Honda · Overhead-cam four-stroke single, wet sump, separate gearbox oil, CVT belt drive

Navi (109 cc)

Library entry covers 2017-2025

28 factory 38 guideline

Published source

Honda 2025 NAVI Owner's Manual (31K74A30), Maintenance Schedule pp.45-46

Factory owner's handbook. Covers 2025 manual (NAVI).

Open the source

66 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: Fuel injection
Cooling: Air / oil cooled
Primary drive: Gear or chain inside engine, shares engine oil
Gearbox oil: Separate gearbox oil
Clutch control: Automatic or semi-automatic
Final drive: Belt CVT, scooter automatic
Front suspension: Telescopic fork
Rear suspension: Swingarm, single shock / cantilever
Front brake: Drum (or band / stirrup)
Rear brake: Drum (or band / belt rim)
Wheels: Spoked, tubed
Sidecar: No sidecar

Maintenance schedule

2024 Honda Navi (109 cc)

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

2 items

Check lights, horn, brake light switches

Pre-ride / on the road

Guideline
Check tire pressures

Pre-ride / on the road

Guideline

Every 1,000 mi or 6 months

2 items

Adjust front drum brake

Brakes

Guideline
Adjust rear drum brake and rod / cable linkage

Brakes

Guideline

Every 2,500 mi or 6 months

1 item

Change engine oil

Engine

Factory

Manual: Engine Oil. Factory: Initial 600 mi (1,000 km)/1 month; Regular every 2,500 mi (4,000 km)/6 months. Cols 0.6/2.5/5/7.5/10/12.5/15

Every 2,500 mi

15 items

Check and adjust valve clearances

Engine

Factory

Manual: Valve Clearance. Factory: I every column incl. 0.6
Check engine breather and oil return

Engine

Factory

Manual: Crankcase Breather. Factory: C at 5, 7.5, 10, 12.5, 15
Choke Operation

Engine

Factory

Factory: I every column from 2.5
Engine Idle Speed

Engine

Factory

Factory: I every column incl. 0.6
Headlight Aim

Engine

Factory

Factory: I every column from 2.5
Suspension

Engine

Factory

Factory: I every column from 2.5
Check throttle cable(s) free play and return

Fuel and air

Factory

Manual: Throttle Operation. Factory: I every column from 2.5
Clean fuel tap filter / sediment bowl

Fuel and air

Factory

Manual: Fuel strainer screen. Factory: C every column from 2.5
Fuel Line

Fuel and air

Factory

Factory: I every column from 2.5 (x1000mi)
Grease and check center / side stand and springs

Rear suspension and frame

Factory

Manual: Side Stand. Factory: I every column from 2.5
Brake Light Switch

Brakes

Factory

Factory: I every column from 2.5
Brake Lock Operation

Brakes

Factory

Factory: I every column incl. 0.6
Brake Shoes Wear

Brakes

Factory

Factory: I every column from 2.5
Brake System

Brakes

Factory

Factory: I every column incl. 0.6
Inspect tire tread, sidewalls and date codes

Wheels and tires

Factory

Manual: Wheels/Tires. Factory: I every column from 2.5

Every 3,000 mi or 12 months

5 items

Adjust automatic / semi-automatic clutch

Primary and gearbox

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 spoke tension and wheel true

Wheels and tires

Guideline
Check wheel bearings for play

Wheels and tires

Guideline

Every 4,000 mi or 12 months

2 items

Inspect CVT drive belt, rollers / sliders and clutch shoes

Final drive

Guideline

Typical scooter interval. Your owner's manual figure governs; check belt width against the service limit.
Lubricate brake cam spindles, check linings and drums

Brakes

Guideline

Every 5,000 mi or 12 months

1 item

Replace oil filter

Engine

Guideline

Every 5,000 mi

5 items

Inspect, clean and gap spark plugs

Engine

Factory

Manual: Spark Plug. Factory: I at 2.5, 7.5, 12.5
Nuts, Bolts, Fasteners

Engine

Factory

Factory: I at 0.6, 5, 10, 15
Replace spark plugs

Engine

Factory

Manual: Spark Plug. Factory: R at 5, 10, 15
Clutch Shoes Wear

Primary and gearbox

Factory

Factory: I at 5, 10, 15
Inspect drive belt, pulleys and tension

Final drive

Factory

Manual: Drive Belt. Factory: I at 5, 10

Every 6,000 mi or 12 months

6 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
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 7,500 mi

3 items

Clean oil strainers / mesh screens

Engine

Factory

Manual: Engine Oil Strainer Screen. Factory: C at 7.5, 15
AI Air Cleaner

Fuel and air

Factory

Factory: C at 7.5, 15
Check steering head bearing adjustment

Front end

Factory

Manual: Steering Head Bearings. Factory: I at 0.6, 7.5, 15

Every 10,000 mi or 2 years

2 items

Compression test (or leak-down)

Engine

Guideline
Change gearbox oil

Primary and gearbox

Guideline

Every 10,000 mi

2 items

Secondary Air Supply System

Engine

Factory

Factory: I at 10
Replace air filter element

Fuel and air

Factory

Manual: Air Cleaner. Factory: R at 10

Every 12,000 mi 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 12,000 mi or 3 years

1 item

Replace CVT drive belt

Final drive

Guideline

Typical scooter interval, or sooner if the belt is cracked, glazed or below its width limit.

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

2 items

Replace drive belt (wear or damage based)

Final drive

Factory

Manual: Drive Belt. Factory: R at 15
Replace brake linings / skim drums (wear based)

Brakes

Guideline

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 24,000 mi or 4 years

1 item

Replace fuel filter

Fuel and air

Guideline

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

3 items

Inspect wiring, bullet connectors and ground points

Ignition and electrics

Guideline
Change final drive (rear drive) oil

Final drive

Factory

Manual: Final Drive Oil. Factory: Note 5: Replace every 2 years
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

2 items

Replace inner tubes and rim tape with tires

Wheels and tires

Guideline
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.