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Adly · Two-stroke single, premix, CVT belt drive

GTA-50

Library entry covers 2018

13 factory 51 guideline

Published source

Adly Moto GTA 50 Owner's Manual, periodic checks and services p.12 (ManualsLib viewer p.12)

Factory source. Covers ADLY MOTO GTA 50 Owner's Manual (ManualsLib title), no year printed on the page read.

64 items for a 2018 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: Two-stroke
Engine lubrication: Two-stroke premix (oil in fuel)
Oil filtration: None (no filter)
Valve gear: None (two-stroke porting)
Ignition: Magneto (incl. magdyno, flywheel magneto)
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: 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: Drum (or band / stirrup)
Rear brake: Drum (or band / belt rim)
Wheels: Spoked, tubed
Sidecar: No sidecar

Maintenance schedule

2018 Adly GTA-50

On the road: every 200 km

1 item

Check two-stroke oil tank / carry premix oil

Pre-ride / on the road

Guideline

Running a two-stroke out of oil seizes it. Injection bikes: check the tank. Premix: carry oil and a measure.

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

Every 1,600 km 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 1,609 km

3 items

Battery (inspect)

Ignition and electrics

Factory

Factory: Periodic checks and services (owner's manual p.12): I from 500 at every listed service. Columns as printed: regular service mileage 300, 500, 1,000, then every 1,000 to 9,000 (miles, per the remarks); when the listed mileage is exceeded, keep the listed intervals. Key: R replace, A adjust, C clean, T tighten, I inspect and clean.
Brake system (inspect)

Brakes

Factory

Factory: Periodic checks and services (owner's manual p.12): I at every listed service. Columns as printed: regular service mileage 300, 500, 1,000, then every 1,000 to 9,000 (miles, per the remarks); when the listed mileage is exceeded, keep the listed intervals. Key: R replace, A adjust, C clean, T tighten, I inspect and clean.
Tires (inspect)

Wheels and tires

Factory

Factory: Periodic checks and services (owner's manual p.12): I at every listed service. Columns as printed: regular service mileage 300, 500, 1,000, then every 1,000 to 9,000 (miles, per the remarks); when the listed mileage is exceeded, keep the listed intervals. Key: R replace, A adjust, C clean, T tighten, I inspect and clean.

Every 2,414 km

1 item

Spark plug (clean)

Engine

Factory

Factory: Periodic checks and services (owner's manual p.12): every 1,500 miles or as necessary. Columns as printed: regular service mileage 300, 500, 1,000, then every 1,000 to 9,000 (miles, per the remarks); when the listed mileage is exceeded, keep the listed intervals. Key: R replace, A adjust, C clean, T tighten, I inspect and clean.

Every 3,000 km or 12 months

1 item

Replace spark plugs (two-stroke)

Engine

Guideline

Every 4,828 km

2 items

Drive belt (check)

Engine

Factory

Factory: Periodic checks and services (owner's manual p.12): every 3,000 miles; replace if worn or cracked. Columns as printed: regular service mileage 300, 500, 1,000, then every 1,000 to 9,000 (miles, per the remarks); when the listed mileage is exceeded, keep the listed intervals. Key: R replace, A adjust, C clean, T tighten, I inspect and clean.
Air filter (replace)

Fuel and air

Factory

Factory: Periodic checks and services (owner's manual p.12): every 3,000 miles or as needed. Columns as printed: regular service mileage 300, 500, 1,000, then every 1,000 to 9,000 (miles, per the remarks); when the listed mileage is exceeded, keep the listed intervals. Key: R replace, A adjust, C clean, T tighten, I inspect and clean.

Every 5,000 km or 12 months

11 items

Check throttle cable(s) free play and return

Fuel and air

Guideline
Clean fuel tap filter / sediment bowl

Fuel and air

Guideline
Check / set ignition timing

Ignition and electrics

Guideline
Clean and gap contact breaker points, oil cam felt

Ignition and electrics

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 spoke tension and wheel true

Wheels and tires

Guideline
Check wheel bearings for play

Wheels and tires

Guideline

Every 5,000 km or 2 years

1 item

Decarbonize exhaust ports, pipes and baffles

Engine

Guideline

Two-strokes coke up the exhaust port and muffler baffles; power falls off gradually.

Every 6,437 km

1 item

Carburetor (inspect)

Fuel and air

Factory

Factory: Periodic checks and services (owner's manual p.12): I at 3,000 and 7,000. Columns as printed: regular service mileage 300, 500, 1,000, then every 1,000 to 9,000 (miles, per the remarks); when the listed mileage is exceeded, keep the listed intervals. Key: R replace, A adjust, C clean, T tighten, I inspect and clean.

Every 6,500 km or 12 months

3 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.
Lubricate brake cam spindles, check linings and drums

Brakes

Guideline

Every 8,047 km

5 items

Gear oil (replace)

Engine

Factory

Factory: Periodic checks and services (owner's manual p.12): R at 300, 4,000 and 9,000. Columns as printed: regular service mileage 300, 500, 1,000, then every 1,000 to 9,000 (miles, per the remarks); when the listed mileage is exceeded, keep the listed intervals. Key: R replace, A adjust, C clean, T tighten, I inspect and clean.
Nuts and bolts (tighten)

Engine

Factory

Factory: Periodic checks and services (owner's manual p.12): T at 300, 4,000 and 9,000. Columns as printed: regular service mileage 300, 500, 1,000, then every 1,000 to 9,000 (miles, per the remarks); when the listed mileage is exceeded, keep the listed intervals. Key: R replace, A adjust, C clean, T tighten, I inspect and clean.
Fuel filter (replace)

Fuel and air

Factory

Factory: Periodic checks and services (owner's manual p.12): R at 4,000 and 9,000. Columns as printed: regular service mileage 300, 500, 1,000, then every 1,000 to 9,000 (miles, per the remarks); when the listed mileage is exceeded, keep the listed intervals. Key: R replace, A adjust, C clean, T tighten, I inspect and clean.
Muffler and fuel line (inspect)

Fuel and air

Factory

Factory: Periodic checks and services (owner's manual p.12): I at 1,000, 4,000 and 9,000. Columns as printed: regular service mileage 300, 500, 1,000, then every 1,000 to 9,000 (miles, per the remarks); when the listed mileage is exceeded, keep the listed intervals. Key: R replace, A adjust, C clean, T tighten, I inspect and clean.
Pulse air filter (inspect, replace)

Fuel and air

Factory

Factory: Periodic checks and services (owner's manual p.12): I at 1,000; R at 4,000 and 9,000. Columns as printed: regular service mileage 300, 500, 1,000, then every 1,000 to 9,000 (miles, per the remarks); when the listed mileage is exceeded, keep the listed intervals. Key: R replace, A adjust, C clean, T tighten, I inspect and clean.

Every 9,500 km 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 9,500 km or 2 years

2 items

Lubricate and check automatic advance unit

Ignition and electrics

Guideline
Magneto: clean slip ring and pickup brush, check HT lead

Ignition and electrics

Guideline

Every 9,656 km

1 item

Coolant (check, replace)

Engine

Factory

Factory: Periodic checks and services (owner's manual p.12): check every ride, replace every 6,000 miles. Columns as printed: regular service mileage 300, 500, 1,000, then every 1,000 to 9,000 (miles, per the remarks); when the listed mileage is exceeded, keep the listed intervals. Key: R replace, A adjust, C clean, T tighten, I inspect and clean.

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

2 items

Replace air filter element

Fuel and air

Guideline
Grease swingarm pivot

Rear suspension and frame

Guideline

Every 19,500 km or 3 years

2 items

Replace points and condenser

Ignition and electrics

Guideline
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

1 item

Replace brake linings / skim drums (wear based)

Brakes

Guideline

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 40,000 km or 6 years

1 item

Replace swingarm bushes / bearings

Rear suspension and frame

Guideline

Every 40,000 km or 10 years

1 item

Magneto overhaul / re-magnetize, replace capacitor

Ignition and electrics

Guideline

Weak spark when hot is the classic symptom. Old capacitors fail with age, not miles.

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

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

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.