Menu
🏍️
Bikes
⭐
Reviews
⚖️
Compare
📚
Guides
📊
Samples
camera_alt
Free Inspection
Start a new bike check
Privacy
Terms
All Bikes/Honda/Cb400 (likely Cb400n/cb400t)

Honda Cb400 (likely Cb400n/cb400t)

Naakt

Lichaam

🔧 Service Schedule & Parts

Affiliate · we may earn
📍 What's due on yours?
CB400T/CB400N Hawk II (air-cooled parallel twin, SOHC, ~395cc)
Service item Every Typical cost Parts
🛢️ Engine oil + oil filter 3,000 km / 2,000 mi or 6 mo $30-60 🛢️ Buy →   ⚙️ Buy →
🌬️ Air filter 6,000 km / 3,500 mi — 🌬️ Buy →
⚡ Spark plugs 6,000 km / 3,500 mi — ⚡ Buy →
🔧 Valve clearance check 12,000 km / 7,500 mi $150-300
🔗 Chain & sprockets 20000-30000 km (replace) $100-200 🔗 Buy →
🛑 Brake pads 10000-20000 km $25-50 🛑 Buy →
💧 Brake fluid 24,000 km / 15,000 mi or 2 yr —
🛞 Tires 15000-25000 km $150-300 🛞 Buy →
🔩 Major service 12,000 km / 7,500 mi $200-400
💰 Annual upkeep ~$250-500 🔩 Reliability 7/10 Late 1970s air-cooled budget commuter twin; short service intervals due to age, carb sync and ignition maintenance are critical, parts availability declining.

Wat kopers moeten weten

⚙️

Torsion Bar Valve Springs

The CB400T used an unusual torsion bar valve spring system instead of conventional coil springs, which was innovative but can be a maintenance headache — inspect carefully as worn components are harder to source today.

🔧

Watch the Carbs

The twin CV carburetors are prone to gumming up from ethanol-blended fuels after sitting, so always check for smooth throttle response and clean idle — a full carb rebuild is often needed on neglected examples.

💰

Strong Beginner Resale

These bikes hold steady value in the classic commuter market due to their approachable LAMS-friendly power and retro appeal, making well-kept examples surprisingly easy to resell if you decide to upgrade.

Top 10 Accessories

Curated picks for the Honda Cb400 (likely Cb400n/cb400t) — owned, ridden, recommended.

Affiliate · we may earn

Veel voorkomende problemen

🔥 2 CRITICAL
⚠️Carb jets clogged from old fuel sitting MODERATE

Cold start, idle quality, hesitation under throttle

Fix cost: $50-$150
⚠️Cam chain tensioner wear causes rattling MODERATE

Cold startup rattle disappearing once warm

Fix cost: $80-$200
🔥Rectifier/regulator failure kills battery SERIOUS

Battery voltage at idle, check for overcharging

Fix cost: $60-$180
🔥Fork seals leaking oil onto front brake SERIOUS

Oil residue on fork lowers and front wheel

Fix cost: $100-$250

✅Checklist vóór aankoop

☐Cold start the bike before warming up
☐Check for cam chain rattle at startup
☐Inspect forks and brake disc for oil
☐Test battery voltage under load at idle

Solid, simple bike if maintained regularly

More Honda Cb400 (likely Cb400n/cb400t) Guides

More from Honda

View all Honda models →

Community Reviews

Discussion

Frequently Asked Questions

What are common problems with the Honda Cb400 (likely Cb400n/cb400t)? +

Carb jets clogged from old fuel sitting: Cold start, idle quality, hesitation under throttle (moderate) | Cam chain tensioner wear causes rattling: Cold startup rattle disappearing once warm (moderate) | Rectifier/regulator failure kills battery: Battery voltage at idle, check for overcharging (serious)

Is the Honda Cb400 (likely Cb400n/cb400t) good for beginners? +

Not really — the Honda Cb400 (likely Cb400n/cb400t) is better for experienced riders.

Is the Honda Cb400 (likely Cb400n/cb400t) reliable? +

Owners report 2 critical issues to watch for on the Honda Cb400 (likely Cb400n/cb400t), notably: Rectifier/regulator failure kills battery (Battery voltage at idle, check for overcharging). Buy with a pre-purchase inspection.

Is the Honda Cb400 (likely Cb400n/cb400t) good for daily use? +

Better as a weekend/track bike than a daily — it's a specialist machine.

What gear should I buy for a Honda Cb400 (likely Cb400n/cb400t)? +

Motoryk has curated a Top 10 gear list specifically for the Honda Cb400 (likely Cb400n/cb400t), covering engine oil, tires, chain, battery, and brake pads — see motoryk.com/bikes/honda/cb400-likely-cb400n-cb400t/top10. Each pick is matched to this bike's spec.