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Honda · Overhead-cam four-stroke twin, wet sump, gearbox shares engine oil, chain drive

NM4 (670 cc)

Library entry covers 2015-2019

25 factory 34 guideline

Published source

Honda NM4 2018 Owner's Manual 31MJS630 (English, US), Maintenance Schedule pp.59-60

Factory owner's handbook. Covers NM4 (DCT); 2018 US-market (American Honda) owner's manual 31MJS630, English; table to 24,000 mi (38,400 km), repeat at the established frequency; Regular Replace column (1 Year oil, 3 Years coolant, 2 Years brake fluid), no annual check column.

Open the source

59 items for a 2015 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: Fuel injection
Cooling: Liquid cooled
Primary drive: Gear or chain inside engine, shares engine oil
Gearbox oil: Shares engine oil
Clutch control: Automatic or semi-automatic
Final drive: Chain
Front suspension: Telescopic fork
Rear suspension: Swingarm, single shock / cantilever
Front brake: Disc, hydraulic
Rear brake: Disc, hydraulic
Wheels: Cast / alloy, tubeless
Sidecar: No sidecar

Maintenance schedule

2015 Honda NM4 (670 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

2 items

Check lights, horn, brake light switches

Pre-ride / on the road

Guideline
Check tire pressures

Pre-ride / on the road

Guideline

On the road: every 800 km

1 item

Check coolant level

Pre-ride / on the road

Guideline

On the road: every 1,000 km

2 items

Check chain slack and rear wheel alignment

Pre-ride / on the road

Guideline
Lubricate drive chain

Pre-ride / on the road

Factory

Manual: Drive chain (inspect and lubricate). Factory: Printed as text: every 600 mi (1,000 km) inspect and lubricate

Every 5,000 km or 12 months

6 items

Adjust automatic / semi-automatic clutch

Primary and gearbox

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
Inspect fork seals, stanchions and fork boots

Front end

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

Rear suspension and frame

Guideline
Check wheel bearings for play

Wheels and tires

Guideline

Every 6,400 km

3 items

Check engine breather and oil return

Engine

Factory

Manual: Crankcase breather (clean). Factory: Clean every 4000 mi (6400 km), 4000-24000 mi; service more frequently when riding in rain or at full throttle
Brake lock operation (inspect)

Brakes

Factory

Factory: Inspect every 4000 mi (6400 km), 4000-24000 mi; no 600 mi mark; dealer item (intermediate)
Check brake pads and discs

Brakes

Factory

Manual: Brake pads wear (inspect). Factory: Inspect every 4000 mi (6400 km), 4000-24000 mi

Every 6,500 km or 12 months

1 item

Inspect, clean and gap spark plugs

Engine

Guideline

Every 9,500 km or 12 months

5 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.
Check charging voltage and regulator / cut-out

Ignition and electrics

Guideline
Check swingarm bushes for play

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 12,800 km or 12 months

1 item

Change engine oil

Engine

Factory

Manual: Engine oil (replace). Factory: Replace at 600 mi (1000 km), then 8000, 16000, 24000 mi (12800, 25600, 38400 km); Regular Replace 1 Year

Every 12,800 km

12 items

Engine idle speed (inspect)

Engine

Factory

Factory: Inspect at 8000, 16000, 24000 mi (12800, 25600, 38400 km); no 600 mi mark; dealer item (intermediate)
Headlight aim (inspect)

Engine

Factory

Factory: Inspect at 8000, 16000, 24000 mi (12800, 25600, 38400 km)
Inspect coolant hoses and clamps

Engine

Factory

Manual: Cooling system (inspect). Factory: Inspect at 8000, 16000, 24000 mi (12800, 25600, 38400 km); dealer item (intermediate)
Nuts, bolts, fasteners (inspect)

Engine

Factory

Factory: Inspect at 8000, 16000, 24000 mi (12800, 25600, 38400 km); no 600 mi mark; dealer item (intermediate)
Check throttle cable(s) free play and return

Fuel and air

Factory

Manual: Throttle operation (inspect). Factory: Inspect at 8000, 16000, 24000 mi (12800, 25600, 38400 km); dealer item (intermediate)
Replace fuel lines

Fuel and air

Factory

Manual: Fuel line (inspect). Factory: Inspect at 8000, 16000, 24000 mi (12800, 25600, 38400 km); dealer item (intermediate)
Check steering head bearing adjustment

Front end

Factory

Manual: Steering head bearings (inspect). Factory: Inspect at 8000, 16000, 24000 mi (12800, 25600, 38400 km); no 600 mi mark; dealer item (technical)
Grease and check center / side stand and springs

Rear suspension and frame

Factory

Manual: Side stand (inspect). Factory: Inspect at 8000, 16000, 24000 mi (12800, 25600, 38400 km)
Inspect rear shocks for leaks and damping

Rear suspension and frame

Factory

Manual: Suspension (inspect). Factory: Inspect at 8000, 16000, 24000 mi (12800, 25600, 38400 km); dealer item (intermediate)
Brake light switch (inspect)

Brakes

Factory

Factory: Inspect at 8000, 16000, 24000 mi (12800, 25600, 38400 km)
Brake system (inspect)

Brakes

Factory

Factory: Inspect at 8000, 16000, 24000 mi (12800, 25600, 38400 km)
Inspect tire tread, sidewalls and date codes

Wheels and tires

Factory

Manual: Wheels/tires (inspect). Factory: Inspect at 8000, 16000, 24000 mi (12800, 25600, 38400 km); dealer item (technical)

Every 16,000 km or 2 years

1 item

Compression test (or leak-down)

Engine

Guideline

Every 19,200 km

1 item

Replace air filter element

Fuel and air

Factory

Manual: Air cleaner (replace). Factory: Replace at 12000 and 24000 mi (19200, 38400 km); service more frequently when riding in unusually wet or dusty areas

Every 19,500 km or 2 years

3 items

Synchronize throttle bodies

Fuel and air

Guideline
Clean and grease rear suspension linkage

Rear suspension and frame

Guideline
Grease swingarm pivot

Rear suspension and frame

Guideline

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 25,600 km

4 items

Check and adjust valve clearances

Engine

Factory

Manual: Valve clearance (inspect). Factory: Inspect at 16000 mi (25600 km) only within the 24000 mi table; dealer item (intermediate)
Replace oil filter

Engine

Factory

Manual: Engine oil filter (replace). Factory: Replace at 600 mi (1000 km) and 16000 mi (25600 km)
Clutch oil filter (replace)

Primary and gearbox

Factory

Factory: Replace at 600 mi (1000 km) and 16000 mi (25600 km) (DCT)
Evaporative emission control system (inspect)

Controls and cables

Factory

Factory: Inspect at 16000 mi (25600 km) only within the 24000 mi table; 50 STATE (meets California) footnote; dealer item (intermediate)

Every 29,000 km

1 item

Replace chain and sprockets (wear based)

Final drive

Guideline

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 38,500 km or 4 years

1 item

Replace fuel filter

Fuel and air

Guideline

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 51,200 km

1 item

Replace spark plugs

Engine

Factory

Manual: Spark plug (replace). Factory: Printed as text: every 16,000 mi (25,600 km) inspect; every 32,000 mi (51,200 km) replace

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

Factory

Manual: Brake fluid (replace). Factory: Regular Replace 2 Years; inspect every 4000 mi (6400 km), 4000-24000 mi; replacement requires mechanical skill

Every 3 years

1 item

Replace coolant

Engine

Factory

Manual: Radiator coolant (replace). Factory: Regular Replace 3 Years (no R mark in the grid); inspect at 8000, 16000, 24000 mi (12800, 25600, 38400 km); replacement requires mechanical skill

Every 4 years

2 items

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.