Yamaha - RD 400 F 79

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Bike Info

CC:
400
RD 400 F Parts and accessories

Service

2 Stroke Tank - Litres:
1800 mL
Chain Freeplay mm:
20-30 mm
Engine Oil quantity (litres):
1500 mL
Fork oil grade:
SAE 10W30 motor oil
Front Fork Oil cc (left leg):
163.5 mL +/- 4 mL
Front Fork Oil cc (right leg):
163.5 mL +/- 4 mL
Gearbox Oil grade:
10W30 SAE Motor Oil
Idle Speed (rpm):
1400 RPM
Spark Plugs Gap (mm):
0.7-0.8 mm
Two Stroke Oil:
JASO FB / ISO-L-EGD made for air cooled engines
Tyre Pressure Back Bar / psi:
28 PSI
Tyre Pressure Front Bar / psi:
26 PSI

Brakes

Front:
Disc
Rear:
Disc
Brake fluid:
DOT 3
Front Disc Size:
267 mm x 7 mm
Front-Pistons-per-caliper:
1
Rear Disc Size:
267 mm x 7 mm
Rear-Pistons-per-caliper:
1

Dimensions

Dry Weight:
158 kg
Fuel Capacity:
16.5 L
Ground Clearance:
149 mm
Length:
2030 mm
Rake:
27.5 degrees
Seat Height:
800 mm
Trail:
108 mm
Wheelbase:
1320 mm
Width:
759 mm

Electrics

Voltage:
12v
Battery:
12N-3A-5.5B
Bulb-Headlight:
12V 35W/35W Sealed Beam
Charging System:
AC Three Phase Magneto
Ignition:
Capacitive Discharge
Ignition Timing:
2.0 mm BTDC
Main Fuse:
20A
Spark Plugs:
B8ES Low Speed/B9ES High Speed
Spark Plugs (Iridium):
BR9EIX

Engine

Type:
Air Cooled 2 Stroke Reed Valve Parallel Twin
Air Filtration:
Paper Element, Dry
Bore x Stroke:
64 mm x 62 mm
Carburation:
Mikuni VM28SS
Compression Ratio:
6.0:1
Displacement:
398 cc
Fuel Minimum Octane Rating:
90
Lubrication System:
Autolube
Red line RPM:
8500
Starting:
Kickstarter
 

Transmission

Chain Number of Links:
95, plus joint
Chain type:
530
Clutch Type:
Wet, Multi-disc Type
Final Drive:
Chain
Gearchange Pattern:
1 Down, 5 Up
Gear Ratio 1st:
2.571
Gear Ratio 2nd:
1.778
Gear Ratio 3rd:
1.318
Gear Ratio 4th:
1.083
Gear Ratio 5th:
0.962
Gear Ratio 6th:
0.889
Primary Drive:
Helical Gear
Primary Drive Ratio:
2.869
Sprocket front:
17
Sprocket rear:
38
Transmission:
Constant Mesh, 6 speed forward

Misc.

Colour Options:
New Pearl White
Frame:
Double Cradle, High Tensile Type
Fuel Control:
Carburetor
Motorcycle Style:
Sport Street
Place of Manufacture:
Japan

Power

Fuel Consumption:
32 km/L @ 60 km/h
Max Power Output:
44 HP
Standing 1/4 mile:
14.0 Seconds
Top Speed:
170 km/h plus

Suspension

Front:
Teloscopic Fork
Front Travel:
140 mm
Rear:
Oil Damper, Coil Spring
Rear Travel:
80 mm

Tyres

Front:
3.25-18 Tubed
Rear:
3.50-18 Tubed

Wheels

Bearing Front Left:
6302RS
Bearing Front Right:
6302RS
Front:
Cast Aluminum
Rear:
Cast Aluminum