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

GP 125

Library entry covers 2020-2025

24 factory 32 guideline

Published source

Royal Alloy Grand Prix 125 Operation Manual, Maintenance Schedule printed p.31 (viewer p.32)

Factory owner's handbook. Covers Royal Alloy Grand Prix 125 Operation Manual (ManualsLib 3938571; its page images are shared with the Grand Prix 200 manual), no year printed; chart has coolant and radiator rows (liquid-cooled); LC versus AC variant not confirmed.

56 items for a 2021 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: Disc, hydraulic
Rear brake: Disc, hydraulic
Wheels: Cast / alloy, tubeless
Sidecar: No sidecar

Maintenance schedule

2021 Royal Alloy GP 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

Every 3,000 km or 6 months

16 items

All fasteners (I)

Engine

Factory

Factory: Maintenance schedule p.31 (columns 500 km or 6 months, 3000 km or 12 months, then 3000 km or 6 month steps to 24000 km or 54 months, and 30000 km or 60 months; I = inspect, clean, adjust, lubricate or replace if necessary; C = clean; R = replace): I in every column
Change engine oil

Engine

Factory

Manual: Engine oil (replace). Factory: Maintenance schedule p.31 (columns 500 km or 6 months, 3000 km or 12 months, then 3000 km or 6 month steps to 24000 km or 54 months, and 30000 km or 60 months; I = inspect, clean, adjust, lubricate or replace if necessary; C = clean; R = replace): R in every column
Check and adjust valve clearances

Engine

Factory

Manual: Valve clearance (I). Factory: Maintenance schedule p.31 (columns 500 km or 6 months, 3000 km or 12 months, then 3000 km or 6 month steps to 24000 km or 54 months, and 30000 km or 60 months; I = inspect, clean, adjust, lubricate or replace if necessary; C = clean; R = replace): I in every column
Clean oil strainers / mesh screens

Engine

Factory

Manual: Engine oil filter/strainer (clean). Factory: Maintenance schedule p.31 (columns 500 km or 6 months, 3000 km or 12 months, then 3000 km or 6 month steps to 24000 km or 54 months, and 30000 km or 60 months; I = inspect, clean, adjust, lubricate or replace if necessary; C = clean; R = replace): C in every column
Engine oil pump (I)

Engine

Factory

Factory: Maintenance schedule p.31 (columns 500 km or 6 months, 3000 km or 12 months, then 3000 km or 6 month steps to 24000 km or 54 months, and 30000 km or 60 months; I = inspect, clean, adjust, lubricate or replace if necessary; C = clean; R = replace): I in every column
Inspect coolant hoses and clamps

Engine

Factory

Manual: Radiator (inspect/clean). Factory: Maintenance schedule p.31 (columns 500 km or 6 months, 3000 km or 12 months, then 3000 km or 6 month steps to 24000 km or 54 months, and 30000 km or 60 months; I = inspect, clean, adjust, lubricate or replace if necessary; C = clean; R = replace): I/C in every column
Check throttle cable(s) free play and return

Fuel and air

Factory

Manual: Lubrication of cables (I). Factory: Maintenance schedule p.31 (columns 500 km or 6 months, 3000 km or 12 months, then 3000 km or 6 month steps to 24000 km or 54 months, and 30000 km or 60 months; I = inspect, clean, adjust, lubricate or replace if necessary; C = clean; R = replace): I in every column
Clean / inspect air filter

Fuel and air

Factory

Manual: Air filter (clean). Factory: Maintenance schedule p.31 (columns 500 km or 6 months, 3000 km or 12 months, then 3000 km or 6 month steps to 24000 km or 54 months, and 30000 km or 60 months; I = inspect, clean, adjust, lubricate or replace if necessary; C = clean; R = replace): C at 500, 3000, 9000, 15000, 21000 and 30000 km
Clean battery terminals, check charge and strap

Ignition and electrics

Factory

Manual: Electrical system and battery (I). Factory: Maintenance schedule p.31 (columns 500 km or 6 months, 3000 km or 12 months, then 3000 km or 6 month steps to 24000 km or 54 months, and 30000 km or 60 months; I = inspect, clean, adjust, lubricate or replace if necessary; C = clean; R = replace): I in every column
Transmission cover air duct filter (I)

Primary and gearbox

Factory

Factory: Maintenance schedule p.31 (columns 500 km or 6 months, 3000 km or 12 months, then 3000 km or 6 month steps to 24000 km or 54 months, and 30000 km or 60 months; I = inspect, clean, adjust, lubricate or replace if necessary; C = clean; R = replace): I in every column
Transmission oil (replace)

Primary and gearbox

Factory

Factory: Maintenance schedule p.31 (columns 500 km or 6 months, 3000 km or 12 months, then 3000 km or 6 month steps to 24000 km or 54 months, and 30000 km or 60 months; I = inspect, clean, adjust, lubricate or replace if necessary; C = clean; R = replace): R in every column
Inspect drive belt, pulleys and tension

Final drive

Factory

Manual: Drive belt (inspect). Factory: Maintenance schedule p.31 (columns 500 km or 6 months, 3000 km or 12 months, then 3000 km or 6 month steps to 24000 km or 54 months, and 30000 km or 60 months; I = inspect, clean, adjust, lubricate or replace if necessary; C = clean; R = replace): I at 500 and 3000 km, R at 6000, 12000, 18000 and 24000 km, I in the columns between
Check steering head bearing adjustment

Front end

Factory

Manual: Steering/handlebars (I). Factory: Maintenance schedule p.31 (columns 500 km or 6 months, 3000 km or 12 months, then 3000 km or 6 month steps to 24000 km or 54 months, and 30000 km or 60 months; I = inspect, clean, adjust, lubricate or replace if necessary; C = clean; R = replace): I in every column
Inspect rear shocks for leaks and damping

Rear suspension and frame

Factory

Manual: Suspension (I). Factory: Maintenance schedule p.31 (columns 500 km or 6 months, 3000 km or 12 months, then 3000 km or 6 month steps to 24000 km or 54 months, and 30000 km or 60 months; I = inspect, clean, adjust, lubricate or replace if necessary; C = clean; R = replace): I in every column
Check brake pads and discs

Brakes

Factory

Manual: Braking systems (I). Factory: Maintenance schedule p.31 (columns 500 km or 6 months, 3000 km or 12 months, then 3000 km or 6 month steps to 24000 km or 54 months, and 30000 km or 60 months; I = inspect, clean, adjust, lubricate or replace if necessary; C = clean; R = replace): I in every column
Inspect tire tread, sidewalls and date codes

Wheels and tires

Factory

Manual: Wheels/tires (I). Factory: Maintenance schedule p.31 (columns 500 km or 6 months, 3000 km or 12 months, then 3000 km or 6 month steps to 24000 km or 54 months, and 30000 km or 60 months; I = inspect, clean, adjust, lubricate or replace if necessary; C = clean; R = replace): I in every column

Every 5,000 km 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
Grease and check center / side stand and springs

Rear suspension and frame

Guideline
Check wheel bearings for play

Wheels and tires

Guideline

Every 6,000 km or 12 months

5 items

Plastic sliders in variator cover (replace)

Engine

Factory

Factory: Maintenance schedule p.31 (columns 500 km or 6 months, 3000 km or 12 months, then 3000 km or 6 month steps to 24000 km or 54 months, and 30000 km or 60 months; I = inspect, clean, adjust, lubricate or replace if necessary; C = clean; R = replace): I at 500 and 3000 km, R at 6000, 12000, 18000 and 24000 km, I in the columns between
Replace spark plugs

Engine

Factory

Manual: Spark plug (replace). Factory: Maintenance schedule p.31 (columns 500 km or 6 months, 3000 km or 12 months, then 3000 km or 6 month steps to 24000 km or 54 months, and 30000 km or 60 months; I = inspect, clean, adjust, lubricate or replace if necessary; C = clean; R = replace): I at 500 and 3000 km, R at 6000, 12000, 18000 and 24000 km, I in the columns between
Variator rollers (replace)

Engine

Factory

Factory: Maintenance schedule p.31 (columns 500 km or 6 months, 3000 km or 12 months, then 3000 km or 6 month steps to 24000 km or 54 months, and 30000 km or 60 months; I = inspect, clean, adjust, lubricate or replace if necessary; C = clean; R = replace): I at 500 and 3000 km, R at 6000, 12000, 18000 and 24000 km, I in the columns between
Replace air filter element

Fuel and air

Factory

Manual: Air filter (replace). Factory: Maintenance schedule p.31 (columns 500 km or 6 months, 3000 km or 12 months, then 3000 km or 6 month steps to 24000 km or 54 months, and 30000 km or 60 months; I = inspect, clean, adjust, lubricate or replace if necessary; C = clean; R = replace): R at 6000, 12000, 18000 and 24000 km
Replace drive belt (wear or damage based)

Final drive

Factory

Manual: Drive belt (replace). Factory: Maintenance schedule p.31 (columns 500 km or 6 months, 3000 km or 12 months, then 3000 km or 6 month steps to 24000 km or 54 months, and 30000 km or 60 months; I = inspect, clean, adjust, lubricate or replace if necessary; C = clean; R = replace): I at 500 and 3000 km, R at 6000, 12000, 18000 and 24000 km, I in the columns between

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

1 item

Replace oil filter

Engine

Guideline

Every 9,500 km or 12 months

4 items

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 12,000 km or 2 years

3 items

Replace coolant

Engine

Factory

Manual: Coolant (replace). Factory: Maintenance schedule p.31 (columns 500 km or 6 months, 3000 km or 12 months, then 3000 km or 6 month steps to 24000 km or 54 months, and 30000 km or 60 months; I = inspect, clean, adjust, lubricate or replace if necessary; C = clean; R = replace): R at 9000 km or 24 months and 21000 km or 48 months; I in the other columns
Replace fuel lines

Fuel and air

Factory

Manual: Fuel hoses (replace). Factory: Maintenance schedule p.31 (columns 500 km or 6 months, 3000 km or 12 months, then 3000 km or 6 month steps to 24000 km or 54 months, and 30000 km or 60 months; I = inspect, clean, adjust, lubricate or replace if necessary; C = clean; R = replace): R at 9000 km or 24 months and 21000 km or 48 months; I in the other columns
Replace brake fluid

Brakes

Factory

Manual: Brake fluid (replace). Factory: Maintenance schedule p.31 (columns 500 km or 6 months, 3000 km or 12 months, then 3000 km or 6 month steps to 24000 km or 54 months, and 30000 km or 60 months; I = inspect, clean, adjust, lubricate or replace if necessary; C = clean; R = replace): R at 9000 km or 24 months and 21000 km or 48 months; I in the other columns

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

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 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 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

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.