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

GTS 125

Library entry covers 2007-2024

30 factory 48 guideline

Published source

Vespa GTS 125 Owner's Manual (carburetor version), Scheduled maintenance table pp.78-86 (ManualsLib)

Factory source. Covers Vespa GTS 125 owner's manual, carbureted edition (technical data lists a Keihin CVK30 carburetor); no year printed in the pages read. Later fuel-injected GTS 125 versions are not covered.

78 items for a 2016 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: 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: Disc, hydraulic
Rear brake: Disc, hydraulic
Wheels: Cast / alloy, tubeless
Sidecar: No sidecar

Maintenance schedule

2016 Vespa GTS 125

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

Every 1,600 km or 6 months

1 item

Inspect tire tread, sidewalls and date codes

Wheels and tires

Guideline

Every 3,000 km

1 item

Engine oil level (check/top up)

Engine

Factory

Factory: Scheduled maintenance table (owner manual pp.78-86): every 3000 km. The table is printed as service lists: after 1000 km; every 3000 km; after 6000 km; at 12000 and 60000 km; at 18000 and 54000 km; at 24000 and 48000 km; at 30000, 42000 and 66000 km; at 36000 km; at 72000 km; every 2 years. Interval shown is the repeat that the lists follow.

Every 5,000 km or 12 months

8 items

Check throttle cable(s) free play and return

Fuel and air

Guideline
Adjust automatic / semi-automatic clutch

Primary and gearbox

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

10 items

Coolant level (check)

Engine

Factory

Factory: Scheduled maintenance table (owner manual pp.78-86): at every list from 6000 km on. The table is printed as service lists: after 1000 km; every 3000 km; after 6000 km; at 12000 and 60000 km; at 18000 and 54000 km; at 24000 and 48000 km; at 30000, 42000 and 66000 km; at 36000 km; at 72000 km; every 2 years. Interval shown is the repeat that the lists follow.
Engine oil (replace)

Engine

Factory

Factory: Scheduled maintenance table (owner manual pp.78-86): at 1000 km, then at every list from 6000 km on. Most lists print two lines, "Engine oil - replacement" and "Engine oil - change". The table is printed as service lists: after 1000 km; every 3000 km; after 6000 km; at 12000 and 60000 km; at 18000 and 54000 km; at 24000 and 48000 km; at 30000, 42000 and 66000 km; at 36000 km; at 72000 km; every 2 years. Interval shown is the repeat that the lists follow.
Hub oil level (check)

Engine

Factory

Factory: Scheduled maintenance table (owner manual pp.78-86): at the 6000-km-step services when the hub oil is not changed. The table is printed as service lists: after 1000 km; every 3000 km; after 6000 km; at 12000 and 60000 km; at 18000 and 54000 km; at 24000 and 48000 km; at 30000, 42000 and 66000 km; at 36000 km; at 72000 km; every 2 years. Interval shown is the repeat that the lists follow.
Variable speed rollers / sliding blocks (check or replace)

Engine

Factory

Factory: Scheduled maintenance table (owner manual pp.78-86): at every list from 6000 km on. The table is printed as service lists: after 1000 km; every 3000 km; after 6000 km; at 12000 and 60000 km; at 18000 and 54000 km; at 24000 and 48000 km; at 30000, 42000 and 66000 km; at 36000 km; at 72000 km; every 2 years. Interval shown is the repeat that the lists follow.
Air filter (clean)

Fuel and air

Factory

Factory: Scheduled maintenance table (owner manual pp.78-86): at every list from 6000 km on. The table is printed as service lists: after 1000 km; every 3000 km; after 6000 km; at 12000 and 60000 km; at 18000 and 54000 km; at 24000 and 48000 km; at 30000, 42000 and 66000 km; at 36000 km; at 72000 km; every 2 years. Interval shown is the repeat that the lists follow.
Electrical system and battery (check)

Ignition and electrics

Factory

Factory: Scheduled maintenance table (owner manual pp.78-86): at 1000 km, then at every list from 6000 km on. The table is printed as service lists: after 1000 km; every 3000 km; after 6000 km; at 12000 and 60000 km; at 18000 and 54000 km; at 24000 and 48000 km; at 30000, 42000 and 66000 km; at 36000 km; at 72000 km; every 2 years. Interval shown is the repeat that the lists follow.
Brake fluid level (check)

Brakes

Factory

Factory: Scheduled maintenance table (owner manual pp.78-86): at 1000 km, then at every list from 6000 km on. The table is printed as service lists: after 1000 km; every 3000 km; after 6000 km; at 12000 and 60000 km; at 18000 and 54000 km; at 24000 and 48000 km; at 30000, 42000 and 66000 km; at 36000 km; at 72000 km; every 2 years. Interval shown is the repeat that the lists follow.
Brake pads (check condition and wear)

Brakes

Factory

Factory: Scheduled maintenance table (owner manual pp.78-86): at 1000 km, then at every list from 6000 km on. The table is printed as service lists: after 1000 km; every 3000 km; after 6000 km; at 12000 and 60000 km; at 18000 and 54000 km; at 24000 and 48000 km; at 30000, 42000 and 66000 km; at 36000 km; at 72000 km; every 2 years. Interval shown is the repeat that the lists follow.
Vehicle and brake test (road test)

Brakes

Factory

Factory: Scheduled maintenance table (owner manual pp.78-86): at 1000 km, then at every list from 6000 km on. The table is printed as service lists: after 1000 km; every 3000 km; after 6000 km; at 12000 and 60000 km; at 18000 and 54000 km; at 24000 and 48000 km; at 30000, 42000 and 66000 km; at 36000 km; at 72000 km; every 2 years. Interval shown is the repeat that the lists follow.
Tire pressure and wear (check)

Wheels and tires

Factory

Factory: Scheduled maintenance table (owner manual pp.78-86): at 1000 km, then at every list from 6000 km on. The table is printed as service lists: after 1000 km; every 3000 km; after 6000 km; at 12000 and 60000 km; at 18000 and 54000 km; at 24000 and 48000 km; at 30000, 42000 and 66000 km; at 36000 km; at 72000 km; every 2 years. Interval shown is the repeat that the lists follow.

Every 6,500 km or 12 months

2 items

Inspect, clean and gap spark plugs

Engine

Guideline
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.

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

Inspect coolant hoses and clamps

Engine

Guideline
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 12,000 km

11 items

Driven pulley roller casing (grease)

Engine

Factory

Factory: Scheduled maintenance table (owner manual pp.78-86): at 12000, 24000, 36000, 48000, 60000 and 72000 km. The table is printed as service lists: after 1000 km; every 3000 km; after 6000 km; at 12000 and 60000 km; at 18000 and 54000 km; at 24000 and 48000 km; at 30000, 42000 and 66000 km; at 36000 km; at 72000 km; every 2 years. Interval shown is the repeat that the lists follow.
Driving belt (replace)

Engine

Factory

Factory: Scheduled maintenance table (owner manual pp.78-86): at 12000, 24000, 36000, 48000, 60000 and 72000 km; check at 6000, 18000, 30000, 42000, 54000 and 66000 km. The table is printed as service lists: after 1000 km; every 3000 km; after 6000 km; at 12000 and 60000 km; at 18000 and 54000 km; at 24000 and 48000 km; at 30000, 42000 and 66000 km; at 36000 km; at 72000 km; every 2 years. Interval shown is the repeat that the lists follow.
Headlight (adjust)

Engine

Factory

Factory: Scheduled maintenance table (owner manual pp.78-86): at 12000, 24000, 36000, 48000, 60000 and 72000 km. The table is printed as service lists: after 1000 km; every 3000 km; after 6000 km; at 12000 and 60000 km; at 18000 and 54000 km; at 24000 and 48000 km; at 30000, 42000 and 66000 km; at 36000 km; at 72000 km; every 2 years. Interval shown is the repeat that the lists follow.
Idle speed (adjust)

Engine

Factory

Factory: Scheduled maintenance table (owner manual pp.78-86): at 1000 km, then at 12000, 24000, 36000, 48000, 60000 and 72000 km. The table is printed as service lists: after 1000 km; every 3000 km; after 6000 km; at 12000 and 60000 km; at 18000 and 54000 km; at 24000 and 48000 km; at 30000, 42000 and 66000 km; at 36000 km; at 72000 km; every 2 years. Interval shown is the repeat that the lists follow.
Safety locks (check)

Engine

Factory

Factory: Scheduled maintenance table (owner manual pp.78-86): at 1000 km, then at 12000, 24000, 36000, 48000, 60000 and 72000 km. The table is printed as service lists: after 1000 km; every 3000 km; after 6000 km; at 12000 and 60000 km; at 18000 and 54000 km; at 24000 and 48000 km; at 30000, 42000 and 66000 km; at 36000 km; at 72000 km; every 2 years. Interval shown is the repeat that the lists follow.
Spark plug (replace)

Engine

Factory

Factory: Scheduled maintenance table (owner manual pp.78-86): at 12000, 24000, 36000, 48000, 60000 and 72000 km; electrode gap check at 6000, 18000, 30000, 42000, 54000 and 66000 km. The table is printed as service lists: after 1000 km; every 3000 km; after 6000 km; at 12000 and 60000 km; at 18000 and 54000 km; at 24000 and 48000 km; at 30000, 42000 and 66000 km; at 36000 km; at 72000 km; every 2 years. Interval shown is the repeat that the lists follow.
Suspensions (check)

Engine

Factory

Factory: Scheduled maintenance table (owner manual pp.78-86): at 12000, 24000, 36000, 48000, 60000 and 72000 km. The table is printed as service lists: after 1000 km; every 3000 km; after 6000 km; at 12000 and 60000 km; at 18000 and 54000 km; at 24000 and 48000 km; at 30000, 42000 and 66000 km; at 36000 km; at 72000 km; every 2 years. Interval shown is the repeat that the lists follow.
Transmission elements (lubricate)

Primary and gearbox

Factory

Factory: Scheduled maintenance table (owner manual pp.78-86): at 12000, 24000, 36000, 48000, 60000 and 72000 km. The table is printed as service lists: after 1000 km; every 3000 km; after 6000 km; at 12000 and 60000 km; at 18000 and 54000 km; at 24000 and 48000 km; at 30000, 42000 and 66000 km; at 36000 km; at 72000 km; every 2 years. Interval shown is the repeat that the lists follow.
Steering (adjust)

Front end

Factory

Factory: Scheduled maintenance table (owner manual pp.78-86): at 1000 km, then at 12000, 24000, 36000, 48000, 60000 and 72000 km. The table is printed as service lists: after 1000 km; every 3000 km; after 6000 km; at 12000 and 60000 km; at 18000 and 54000 km; at 24000 and 48000 km; at 30000, 42000 and 66000 km; at 36000 km; at 72000 km; every 2 years. Interval shown is the repeat that the lists follow.
Brake control levers (grease)

Brakes

Factory

Factory: Scheduled maintenance table (owner manual pp.78-86): at 1000 km, then at 12000, 24000, 36000, 48000, 60000 and 72000 km. The table is printed as service lists: after 1000 km; every 3000 km; after 6000 km; at 12000 and 60000 km; at 18000 and 54000 km; at 24000 and 48000 km; at 30000, 42000 and 66000 km; at 36000 km; at 72000 km; every 2 years. Interval shown is the repeat that the lists follow.
Throttle lever (adjust)

Controls and cables

Factory

Factory: Scheduled maintenance table (owner manual pp.78-86): at 1000 km, then at 12000, 24000, 36000, 48000, 60000 and 72000 km. The table is printed as service lists: after 1000 km; every 3000 km; after 6000 km; at 12000 and 60000 km; at 18000 and 54000 km; at 24000 and 48000 km; at 30000, 42000 and 66000 km; at 36000 km; at 72000 km; every 2 years. Interval shown is the repeat that the lists follow.

Every 13,000 km or 2 years

1 item

Check and adjust valve clearances

Engine

Guideline

Every 16,000 km or 2 years

2 items

Compression test (or leak-down)

Engine

Guideline
Change gearbox oil

Primary and gearbox

Guideline

Every 18,000 km

1 item

Radiator (external cleaning/check)

Engine

Factory

Factory: Scheduled maintenance table (owner manual pp.78-86): at 18000, 36000, 54000 and 72000 km. The table is printed as service lists: after 1000 km; every 3000 km; after 6000 km; at 12000 and 60000 km; at 18000 and 54000 km; at 24000 and 48000 km; at 30000, 42000 and 66000 km; at 36000 km; at 72000 km; every 2 years. Interval shown is the repeat that the lists follow.

Every 19,500 km or 2 years

4 items

Replace air filter element

Fuel and air

Guideline
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 19,500 km 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 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

2 items

Hub oil (change)

Engine

Factory

Factory: Scheduled maintenance table (owner manual pp.78-86): at 1000 km, then at 24000, 48000 and 72000 km. The table is printed as service lists: after 1000 km; every 3000 km; after 6000 km; at 12000 and 60000 km; at 18000 and 54000 km; at 24000 and 48000 km; at 30000, 42000 and 66000 km; at 36000 km; at 72000 km; every 2 years. Interval shown is the repeat that the lists follow.
Valve clearance (check)

Engine

Factory

Factory: Scheduled maintenance table (owner manual pp.78-86): at 6000, 24000, 48000 and 72000 km. The table is printed as service lists: after 1000 km; every 3000 km; after 6000 km; at 12000 and 60000 km; at 18000 and 54000 km; at 24000 and 48000 km; at 30000, 42000 and 66000 km; at 36000 km; at 72000 km; every 2 years. Interval shown is the repeat that the lists follow.

Every 25,500 km or 4 years

1 item

Replace spark plugs

Engine

Guideline

Every 30,000 km

1 item

Oil filter (replace)

Engine

Factory

Factory: Scheduled maintenance table (owner manual pp.78-86): printed as "Oil filter - Replacement" in the 30000, 42000 and 66000 km list only (other lists print a second engine oil line instead). The table is printed as service lists: after 1000 km; every 3000 km; after 6000 km; at 12000 and 60000 km; at 18000 and 54000 km; at 24000 and 48000 km; at 30000, 42000 and 66000 km; at 36000 km; at 72000 km; every 2 years. Interval shown is the repeat that the lists follow.

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 36,000 km

1 item

Brake fluid hoses (replace)

Brakes

Factory

Factory: Scheduled maintenance table (owner manual pp.78-86): at 36000 and 72000 km. The table is printed as service lists: after 1000 km; every 3000 km; after 6000 km; at 12000 and 60000 km; at 18000 and 54000 km; at 24000 and 48000 km; at 30000, 42000 and 66000 km; at 36000 km; at 72000 km; every 2 years. Interval shown is the repeat that the lists follow.

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 6 months

1 item

Clean battery terminals, check charge and strap

Ignition and electrics

Guideline

Every 2 years

7 items

Coolant (change)

Engine

Factory

Factory: Scheduled maintenance table (owner manual pp.78-86): every 2 years. The table is printed as service lists: after 1000 km; every 3000 km; after 6000 km; at 12000 and 60000 km; at 18000 and 54000 km; at 24000 and 48000 km; at 30000, 42000 and 66000 km; at 36000 km; at 72000 km; every 2 years. Interval shown is the repeat that the lists follow.
Replace coolant

Engine

Guideline
Secondary air filter, external and internal (clean)

Fuel and air

Factory

Factory: Scheduled maintenance table (owner manual pp.78-86): every 2 years. The table is printed as service lists: after 1000 km; every 3000 km; after 6000 km; at 12000 and 60000 km; at 18000 and 54000 km; at 24000 and 48000 km; at 30000, 42000 and 66000 km; at 36000 km; at 72000 km; every 2 years. Interval shown is the repeat that the lists follow.
Inspect wiring, bullet connectors and ground points

Ignition and electrics

Guideline
Inspect frame, welds and lugs for cracks

Rear suspension and frame

Guideline
Brake fluid (change)

Brakes

Factory

Factory: Scheduled maintenance table (owner manual pp.78-86): every 2 years. The table is printed as service lists: after 1000 km; every 3000 km; after 6000 km; at 12000 and 60000 km; at 18000 and 54000 km; at 24000 and 48000 km; at 30000, 42000 and 66000 km; at 36000 km; at 72000 km; every 2 years. Interval shown is the repeat that the lists follow.
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.