at 500-750 km or 60 days, then every 3000 km or the next 90 days, to 30000 km (repeat at higher readings). I or I,A at every service; I,L,A at 12000 and 24000 km. Key: I = inspect; C = clean; R = replace; A = adjust; L = lubricate; T = top up; E = emission check.

Every 13,000 km or 2 years

1 item

Check and adjust valve clearances

Engine

Guideline

Every 15,000 km

1 item

Air cleaner element (replace)

Fuel and air

Factory

Factory: Maintenance schedule (printed pp.29-31): 1st service at 500-750 km or 60 days, then every 3000 km or the next 90 days, to 30000 km (repeat at higher readings). R at 15000 and 30000 km; replace once in every 15000 km, earlier when riding in dusty areas. Do not open the element unless there is a drivability problem. Key: I = inspect; C = clean; R = replace; A = adjust; L = lubricate; T = top up; E = emission check.

Every 16,000 km or 2 years

1 item

Compression test (or leak-down)

Engine

Guideline

Every 19,500 km or 2 years

2 items

Replace air filter element

Fuel and air

Guideline
Grease swingarm pivot

Rear suspension and frame

Guideline

Every 20,000 km or 2 years

1 item

Front fork oil (replace)

Front end

Factory

Factory: Maintenance schedule (printed pp.29-31): 1st service at 500-750 km or 60 days, then every 3000 km or the next 90 days, to 30000 km (repeat at higher readings). Replace front fork oil once in every 2 years or 20000 km, whichever is earlier. Key: I = inspect; C = clean; R = replace; A = adjust; L = lubricate; T = top up; E = emission check.

Every 24,000 km or 3 years

1 item

Change fork oil

Front end

Guideline

Some early telescopic forks are grease filled or use very small oil quantities. Check your manual.

Every 24,000 km

1 item

Replace brake linings / skim drums (wear based)

Brakes

Guideline

Every 25,500 km or 4 years

1 item

Replace spark plugs

Engine

Guideline

Every 29,000 km

1 item

Replace chain and sprockets (wear based)

Final drive

Guideline

Every 30,000 km or 2 years

1 item

Brake fluid (replace)

Brakes

Factory

Factory: Maintenance schedule (printed pp.29-31): 1st service at 500-750 km or 60 days, then every 3000 km or the next 90 days, to 30000 km (repeat at higher readings). Replace once in every two years or 30000 km, whichever is earlier. Key: I = inspect; C = clean; R = replace; A = adjust; L = lubricate; T = top up; E = emission check.

Every 32,000 km or 4 years

2 items

Repack / replace steering head bearings

Front end

Guideline

Many old machines use loose balls in cups and cones. Taper roller conversions are common.
Repack / replace wheel bearings

Wheels and tires

Guideline

Cup-and-cone and taper roller hubs need periodic repacking and adjustment.

Every 40,000 km or 6 years

1 item

Replace swingarm bushes / bearings

Rear suspension and frame

Guideline

Every 48,500 km or 6 years

1 item

Rebuild forks: seals, bushes, springs

Front end

Guideline

Every 6 months

1 item

Clean battery terminals, check charge and strap

Ignition and electrics

Guideline

Every 2 years

3 items

Inspect wiring, bullet connectors and ground points

Ignition and electrics

Guideline
Inspect frame, welds and lugs for cracks

Rear suspension and frame

Guideline
Replace brake fluid

Brakes

Guideline

Every 4 years

3 items

Replace fuel lines

Fuel and air

Guideline

Old rubber and modern ethanol fuel do not mix well.
Inspect brake hoses; replace old rubber

Brakes

Guideline
Rebuild calipers and master cylinders (seals)

Brakes

Guideline

Every 6 years

1 item

Replace tires on age (regardless of tread)

Wheels and tires

Guideline

Guideline lines: Intervals here are general guidelines for the machine's era and layout, compiled for this app. They are not factory manual figures. Check your workshop manual, and edit any interval in the bike's Schedule tab.