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

Eco 150

Library entry covers 2024

29 factory 46 guideline

Published source

Hero Eco 150 Manual de Usuario (Hero Nicaragua), Programa de mantenimiento pp.27-28

Factory source. Covers Hero Eco 150 owner's manual (Spanish, Hero Nicaragua; variant R03 EH named on p.5); no year printed in the pages read.

75 items for a 2024 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: Drum (or band / stirrup)
Rear brake: Drum (or band / belt rim)
Wheels: Cast / alloy, tubeless
Sidecar: No sidecar

Maintenance schedule

2024 Hero Eco 150

On the road: every 200 mi

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 300 mi

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 600 mi

1 item

Check chain slack and rear wheel alignment

Pre-ride / on the road

Guideline

Every 1,000 mi or 6 months

3 items

Adjust front drum brake

Brakes

Guideline
Adjust rear drum brake and rod / cable linkage

Brakes

Guideline
Inspect tire tread, sidewalls and date codes

Wheels and tires

Guideline

Every 1,243 mi

1 item

Drive chain (inspect, clean, lubricate, adjust)

Final drive

Factory

Factory: Programa de mantenimiento (Hero Eco 150 owner manual, Spanish, Hero Nicaragua, printed pp.26-28; item names translated): every 2000 km. Columns as printed: service 1 at 500-750 km or days 1-60; then next services every 90 days at 3000-3500, 6000-6500 ... 30000-30500 km; repeat the frequency at higher readings. Key: I inspect, C clean, R replace, A adjust, L lubricate, O oil change, T top up. Each paid service within 90 days or 3000 km of the previous one, whichever comes first.

Every 1,864 mi or 3 months

21 items

Electric starter (inspect)

Engine

Factory

Factory: Programa de mantenimiento (Hero Eco 150 owner manual, Spanish, Hero Nicaragua, printed pp.26-28; item names translated): at every service (500 km, then every 3000 km or 90 days). Columns as printed: service 1 at 500-750 km or days 1-60; then next services every 90 days at 3000-3500, 6000-6500 ... 30000-30500 km; repeat the frequency at higher readings. Key: I inspect, C clean, R replace, A adjust, L lubricate, O oil change, T top up. Each paid service within 90 days or 3000 km of the previous one, whichever comes first.
Front suspension (inspect)

Engine

Factory

Factory: Programa de mantenimiento (Hero Eco 150 owner manual, Spanish, Hero Nicaragua, printed pp.26-28; item names translated): at every service (500 km, then every 3000 km or 90 days). Columns as printed: service 1 at 500-750 km or days 1-60; then next services every 90 days at 3000-3500, 6000-6500 ... 30000-30500 km; repeat the frequency at higher readings. Key: I inspect, C clean, R replace, A adjust, L lubricate, O oil change, T top up. Each paid service within 90 days or 3000 km of the previous one, whichever comes first.
Headlight (inspect and adjust)

Engine

Factory

Factory: Programa de mantenimiento (Hero Eco 150 owner manual, Spanish, Hero Nicaragua, printed pp.26-28; item names translated): at every service (500 km, then every 3000 km or 90 days). Columns as printed: service 1 at 500-750 km or days 1-60; then next services every 90 days at 3000-3500, 6000-6500 ... 30000-30500 km; repeat the frequency at higher readings. Key: I inspect, C clean, R replace, A adjust, L lubricate, O oil change, T top up. Each paid service within 90 days or 3000 km of the previous one, whichever comes first.
Nuts, bolts and fasteners (inspect and torque)

Engine

Factory

Factory: Programa de mantenimiento (Hero Eco 150 owner manual, Spanish, Hero Nicaragua, printed pp.26-28; item names translated): at every service (500 km, then every 3000 km or 90 days). Columns as printed: service 1 at 500-750 km or days 1-60; then next services every 90 days at 3000-3500, 6000-6500 ... 30000-30500 km; repeat the frequency at higher readings. Key: I inspect, C clean, R replace, A adjust, L lubricate, O oil change, T top up. Each paid service within 90 days or 3000 km of the previous one, whichever comes first.
Oil circulation (inspect)

Engine

Factory

Factory: Programa de mantenimiento (Hero Eco 150 owner manual, Spanish, Hero Nicaragua, printed pp.26-28; item names translated): at every service (500 km, then every 3000 km or 90 days). Columns as printed: service 1 at 500-750 km or days 1-60; then next services every 90 days at 3000-3500, 6000-6500 ... 30000-30500 km; repeat the frequency at higher readings. Key: I inspect, C clean, R replace, A adjust, L lubricate, O oil change, T top up. Each paid service within 90 days or 3000 km of the previous one, whichever comes first.
Rear suspension (inspect mounting bushes)

Engine

Factory

Factory: Programa de mantenimiento (Hero Eco 150 owner manual, Spanish, Hero Nicaragua, printed pp.26-28; item names translated): at every service (500 km, then every 3000 km or 90 days). Columns as printed: service 1 at 500-750 km or days 1-60; then next services every 90 days at 3000-3500, 6000-6500 ... 30000-30500 km; repeat the frequency at higher readings. Key: I inspect, C clean, R replace, A adjust, L lubricate, O oil change, T top up. Each paid service within 90 days or 3000 km of the previous one, whichever comes first.
Spark plug (inspect, clean, adjust)

Engine

Factory

Factory: Programa de mantenimiento (Hero Eco 150 owner manual, Spanish, Hero Nicaragua, printed pp.26-28; item names translated): at every service (500 km, then every 3000 km or 90 days); replace at 12000 and 24000 km. Columns as printed: service 1 at 500-750 km or days 1-60; then next services every 90 days at 3000-3500, 6000-6500 ... 30000-30500 km; repeat the frequency at higher readings. Key: I inspect, C clean, R replace, A adjust, L lubricate, O oil change, T top up. Each paid service within 90 days or 3000 km of the previous one, whichever comes first.
Throttle operation (inspect and adjust)

Engine

Factory

Factory: Programa de mantenimiento (Hero Eco 150 owner manual, Spanish, Hero Nicaragua, printed pp.26-28; item names translated): at every service (500 km, then every 3000 km or 90 days). Columns as printed: service 1 at 500-750 km or days 1-60; then next services every 90 days at 3000-3500, 6000-6500 ... 30000-30500 km; repeat the frequency at higher readings. Key: I inspect, C clean, R replace, A adjust, L lubricate, O oil change, T top up. Each paid service within 90 days or 3000 km of the previous one, whichever comes first.
Valve clearance (inspect and adjust)

Engine

Factory

Factory: Programa de mantenimiento (Hero Eco 150 owner manual, Spanish, Hero Nicaragua, printed pp.26-28; item names translated): at every service (500 km, then every 3000 km or 90 days). Columns as printed: service 1 at 500-750 km or days 1-60; then next services every 90 days at 3000-3500, 6000-6500 ... 30000-30500 km; repeat the frequency at higher readings. Key: I inspect, C clean, R replace, A adjust, L lubricate, O oil change, T top up. Each paid service within 90 days or 3000 km of the previous one, whichever comes first.
Air filter element (clean)

Fuel and air

Factory

Factory: Programa de mantenimiento (Hero Eco 150 owner manual, Spanish, Hero Nicaragua, printed pp.26-28; item names translated): clean at every service; replace at 12000 and 24000 km; more often in dusty areas. Columns as printed: service 1 at 500-750 km or days 1-60; then next services every 90 days at 3000-3500, 6000-6500 ... 30000-30500 km; repeat the frequency at higher readings. Key: I inspect, C clean, R replace, A adjust, L lubricate, O oil change, T top up. Each paid service within 90 days or 3000 km of the previous one, whichever comes first.
Carburetor idle / neutral (clean and adjust)

Fuel and air

Factory

Factory: Programa de mantenimiento (Hero Eco 150 owner manual, Spanish, Hero Nicaragua, printed pp.26-28; item names translated): clean and adjust at 500 km and every 6000 km; adjust at the services between. Columns as printed: service 1 at 500-750 km or days 1-60; then next services every 90 days at 3000-3500, 6000-6500 ... 30000-30500 km; repeat the frequency at higher readings. Key: I inspect, C clean, R replace, A adjust, L lubricate, O oil change, T top up. Each paid service within 90 days or 3000 km of the previous one, whichever comes first.
Fuel lines (inspect)

Fuel and air

Factory

Factory: Programa de mantenimiento (Hero Eco 150 owner manual, Spanish, Hero Nicaragua, printed pp.26-28; item names translated): at every service (500 km, then every 3000 km or 90 days). Columns as printed: service 1 at 500-750 km or days 1-60; then next services every 90 days at 3000-3500, 6000-6500 ... 30000-30500 km; repeat the frequency at higher readings. Key: I inspect, C clean, R replace, A adjust, L lubricate, O oil change, T top up. Each paid service within 90 days or 3000 km of the previous one, whichever comes first.
Battery (inspect)

Ignition and electrics

Factory

Factory: Programa de mantenimiento (Hero Eco 150 owner manual, Spanish, Hero Nicaragua, printed pp.26-28; item names translated): at every service (500 km, then every 3000 km or 90 days). Columns as printed: service 1 at 500-750 km or days 1-60; then next services every 90 days at 3000-3500, 6000-6500 ... 30000-30500 km; repeat the frequency at higher readings. Key: I inspect, C clean, R replace, A adjust, L lubricate, O oil change, T top up. Each paid service within 90 days or 3000 km of the previous one, whichever comes first.
Clutch (inspect and adjust)

Primary and gearbox

Factory

Factory: Programa de mantenimiento (Hero Eco 150 owner manual, Spanish, Hero Nicaragua, printed pp.26-28; item names translated): at every service (500 km, then every 3000 km or 90 days). Columns as printed: service 1 at 500-750 km or days 1-60; then next services every 90 days at 3000-3500, 6000-6500 ... 30000-30500 km; repeat the frequency at higher readings. Key: I inspect, C clean, R replace, A adjust, L lubricate, O oil change, T top up. Each paid service within 90 days or 3000 km of the previous one, whichever comes first.
Steering bearings (inspect; adjust; lubricate at 12000 and 24000 km)

Front end

Factory

Factory: Programa de mantenimiento (Hero Eco 150 owner manual, Spanish, Hero Nicaragua, printed pp.26-28; item names translated): at every service (500 km, then every 3000 km or 90 days). Columns as printed: service 1 at 500-750 km or days 1-60; then next services every 90 days at 3000-3500, 6000-6500 ... 30000-30500 km; repeat the frequency at higher readings. Key: I inspect, C clean, R replace, A adjust, L lubricate, O oil change, T top up. Each paid service within 90 days or 3000 km of the previous one, whichever comes first.
Main / side stand (lubricate)

Rear suspension and frame

Factory

Factory: Programa de mantenimiento (Hero Eco 150 owner manual, Spanish, Hero Nicaragua, printed pp.26-28; item names translated): at every service (500 km, then every 3000 km or 90 days). Columns as printed: service 1 at 500-750 km or days 1-60; then next services every 90 days at 3000-3500, 6000-6500 ... 30000-30500 km; repeat the frequency at higher readings. Key: I inspect, C clean, R replace, A adjust, L lubricate, O oil change, T top up. Each paid service within 90 days or 3000 km of the previous one, whichever comes first.
Brake light switch (inspect and adjust)

Brakes

Factory

Factory: Programa de mantenimiento (Hero Eco 150 owner manual, Spanish, Hero Nicaragua, printed pp.26-28; item names translated): at every service (500 km, then every 3000 km or 90 days). Columns as printed: service 1 at 500-750 km or days 1-60; then next services every 90 days at 3000-3500, 6000-6500 ... 30000-30500 km; repeat the frequency at higher readings. Key: I inspect, C clean, R replace, A adjust, L lubricate, O oil change, T top up. Each paid service within 90 days or 3000 km of the previous one, whichever comes first.
Brake shoes (inspect and adjust)

Brakes

Factory

Factory: Programa de mantenimiento (Hero Eco 150 owner manual, Spanish, Hero Nicaragua, printed pp.26-28; item names translated): at every service (500 km, then every 3000 km or 90 days). Columns as printed: service 1 at 500-750 km or days 1-60; then next services every 90 days at 3000-3500, 6000-6500 ... 30000-30500 km; repeat the frequency at higher readings. Key: I inspect, C clean, R replace, A adjust, L lubricate, O oil change, T top up. Each paid service within 90 days or 3000 km of the previous one, whichever comes first.
Wheel bearings (inspect free play)

Wheels and tires

Factory

Factory: Programa de mantenimiento (Hero Eco 150 owner manual, Spanish, Hero Nicaragua, printed pp.26-28; item names translated): at every service (500 km, then every 3000 km or 90 days). Columns as printed: service 1 at 500-750 km or days 1-60; then next services every 90 days at 3000-3500, 6000-6500 ... 30000-30500 km; repeat the frequency at higher readings. Key: I inspect, C clean, R replace, A adjust, L lubricate, O oil change, T top up. Each paid service within 90 days or 3000 km of the previous one, whichever comes first.
Wheels / tires (inspect)

Wheels and tires

Factory

Factory: Programa de mantenimiento (Hero Eco 150 owner manual, Spanish, Hero Nicaragua, printed pp.26-28; item names translated): at every service (500 km, then every 3000 km or 90 days). Columns as printed: service 1 at 500-750 km or days 1-60; then next services every 90 days at 3000-3500, 6000-6500 ... 30000-30500 km; repeat the frequency at higher readings. Key: I inspect, C clean, R replace, A adjust, L lubricate, O oil change, T top up. Each paid service within 90 days or 3000 km of the previous one, whichever comes first.
Choke lever operation (inspect)

Controls and cables

Factory

Factory: Programa de mantenimiento (Hero Eco 150 owner manual, Spanish, Hero Nicaragua, printed pp.26-28; item names translated): at every service (500 km, then every 3000 km or 90 days). Columns as printed: service 1 at 500-750 km or days 1-60; then next services every 90 days at 3000-3500, 6000-6500 ... 30000-30500 km; repeat the frequency at higher readings. Key: I inspect, C clean, R replace, A adjust, L lubricate, O oil change, T top up. Each paid service within 90 days or 3000 km of the previous one, whichever comes first.

Every 3,000 mi or 12 months

9 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 wheel bearings for play

Wheels and tires

Guideline

Every 3,728 mi

4 items

Centrifugal oil filter (clean)

Engine

Factory

Factory: Programa de mantenimiento (Hero Eco 150 owner manual, Spanish, Hero Nicaragua, printed pp.26-28; item names translated): at 500 km, then every 6000 km. Columns as printed: service 1 at 500-750 km or days 1-60; then next services every 90 days at 3000-3500, 6000-6500 ... 30000-30500 km; repeat the frequency at higher readings. Key: I inspect, C clean, R replace, A adjust, L lubricate, O oil change, T top up. Each paid service within 90 days or 3000 km of the previous one, whichever comes first.
Engine oil (change)

Engine

Factory

Factory: Programa de mantenimiento (Hero Eco 150 owner manual, Spanish, Hero Nicaragua, printed pp.26-28; item names translated): at 500 km, then every 6000 km; inspect and top up at the services between. Columns as printed: service 1 at 500-750 km or days 1-60; then next services every 90 days at 3000-3500, 6000-6500 ... 30000-30500 km; repeat the frequency at higher readings. Key: I inspect, C clean, R replace, A adjust, L lubricate, O oil change, T top up. Each paid service within 90 days or 3000 km of the previous one, whichever comes first.
Oil filter screen (clean)

Engine

Factory

Factory: Programa de mantenimiento (Hero Eco 150 owner manual, Spanish, Hero Nicaragua, printed pp.26-28; item names translated): at 500 km, then every 6000 km. Columns as printed: service 1 at 500-750 km or days 1-60; then next services every 90 days at 3000-3500, 6000-6500 ... 30000-30500 km; repeat the frequency at higher readings. Key: I inspect, C clean, R replace, A adjust, L lubricate, O oil change, T top up. Each paid service within 90 days or 3000 km of the previous one, whichever comes first.
Brake system cam and pedal (clean and lubricate)

Brakes

Factory

Factory: Programa de mantenimiento (Hero Eco 150 owner manual, Spanish, Hero Nicaragua, printed pp.26-28; item names translated): every 6000 km. Columns as printed: service 1 at 500-750 km or days 1-60; then next services every 90 days at 3000-3500, 6000-6500 ... 30000-30500 km; repeat the frequency at higher readings. Key: I inspect, C clean, R replace, A adjust, L lubricate, O oil change, T top up. Each paid service within 90 days or 3000 km of the previous one, whichever comes first.

Every 4,000 mi 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 5,000 mi 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 6,000 mi 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 7,456 mi

2 items

Spark plug (replace)

Engine

Factory

Factory: Programa de mantenimiento (Hero Eco 150 owner manual, Spanish, Hero Nicaragua, printed pp.26-28; item names translated): at 12000 and 24000 km. Columns as printed: service 1 at 500-750 km or days 1-60; then next services every 90 days at 3000-3500, 6000-6500 ... 30000-30500 km; repeat the frequency at higher readings. Key: I inspect, C clean, R replace, A adjust, L lubricate, O oil change, T top up. Each paid service within 90 days or 3000 km of the previous one, whichever comes first.
Air filter element (replace)

Fuel and air

Factory

Factory: Programa de mantenimiento (Hero Eco 150 owner manual, Spanish, Hero Nicaragua, printed pp.26-28; item names translated): at 12000 and 24000 km. Columns as printed: service 1 at 500-750 km or days 1-60; then next services every 90 days at 3000-3500, 6000-6500 ... 30000-30500 km; repeat the frequency at higher readings. Key: I inspect, C clean, R replace, A adjust, L lubricate, O oil change, T top up. Each paid service within 90 days or 3000 km of the previous one, whichever comes first.

Every 8,000 mi or 2 years

1 item

Check and adjust valve clearances

Engine

Guideline

Every 10,000 mi or 2 years

1 item

Compression test (or leak-down)

Engine

Guideline

Every 12,000 mi or 2 years

2 items

Replace air filter element

Fuel and air

Guideline
Grease swingarm pivot

Rear suspension and frame

Guideline

Every 15,000 mi 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 15,000 mi

1 item

Replace brake linings / skim drums (wear based)

Brakes

Guideline

Every 16,000 mi or 4 years

1 item

Replace spark plugs

Engine

Guideline

Every 18,000 mi

1 item

Replace chain and sprockets (wear based)

Final drive

Guideline

Every 18,641 mi or 2 years

1 item

Front suspension oil (replace)

Engine

Factory

Factory: Programa de mantenimiento (Hero Eco 150 owner manual, Spanish, Hero Nicaragua, printed pp.26-28; item names translated): every two years or 30000 km, whichever comes first. Columns as printed: service 1 at 500-750 km or days 1-60; then next services every 90 days at 3000-3500, 6000-6500 ... 30000-30500 km; repeat the frequency at higher readings. Key: I inspect, C clean, R replace, A adjust, L lubricate, O oil change, T top up. Each paid service within 90 days or 3000 km of the previous one, whichever comes first.

Every 20,000 mi 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 25,000 mi or 6 years

1 item

Replace swingarm bushes / bearings

Rear suspension and frame

Guideline

Every 30,000 mi 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

2 items

Inspect wiring, bullet connectors and ground points

Ignition and electrics

Guideline
Inspect frame, welds and lugs for cracks

Rear suspension and frame

Guideline

Every 4 years

1 item

Replace fuel lines

Fuel and air

Guideline

Old rubber and modern ethanol fuel do not mix well.

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.