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Rieju · Two-stroke single, oil injection, chain drive

MRT 50

Library entry covers 2010-2025

36 factory 60 guideline

Published source

RIEJU MRT 50 LC Euro 5 Owner's Manual (2022), Maintenance table pp.76-77

Factory owner's handbook. Covers RIEJU MRT 50 LC Euro 5 owner's manual (English, 2022 file on cdn.rieju.com); the older Euro 4 years used another manual.

96 items for a 2022 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 oil injection (Autolube, Injectolube, Pilgrim pump...)
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: Liquid cooled
Primary drive: Gear or chain inside engine, shares engine oil
Gearbox oil: Separate gearbox oil
Clutch control: Hand lever, cable
Final drive: Chain
Front suspension: Telescopic fork
Rear suspension: Swingarm, single shock / cantilever
Front brake: Disc, hydraulic
Rear brake: Disc, hydraulic
Wheels: Spoked, tubed
Sidecar: No sidecar

Maintenance schedule

2022 Rieju MRT 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

3 items

Check lights, horn, brake light switches

Pre-ride / on the road

Guideline
Check tire pressures

Pre-ride / on the road

Guideline
Lubricate drive chain

Pre-ride / on the road

Guideline

Lube warm, ideally at the end of the riding day so it soaks in overnight. Sooner after rain.

On the road: every 800 km

1 item

Check coolant level

Pre-ride / on the road

Guideline

On the road: every 1,000 km

1 item

Check chain slack and rear wheel alignment

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 or 12 months

1 item

Replace spark plugs (two-stroke)

Engine

Guideline

Every 3,000 km

24 items

Coolant and level (check)

Engine

Factory

Factory: Maintenance table (p.77): 1,000 km: I; 4,000 km: I; 7,000 km: I; 10,000 km: C; every +3,000 km: I - C (+10.000 Km). Legend: I = check-adjust; C = change; E = grease; L = clean. The maintenance schedule may change depending on motorbike use, driving, environmental conditions, etc.
Crankcase leaks (check)

Engine

Factory

Factory: Maintenance table (p.76): 1,000 km: I; 4,000 km: I; 7,000 km: I; 10,000 km: I; every +3,000 km: I. Legend: I = check-adjust; C = change; E = grease; L = clean. The maintenance schedule may change depending on motorbike use, driving, environmental conditions, etc.
Electrical system (check)

Engine

Factory

Factory: Maintenance table (p.76): 1,000 km: I; 4,000 km: I; 7,000 km: I; 10,000 km: I; every +3,000 km: I. Legend: I = check-adjust; C = change; E = grease; L = clean. The maintenance schedule may change depending on motorbike use, driving, environmental conditions, etc.
Engine nuts and bolts (check)

Engine

Factory

Factory: Maintenance table (p.77): 1,000 km: I; 4,000 km: I; 7,000 km: I; 10,000 km: I; every +3,000 km: I. Legend: I = check-adjust; C = change; E = grease; L = clean. The maintenance schedule may change depending on motorbike use, driving, environmental conditions, etc.
Engine oil (change)

Engine

Factory

Factory: Maintenance table (p.76): 1,000 km: C; 4,000 km: C; 7,000 km: C; 10,000 km: C; every +3,000 km: C. Legend: I = check-adjust; C = change; E = grease; L = clean. The maintenance schedule may change depending on motorbike use, driving, environmental conditions, etc.
Exhaust system (check)

Engine

Factory

Factory: Maintenance table (p.76): 1,000 km: I; 4,000 km: I; 7,000 km: I; 10,000 km: I; every +3,000 km: I. Legend: I = check-adjust; C = change; E = grease; L = clean. The maintenance schedule may change depending on motorbike use, driving, environmental conditions, etc.
Front/rear suspension (check)

Engine

Factory

Factory: Maintenance table (p.77): 1,000 km: I; 7,000 km: I; every +3,000 km: I. Blank at 4,000 and 10,000 km; the every +3,000 km column prints I. Legend: I = check-adjust; C = change; E = grease; L = clean. The maintenance schedule may change depending on motorbike use, driving, environmental conditions, etc.
Nuts and bolts for each component (check)

Engine

Factory

Factory: Maintenance table (p.77): 1,000 km: I; 4,000 km: I; 7,000 km: I; 10,000 km: I; every +3,000 km: I. Legend: I = check-adjust; C = change; E = grease; L = clean. The maintenance schedule may change depending on motorbike use, driving, environmental conditions, etc.
Oil pump operation (check)

Engine

Factory

Factory: Maintenance table (p.76): 1,000 km: I; 4,000 km: I; 7,000 km: I; 10,000 km: I; every +3,000 km: I. Legend: I = check-adjust; C = change; E = grease; L = clean. The maintenance schedule may change depending on motorbike use, driving, environmental conditions, etc.
Spark plug (check)

Engine

Factory

Factory: Maintenance table (p.76): 1,000 km: I; 4,000 km: I; 7,000 km: I; 10,000 km: C; every +3,000 km: I - C (+10.000 Km). Legend: I = check-adjust; C = change; E = grease; L = clean. The maintenance schedule may change depending on motorbike use, driving, environmental conditions, etc.
Air filter (clean, grease)

Fuel and air

Factory

Factory: Maintenance table (p.76): 1,000 km: L/E; 4,000 km: C; 7,000 km: L/E; 10,000 km: C; every +3,000 km: L/E - C. Legend: I = check-adjust; C = change; E = grease; L = clean. The maintenance schedule may change depending on motorbike use, driving, environmental conditions, etc.
Fuel line (check)

Fuel and air

Factory

Factory: Maintenance table (p.76): 1,000 km: I; 4,000 km: I; 7,000 km: I; 10,000 km: I; every +3,000 km: I. Legend: I = check-adjust; C = change; E = grease; L = clean. The maintenance schedule may change depending on motorbike use, driving, environmental conditions, etc.
Transmission leaks (check)

Primary and gearbox

Factory

Factory: Maintenance table (p.76): 1,000 km: I; 4,000 km: I; 7,000 km: I; 10,000 km: I; every +3,000 km: I. Legend: I = check-adjust; C = change; E = grease; L = clean. The maintenance schedule may change depending on motorbike use, driving, environmental conditions, etc.
Drive chain tension and wear (check, grease)

Final drive

Factory

Factory: Maintenance table (p.76): 1,000 km: I/E; 4,000 km: I/E; 7,000 km: I/E; 10,000 km: C; every +3,000 km: I/E - C (+10.000 Km). Legend: I = check-adjust; C = change; E = grease; L = clean. The maintenance schedule may change depending on motorbike use, driving, environmental conditions, etc.
Steering and handlebars (check)

Front end

Factory

Factory: Maintenance table (p.76): 1,000 km: I; 4,000 km: I; 7,000 km: I; 10,000 km: I; every +3,000 km: I. Legend: I = check-adjust; C = change; E = grease; L = clean. The maintenance schedule may change depending on motorbike use, driving, environmental conditions, etc.
Center stand/kickstand (check, grease)

Rear suspension and frame

Factory

Factory: Maintenance table (p.77): 1,000 km: I; 7,000 km: I/E; every +3,000 km: I/E. Blank at 4,000 and 10,000 km; the every +3,000 km column prints I/E. Legend: I = check-adjust; C = change; E = grease; L = clean. The maintenance schedule may change depending on motorbike use, driving, environmental conditions, etc.
Shock absorbers (check)

Rear suspension and frame

Factory

Factory: Maintenance table (p.77): 1,000 km: I; 7,000 km: I; every +3,000 km: I. Blank at 4,000 and 10,000 km; the every +3,000 km column prints I. Legend: I = check-adjust; C = change; E = grease; L = clean. The maintenance schedule may change depending on motorbike use, driving, environmental conditions, etc.
Brake disc (check)

Brakes

Factory

Factory: Maintenance table (p.77): 1,000 km: I; 4,000 km: I; 7,000 km: C; 10,000 km: I; every +3,000 km: I - C (+7.000 Km). Legend: I = check-adjust; C = change; E = grease; L = clean. The maintenance schedule may change depending on motorbike use, driving, environmental conditions, etc.
Brake fluid (check)

Brakes

Factory

Factory: Maintenance table (p.77): 1,000 km: I; 4,000 km: I; 7,000 km: I; 10,000 km: C; every +3,000 km: I - C (+10.000 Km). Legend: I = check-adjust; C = change; E = grease; L = clean. The maintenance schedule may change depending on motorbike use, driving, environmental conditions, etc.
Brake mechanism/coating (check)

Brakes

Factory

Factory: Maintenance table (p.77): 1,000 km: I; 4,000 km: I; 7,000 km: I; 10,000 km: I; every +3,000 km: I. Legend: I = check-adjust; C = change; E = grease; L = clean. The maintenance schedule may change depending on motorbike use, driving, environmental conditions, etc.
Brake pads (change)

Brakes

Factory

Factory: Maintenance table (p.77): 1,000 km: I; 4,000 km: C; 7,000 km: C; 10,000 km: C; every +3,000 km: C. Legend: I = check-adjust; C = change; E = grease; L = clean. The maintenance schedule may change depending on motorbike use, driving, environmental conditions, etc.
Tires, pressure and condition (check)

Wheels and tires

Factory

Factory: Maintenance table (p.77): 1,000 km: I; 4,000 km: I; 7,000 km: I; 10,000 km: C; every +3,000 km: I - C (+10.000 Km). Legend: I = check-adjust; C = change; E = grease; L = clean. The maintenance schedule may change depending on motorbike use, driving, environmental conditions, etc.
Wheel spoke tension and offset (check)

Wheels and tires

Factory

Factory: Maintenance table (p.77): 1,000 km: I; 4,000 km: I; 7,000 km: I; 10,000 km: I; every +3,000 km: I. Legend: I = check-adjust; C = change; E = grease; L = clean. The maintenance schedule may change depending on motorbike use, driving, environmental conditions, etc.
Operation of controls, throttle and cables (check)

Controls and cables

Factory

Factory: Maintenance table (p.76): 1,000 km: I; 4,000 km: I; 7,000 km: I; 10,000 km: I; every +3,000 km: I. Legend: I = check-adjust; C = change; E = grease; L = clean. The maintenance schedule may change depending on motorbike use, driving, environmental conditions, etc.

Every 5,000 km or 12 months

13 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
Clean drive chain thoroughly (remove and soak, re-lube)

Final drive

Guideline

Non O-ring chains on old machines: remove, clean, soak in hot chain grease or lube, refit with the master link clip closed end leading.
Inspect chain and sprockets for wear (measure stretch)

Final drive

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 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 6,000 km

3 items

Air filter (change)

Fuel and air

Factory

Factory: Maintenance table (p.76): 1,000 km: L/E; 4,000 km: C; 7,000 km: L/E; 10,000 km: C; every +3,000 km: L/E - C. Changed at 4,000 and 10,000 km; the +3,000 km column prints L/E - C. Legend: I = check-adjust; C = change; E = grease; L = clean. The maintenance schedule may change depending on motorbike use, driving, environmental conditions, etc.
Carburetor (inspect and adjust)

Fuel and air

Factory

Factory: Maintenance table (p.76): 1,000 km: I; 7,000 km: I; every +3,000 km: I (+6.000 Km). Legend: I = check-adjust; C = change; E = grease; L = clean. The maintenance schedule may change depending on motorbike use, driving, environmental conditions, etc.
Carburetor idle (check)

Fuel and air

Factory

Factory: Maintenance table (p.76): 1,000 km: I; 7,000 km: I; every +3,000 km: I (+6.000 Km). Legend: I = check-adjust; C = change; E = grease; L = clean. The maintenance schedule may change depending on motorbike use, driving, environmental conditions, etc.

Every 6,500 km or 12 months

3 items

Check / bleed / adjust oil injection pump cable

Engine

Guideline
Inspect, clean and gap spark plugs

Engine

Guideline
Adjust clutch free play, lubricate cable and lever pivot

Primary and gearbox

Guideline

Every 7,000 km

1 item

Brake disc (change)

Brakes

Factory

Factory: Maintenance table (p.77): 1,000 km: I; 4,000 km: I; 7,000 km: C; 10,000 km: I; every +3,000 km: I - C (+7.000 Km). Legend: I = check-adjust; C = change; E = grease; L = clean. The maintenance schedule may change depending on motorbike use, driving, environmental conditions, etc.

Every 9,500 km or 12 months

8 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.
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 10,000 km

5 items

Coolant (change)

Engine

Factory

Factory: Maintenance table (p.77): 1,000 km: I; 4,000 km: I; 7,000 km: I; 10,000 km: C; every +3,000 km: I - C (+10.000 Km). Legend: I = check-adjust; C = change; E = grease; L = clean. The maintenance schedule may change depending on motorbike use, driving, environmental conditions, etc.
Spark plug (change)

Engine

Factory

Factory: Maintenance table (p.76): 1,000 km: I; 4,000 km: I; 7,000 km: I; 10,000 km: C; every +3,000 km: I - C (+10.000 Km). Legend: I = check-adjust; C = change; E = grease; L = clean. The maintenance schedule may change depending on motorbike use, driving, environmental conditions, etc.
Drive chain (change)

Final drive

Factory

Factory: Maintenance table (p.76): 1,000 km: I/E; 4,000 km: I/E; 7,000 km: I/E; 10,000 km: C; every +3,000 km: I/E - C (+10.000 Km). Legend: I = check-adjust; C = change; E = grease; L = clean. The maintenance schedule may change depending on motorbike use, driving, environmental conditions, etc.
Brake fluid (change)

Brakes

Factory

Factory: Maintenance table (p.77): 1,000 km: I; 4,000 km: I; 7,000 km: I; 10,000 km: C; every +3,000 km: I - C (+10.000 Km). Legend: I = check-adjust; C = change; E = grease; L = clean. The maintenance schedule may change depending on motorbike use, driving, environmental conditions, etc.
Tires (change)

Wheels and tires

Factory

Factory: Maintenance table (p.77): 1,000 km: I; 4,000 km: I; 7,000 km: I; 10,000 km: C; every +3,000 km: I - C (+10.000 Km). Legend: I = check-adjust; C = change; E = grease; L = clean. The maintenance schedule may change depending on motorbike use, driving, environmental conditions, etc.

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
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 points and condenser

Ignition and electrics

Guideline

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 29,000 km

1 item

Replace chain and sprockets (wear based)

Final drive

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

4 items

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
Replace brake fluid

Brakes

Guideline

Every 4 years

4 items

Replace oil injection delivery lines

Engine

Guideline
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

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

No interval set

3 items

Cylinder head, cylinder and piston (check)

Engine

Factory

Factory: Maintenance table (p.76): 7,000 km: I. No mark in the other columns, including the every +3,000 km column. Legend: I = check-adjust; C = change; E = grease; L = clean. The maintenance schedule may change depending on motorbike use, driving, environmental conditions, etc.
Piston ring wear (check)

Engine

Factory

Factory: Maintenance table (p.76): 7,000 km: I; 10,000 km: I. No mark in the every +3,000 km column. Legend: I = check-adjust; C = change; E = grease; L = clean. The maintenance schedule may change depending on motorbike use, driving, environmental conditions, etc.
Clutch (check)

Primary and gearbox

Factory

Factory: Maintenance table (p.76): 7,000 km: I; 10,000 km: I. No mark in the every +3,000 km column. Legend: I = check-adjust; C = change; E = grease; L = clean. The maintenance schedule may change depending on motorbike use, driving, environmental conditions, etc.

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.