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

GTS 150

Library entry covers 2017-2020

32 factory 47 guideline

Published source

Vespa GTS ABS 125 i.e. Bedienungsanleitung (also covers the GTS 150), Tabelle Wartungsprogramm pp.96-99 (ManualsLib.de)

Factory owner's handbook. Covers Vespa GTS ABS 125 i.e. / 150 owner's manual, German edition (engine data printed for the 125 and 150 at pp.88-89); no model year confirmed on the pages read.

79 items for a 2020 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, twin shocks
Front brake: Disc, hydraulic
Rear brake: Disc, hydraulic
Wheels: Cast / alloy, tubeless
Sidecar: No sidecar

Maintenance schedule

2020 Vespa GTS 150

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 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 5,000 km

5 items

Diagnosis with instrument

Engine

Factory

Factory: Tabelle Wartungsprogramm (printed pp.96-97, translated from German), km x 1,000 columns 1 to 50: I at 1,000 km; I at 5,000 km; I at 10,000 km; I at 15,000 km; I at 20,000 km; I at 25,000 km; I at 30,000 km; I at 35,000 km; I at 40,000 km; I at 45,000 km; I at 50,000 km. Key: I = check and clean, adjust, lubricate or replace if necessary; C = clean; R = replace; A = adjust; L = lubricate. The first service is due at 1,000 km or within 6 months of registration; the annual service is due within 12 months of the last one if the distance is not reached.
Electrical system and battery (check)

Ignition and electrics

Factory

Factory: Tabelle Wartungsprogramm (printed pp.96-97, translated from German), km x 1,000 columns 1 to 50: I at 1,000 km; I at 5,000 km; I at 10,000 km; I at 15,000 km; I at 20,000 km; I at 25,000 km; I at 30,000 km; I at 35,000 km; I at 40,000 km; I at 45,000 km; I at 50,000 km. Key: I = check and clean, adjust, lubricate or replace if necessary; C = clean; R = replace; A = adjust; L = lubricate. The first service is due at 1,000 km or within 6 months of registration; the annual service is due within 12 months of the last one if the distance is not reached.
Brake fluid (check)

Brakes

Factory

Factory: Tabelle Wartungsprogramm (printed pp.96-97, translated from German), km x 1,000 columns 1 to 50: I at 1,000 km; I at 5,000 km; I at 10,000 km; I at 15,000 km; I at 20,000 km; I at 25,000 km; I at 30,000 km; I at 35,000 km; I at 40,000 km; I at 45,000 km; I at 50,000 km. Key: I = check and clean, adjust, lubricate or replace if necessary; C = clean; R = replace; A = adjust; L = lubricate. The first service is due at 1,000 km or within 6 months of registration; the annual service is due within 12 months of the last one if the distance is not reached.
Brake pads (check)

Brakes

Factory

Factory: Tabelle Wartungsprogramm (printed pp.96-97, translated from German), km x 1,000 columns 1 to 50: I at 5,000 km; I at 10,000 km; I at 15,000 km; I at 20,000 km; I at 25,000 km; I at 30,000 km; I at 35,000 km; I at 40,000 km; I at 45,000 km; I at 50,000 km. Key: I = check and clean, adjust, lubricate or replace if necessary; C = clean; R = replace; A = adjust; L = lubricate. The first service is due at 1,000 km or within 6 months of registration; the annual service is due within 12 months of the last one if the distance is not reached.
Tire pressure and wear (check)

Wheels and tires

Factory

Factory: Tabelle Wartungsprogramm (printed pp.96-97, translated from German), km x 1,000 columns 1 to 50: I at 1,000 km; I at 5,000 km; I at 10,000 km; I at 15,000 km; I at 20,000 km; I at 25,000 km; I at 30,000 km; I at 35,000 km; I at 40,000 km; I at 45,000 km; I at 50,000 km. Key: I = check and clean, adjust, lubricate or replace if necessary; C = clean; R = replace; A = adjust; L = lubricate. The first service is due at 1,000 km or within 6 months of registration; the annual service is due within 12 months of the last one if the distance is not reached.

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 10,000 km

18 items

Coolant level (check)

Engine

Factory

Factory: Tabelle Wartungsprogramm (printed pp.96-97, translated from German), km x 1,000 columns 1 to 50: I at 1,000 km; I at 10,000 km; I at 20,000 km; I at 40,000 km; I at 50,000 km; R at 30,000 km. Key: I = check and clean, adjust, lubricate or replace if necessary; C = clean; R = replace; A = adjust; L = lubricate. The first service is due at 1,000 km or within 6 months of registration; the annual service is due within 12 months of the last one if the distance is not reached.
Drive belt (check)

Engine

Factory

Factory: Tabelle Wartungsprogramm (printed pp.96-97, translated from German), km x 1,000 columns 1 to 50: I at 10,000 km; I at 30,000 km; I at 50,000 km. Key: I = check and clean, adjust, lubricate or replace if necessary; C = clean; R = replace; A = adjust; L = lubricate. The first service is due at 1,000 km or within 6 months of registration; the annual service is due within 12 months of the last one if the distance is not reached.
Engine oil (replace)

Engine

Factory

Factory: Tabelle Wartungsprogramm (printed pp.96-97, translated from German), km x 1,000 columns 1 to 50: R at 1,000 km; I at 5,000 km; R at 10,000 km; I at 15,000 km; R at 20,000 km; I at 25,000 km; R at 30,000 km; I at 35,000 km; R at 40,000 km; I at 45,000 km; R at 50,000 km. Key: I = check and clean, adjust, lubricate or replace if necessary; C = clean; R = replace; A = adjust; L = lubricate. The first service is due at 1,000 km or within 6 months of registration; the annual service is due within 12 months of the last one if the distance is not reached.
Engine oil filter (replace)

Engine

Factory

Factory: Tabelle Wartungsprogramm (printed pp.96-97, translated from German), km x 1,000 columns 1 to 50: R at 1,000 km; R at 10,000 km; R at 20,000 km; R at 30,000 km; R at 40,000 km; R at 50,000 km. Key: I = check and clean, adjust, lubricate or replace if necessary; C = clean; R = replace; A = adjust; L = lubricate. The first service is due at 1,000 km or within 6 months of registration; the annual service is due within 12 months of the last one if the distance is not reached.
Engine oil pre-filter (clean)

Engine

Factory

Factory: Tabelle Wartungsprogramm (printed pp.96-97, translated from German), km x 1,000 columns 1 to 50: C at 1,000 km; C at 10,000 km; C at 20,000 km; C at 30,000 km; C at 40,000 km; C at 50,000 km. Key: I = check and clean, adjust, lubricate or replace if necessary; C = clean; R = replace; A = adjust; L = lubricate. The first service is due at 1,000 km or within 6 months of registration; the annual service is due within 12 months of the last one if the distance is not reached.
Headlight setting (check)

Engine

Factory

Factory: Tabelle Wartungsprogramm (printed pp.96-97, translated from German), km x 1,000 columns 1 to 50: I at 10,000 km; I at 20,000 km; I at 30,000 km; I at 40,000 km; I at 50,000 km. Key: I = check and clean, adjust, lubricate or replace if necessary; C = clean; R = replace; A = adjust; L = lubricate. The first service is due at 1,000 km or within 6 months of registration; the annual service is due within 12 months of the last one if the distance is not reached.
Rear hub (final drive) oil (check)

Engine

Factory

Factory: Tabelle Wartungsprogramm (printed pp.96-97, translated from German), km x 1,000 columns 1 to 50: I at 10,000 km; I at 20,000 km; I at 40,000 km; I at 50,000 km; R at 30,000 km. Key: I = check and clean, adjust, lubricate or replace if necessary; C = clean; R = replace; A = adjust; L = lubricate. The first service is due at 1,000 km or within 6 months of registration; the annual service is due within 12 months of the last one if the distance is not reached.
Road test

Engine

Factory

Factory: Tabelle Wartungsprogramm (printed pp.96-97, translated from German), km x 1,000 columns 1 to 50: I at 1,000 km; I at 10,000 km; I at 20,000 km; I at 30,000 km; I at 40,000 km; I at 50,000 km. Key: I = check and clean, adjust, lubricate or replace if necessary; C = clean; R = replace; A = adjust; L = lubricate. The first service is due at 1,000 km or within 6 months of registration; the annual service is due within 12 months of the last one if the distance is not reached.
Roller container (check)

Engine

Factory

Factory: Tabelle Wartungsprogramm (printed pp.96-97, translated from German), km x 1,000 columns 1 to 50: I at 10,000 km; I at 20,000 km; I at 30,000 km; I at 40,000 km; I at 50,000 km. Key: I = check and clean, adjust, lubricate or replace if necessary; C = clean; R = replace; A = adjust; L = lubricate. The first service is due at 1,000 km or within 6 months of registration; the annual service is due within 12 months of the last one if the distance is not reached.
Safety tightening torques (check)

Engine

Factory

Factory: Tabelle Wartungsprogramm (printed pp.96-97, translated from German), km x 1,000 columns 1 to 50: I at 1,000 km; I at 10,000 km; I at 20,000 km; I at 30,000 km; I at 40,000 km; I at 50,000 km. Key: I = check and clean, adjust, lubricate or replace if necessary; C = clean; R = replace; A = adjust; L = lubricate. The first service is due at 1,000 km or within 6 months of registration; the annual service is due within 12 months of the last one if the distance is not reached.
Suspension (check)

Engine

Factory

Factory: Tabelle Wartungsprogramm (printed pp.96-97, translated from German), km x 1,000 columns 1 to 50: I at 10,000 km; I at 20,000 km; I at 30,000 km; I at 40,000 km; I at 50,000 km. Key: I = check and clean, adjust, lubricate or replace if necessary; C = clean; R = replace; A = adjust; L = lubricate. The first service is due at 1,000 km or within 6 months of registration; the annual service is due within 12 months of the last one if the distance is not reached.
Air filter (replace)

Fuel and air

Factory

Factory: Tabelle Wartungsprogramm (printed pp.96-97, translated from German), km x 1,000 columns 1 to 50: R at 10,000 km; R at 20,000 km; R at 30,000 km; R at 40,000 km; R at 50,000 km. Key: I = check and clean, adjust, lubricate or replace if necessary; C = clean; R = replace; A = adjust; L = lubricate. The first service is due at 1,000 km or within 6 months of registration; the annual service is due within 12 months of the last one if the distance is not reached.
Clutch shoes / variator rollers (check)

Primary and gearbox

Factory

Factory: Tabelle Wartungsprogramm (printed pp.96-97, translated from German), km x 1,000 columns 1 to 50: I at 10,000 km; I at 30,000 km; I at 50,000 km. Key: I = check and clean, adjust, lubricate or replace if necessary; C = clean; R = replace; A = adjust; L = lubricate. The first service is due at 1,000 km or within 6 months of registration; the annual service is due within 12 months of the last one if the distance is not reached.
Transmission (lubricate)

Primary and gearbox

Factory

Factory: Tabelle Wartungsprogramm (printed pp.96-97, translated from German), km x 1,000 columns 1 to 50: L at 10,000 km; L at 20,000 km; L at 30,000 km; L at 40,000 km; L at 50,000 km. Key: I = check and clean, adjust, lubricate or replace if necessary; C = clean; R = replace; A = adjust; L = lubricate. The first service is due at 1,000 km or within 6 months of registration; the annual service is due within 12 months of the last one if the distance is not reached.
Steering (adjust)

Front end

Factory

Factory: Tabelle Wartungsprogramm (printed pp.96-97, translated from German), km x 1,000 columns 1 to 50: A at 1,000 km; A at 10,000 km; A at 20,000 km; A at 30,000 km; A at 40,000 km; A at 50,000 km. Key: I = check and clean, adjust, lubricate or replace if necessary; C = clean; R = replace; A = adjust; L = lubricate. The first service is due at 1,000 km or within 6 months of registration; the annual service is due within 12 months of the last one if the distance is not reached.
Center / side stand (check)

Rear suspension and frame

Factory

Factory: Tabelle Wartungsprogramm (printed pp.96-97, translated from German), km x 1,000 columns 1 to 50: I at 10,000 km; I at 20,000 km; I at 30,000 km; I at 40,000 km; I at 50,000 km. Key: I = check and clean, adjust, lubricate or replace if necessary; C = clean; R = replace; A = adjust; L = lubricate. The first service is due at 1,000 km or within 6 months of registration; the annual service is due within 12 months of the last one if the distance is not reached.
Brake system (check)

Brakes

Factory

Factory: Tabelle Wartungsprogramm (printed pp.96-97, translated from German), km x 1,000 columns 1 to 50: I at 1,000 km; I at 10,000 km; I at 20,000 km; I at 30,000 km; I at 40,000 km; I at 50,000 km. Key: I = check and clean, adjust, lubricate or replace if necessary; C = clean; R = replace; A = adjust; L = lubricate. The first service is due at 1,000 km or within 6 months of registration; the annual service is due within 12 months of the last one if the distance is not reached.
Throttle cable (check)

Controls and cables

Factory

Factory: Tabelle Wartungsprogramm (printed pp.96-97, translated from German), km x 1,000 columns 1 to 50: I at 1,000 km; I at 10,000 km; I at 20,000 km; I at 30,000 km; I at 40,000 km; I at 50,000 km. Key: I = check and clean, adjust, lubricate or replace if necessary; C = clean; R = replace; A = adjust; L = lubricate. The first service is due at 1,000 km or within 6 months of registration; the annual service is due within 12 months of the last one if the distance is not reached.

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 19,500 km or 2 years

3 items

Replace air filter element

Fuel and air

Guideline
Synchronize throttle bodies

Fuel and air

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 20,000 km

6 items

Drive belt (replace)

Engine

Factory

Factory: Tabelle Wartungsprogramm (printed pp.96-97, translated from German), km x 1,000 columns 1 to 50: R at 20,000 km; R at 40,000 km. Key: I = check and clean, adjust, lubricate or replace if necessary; C = clean; R = replace; A = adjust; L = lubricate. The first service is due at 1,000 km or within 6 months of registration; the annual service is due within 12 months of the last one if the distance is not reached.
Radiator, external cleaning

Engine

Factory

Factory: Tabelle Wartungsprogramm (printed pp.96-97, translated from German), km x 1,000 columns 1 to 50: C at 20,000 km; C at 40,000 km. Key: I = check and clean, adjust, lubricate or replace if necessary; C = clean; R = replace; A = adjust; L = lubricate. The first service is due at 1,000 km or within 6 months of registration; the annual service is due within 12 months of the last one if the distance is not reached.
Spark plug (replace)

Engine

Factory

Factory: Tabelle Wartungsprogramm (printed pp.96-97, translated from German), km x 1,000 columns 1 to 50: R at 20,000 km; R at 40,000 km. Key: I = check and clean, adjust, lubricate or replace if necessary; C = clean; R = replace; A = adjust; L = lubricate. The first service is due at 1,000 km or within 6 months of registration; the annual service is due within 12 months of the last one if the distance is not reached.
Valve clearance (adjust)

Engine

Factory

Factory: Tabelle Wartungsprogramm (printed pp.96-97, translated from German), km x 1,000 columns 1 to 50: A at 10,000 km; A at 30,000 km; A at 50,000 km. Key: I = check and clean, adjust, lubricate or replace if necessary; C = clean; R = replace; A = adjust; L = lubricate. The first service is due at 1,000 km or within 6 months of registration; the annual service is due within 12 months of the last one if the distance is not reached.
Clutch shoes / variator rollers (replace)

Primary and gearbox

Factory

Factory: Tabelle Wartungsprogramm (printed pp.96-97, translated from German), km x 1,000 columns 1 to 50: R at 20,000 km; R at 40,000 km. Key: I = check and clean, adjust, lubricate or replace if necessary; C = clean; R = replace; A = adjust; L = lubricate. The first service is due at 1,000 km or within 6 months of registration; the annual service is due within 12 months of the last one if the distance is not reached.
Clutch unit (check)

Primary and gearbox

Factory

Factory: Tabelle Wartungsprogramm (printed pp.96-97, translated from German), km x 1,000 columns 1 to 50: I at 20,000 km; I at 40,000 km. Key: I = check and clean, adjust, lubricate or replace if necessary; C = clean; R = replace; A = adjust; L = lubricate. The first service is due at 1,000 km or within 6 months of registration; the annual service is due within 12 months of the last one if the distance is not reached.

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 25,500 km or 4 years

1 item

Replace spark plugs

Engine

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 6 months

1 item

Clean battery terminals, check charge and strap

Ignition and electrics

Guideline

Every 12 months

1 item

Annual time-based service (no distance reached)

Engine

Factory

Factory: Tabelle der regelmaessigen Wartungsarbeiten (printed pp.98-99), column 4T i.e. liquid-cooled, at 12 and 24 months: stand (lubricate); throttle cable, diagnosis with instrument, rear hub oil, brake pads, tire pressure and wear, suspension, steering and road test (check); engine oil filter and engine oil (replace); brake lever and transmission (lubricate); coolant and brake fluid (check at 12 months, replace at 24 months). Key: I = check and clean, adjust, lubricate or replace if necessary; C = clean; R = replace; A = adjust; L = lubricate. The first service is due at 1,000 km or within 6 months of registration; the annual service is due within 12 months of the last one if the distance is not reached.

Every 2 years

6 items

Coolant (replace)

Engine

Factory

Factory: Tabelle Wartungsprogramm (printed pp.96-97, translated from German), km x 1,000 columns 1 to 50: Marked ** : replace every 2 years. Key: I = check and clean, adjust, lubricate or replace if necessary; C = clean; R = replace; A = adjust; L = lubricate. The first service is due at 1,000 km or within 6 months of registration; the annual service is due within 12 months of the last one if the distance is not reached.
Replace coolant

Engine

Guideline
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 (replace)

Brakes

Factory

Factory: Tabelle Wartungsprogramm (printed pp.96-97, translated from German), km x 1,000 columns 1 to 50: Marked ** : replace every 2 years. Key: I = check and clean, adjust, lubricate or replace if necessary; C = clean; R = replace; A = adjust; L = lubricate. The first service is due at 1,000 km or within 6 months of registration; the annual service is due within 12 months of the last one if the distance is not reached.
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.