Honda CBR 400 Repair Manual
Specifications and Main Features
- Type of engine. 399cc, inline 4-cylinder.
- Standard spark plug used is NGK CR8EH9 or Nippondenso U24FER-9
- Electrode gap has a measurement of 0.8 to 0.9 mm
- Idle rpm Certification is 1300±100 rpm
- At maximum difference between carburetors synchronization: 30 mmhg
- Valve clearances COLD engine:
- Inlet range is set from 0.12 to 0.18 mm
- Exhaust range is set from 0.17 to 0.23 mm
- In cylinder compresion psi the range is 156 to 213 psi, 10.8 to 14.7 bar
- Oil pressure at warm temperature is (5.0 Bar) 71 psi at a rate of 7000rpm, in oil at 80 degrees celsius.
- API grade SE, SF or SG oils are recommended.
- Oil viscosity grade is SAE 10W40
- Model J and K oil change capacity amounts to 2.9 litres, oil and filter change amounts to 3.1 litres. Model L oil change capacity amounts to 3.2 litres, oil and filter change amounts to 3.4 litres. Models N and R oil change capacity amounts to 3.0 litres, oil and filter change amounts to 3.2 litres.
- Coolant capacity for radiator and engine has a measurement of 2.0 litres and reservoir has 0.3 litre fluid capacity.
- The recommended brake fluid is D0T4.
- The recommended drive chain slack for J, K models is between 10 to 20 mm, while for L, N and R models is between25 to 15mm.
- Recommended throttle cable freeplay is 2 to 6 mm.
- Recommended tyre pressure ranges for the front and rear are:
- Rider only: 33 psi (2.25 Bar) / 33 psi (2.25 Bar)
- Rider and passenger: 33 psi (2.25 Bar) / 36 psi (2.50 Bar)
Frequently Asked Questions
Q: What type of spark plugs should I use for the Honda CBR400RR?
A: For the CBR400RR, he should use the NGK CR8EH-9 or the Nippondenso U24FER-9 spark plugs.
Q: What is the correct electrode gap for the spark plugs?
A: An electrode gap of 0.8 to 0.9 mm can be regarded as ideal.
Q: How do I check the engine oil level?
A: First, start the engine and let it warm up fully, then if the engine is cold stop it and check the oil level using the dipstick.
Q: What type of oil should I use for this motorcycle?
A: The recommended oil is API grade SE, SF or SG which is a SAE 10W40 motor oil.
Q: How frequently should I replace the engine oil?
A: You can replace the engine oil after reaching a mileage of 4000 miles or at least after 6 months, whichever is reached earliest.
Q: Honda CBR400RR has what capacity of coolant?
A: As for the engine and the radiator it has a capacity of 2.0 litres and for the reservoir the capacity is 0.3 litre.
Q: What is the procedure for adjusting throttle cable freeplay?
A: Freeplay of a throttle cable can be adjusted to 2 to 6 mm by loosening the lock nut at the centre of the throttle end of the cable and turning the adjuster in until the required value is reached.
Q: Can I just ignore a low brake fluid level?
A: No, do not ignore a low brake fluid level as it indicates you need to fill the brake fluid system with DOT 4 hydraulic fluid and inspect the system for any possible leakage; leaks if present, need to be fixed promptly while the system is filled with the necessary fluid.
User Manual
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