Honda CBR300R 2021 Maintenance Schedule
The 2021 Honda CBR300R maintenance schedule below covers the manufacturer's recommended service intervals for valve clearance, oil, general maintenance, brake fluid, air filter, spark plugs, coolant, drive chain maintenance and tires. Intervals are shown in kilometres by default and can be switched to miles.
Sourced from American Honda Motor Co. (Owners Manual) (this document covers model years 2018–2022): hondamotopub.com
Full schedule
| Task | Interval | Difficulty | Notes |
|---|---|---|---|
| Valve Clearance Inspection | Every 16,000 mi | Advanced | Inspect and adjust valve clearance. |
| Engine Oil Filter Replacement | Every 8,000 mi (first at 600 mi) | Easy | Replace engine oil filter. |
| Evaporative Emission Control System Inspection | Every 12,000 mi | Moderate | Inspect evaporative emission control system. |
| Brake Fluid | Every 4,000 mi · Replace every 12,000 mi · Replace every 24 months | Moderate | Inspect brake fluid level and condition; replace brake fluid. |
| Brake Pads Wear Inspection | Every 4,000 mi | Moderate | Inspect brake pads for wear. |
| Brake System Inspection | Every 8,000 mi (first at 600 mi) | Moderate | Inspect overall brake system operation. |
| Brake Light Switch Inspection | Every 8,000 mi | Easy | Inspect brake light switch operation. |
| Headlight Aim Inspection | Every 8,000 mi | Easy | Inspect and adjust headlight aim. |
| Fuel Line Inspection | Every 8,000 mi | Easy–Moderate | Inspect fuel line for leaks, cracks, and deterioration. |
| Engine Oil Change | Every 8,000 mi (first at 600 mi) · Every 12 months | Easy | Replace engine oil. |
| Engine Idle Speed Inspection | Every 4,000 mi (first at 600 mi) | Easy–Moderate | Inspect and adjust engine idle speed. |
| Secondary Air Supply System Inspection | Every 8,000 mi | Moderate | Inspect secondary air supply system. |
| Suspension Inspection | Every 8,000 mi | Moderate | Inspect front and rear suspension operation. |
| Steering Head Bearings Inspection | Every 8,000 mi (first at 600 mi) | Moderate | Inspect steering head bearings for looseness or roughness. |
| Throttle Operation Inspection | Every 8,000 mi | Easy–Moderate | Inspect throttle grip freeplay and confirm smooth operation without binding. |
| Air Cleaner Element Replacement | Every 12,000 mi | Easy | Replace air cleaner element. |
| Crankcase Breather Cleaning | Every 4,000 mi | Easy | Clean crankcase breather tube/drain. |
| Spark Plug | Every 16,000 mi · Replace every 32,000 mi | Easy–Moderate | Inspect spark plug every 16,000 mi; replace every 32,000 mi. |
| Radiator Coolant | Every 8,000 mi · Replace every 24,000 mi · Replace every 24 months | Easy–Moderate | Inspect coolant level and condition; replace coolant. |
| Cooling System Inspection | Every 8,000 mi | Easy–Moderate | Inspect cooling system hoses, radiator, and connections for leaks and damage. |
| Drive Chain Inspection and Lubrication | Every 500 mi | Easy | Inspect drive chain slack and wear, and lubricate. |
| Clutch System Inspection | Every 4,000 mi (first at 600 mi) | Easy–Moderate | Inspect clutch lever freeplay and clutch system operation. |
| Side Stand Inspection | Every 8,000 mi | Easy | Inspect side stand operation, spring, and ignition cut-off switch. |
| Nuts, Bolts, Fasteners Inspection | Every 8,000 mi (first at 600 mi) | Easy | Inspect and tighten major nuts, bolts, and fasteners. |
| Wheels and Tires Inspection | Every 8,000 mi | Moderate | Inspect wheels and tires for damage, wear, and correct air pressure. |
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Easy: basic tools, straightforward Easy–Moderate: varies by task — somewhere between the two Moderate: some mechanical know-how helps Advanced: specialized tools/skill, still DIY-doable Expert: significant experience required Professional: dealer or shop recommended
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