Yamaha YZF-R7 Specs (1999)
The Yamaha YZF-R7′s chunky frame screams ‘racer’, and there’s Ohlins forks and rear shock too. Ride it and it’s as good as you’d hope. Reassuring stability is combined with phenomenal precision that belies regular bikes. Ditto brakes.
The following technical specification applies for Yamaha YZF-R7 1999 models. Herein you will find detail information about the sport bike’s engine system (displacement bore x stroke, displacement, compression ration), transmission, dimension, electrical components specs, etc. (source: Yamaha YZF-R7 1999 Service Manual)
DIMENSION
| Overall length | 2,060 mm (81.1 in) |
| Overall width | 720 mm (28.3 in) |
| Overall height | 1,125 mm (44.3 in) |
| Seat height | 840 mm (33.1 in) |
| Wheelbase | 1,400 mm (55.1 in) |
| Minimum ground clearance | 120 mm (4.72 in) |
| Minimum turning radius | 3,800 mm (150 in) |
| Weight: Wet (with oil and full tank) Dry (without oil and fuel) Maximum load allowed |
207 kg (456 lb) 176 kg (388 lb) 317 kg (699 lb) |
ENGINE
| Engine type | Liquid-cooled, 4-stroke, DOHC |
| Cylinder arrangement | Forward-inclined parallel 4-cylinder |
| Displacement | 749 cm³ |
| Bore x stroke | 72 x 46 mm |
| Compression ratio | 11.4:1 |
| Engine idling speed | 1,000 ~ 1,200 r/min |
| Vacuum pressure at engine idling speed | 15.8 ~ 18.4 kPa |
| Compression pressure (STD) | 157 kPa (1.57 kgf//cm², 22.3 psi) at 500 rpm |
| Fuel: Recommended fuel Fuel tank capacity Total (including reserve) Reserve only |
Premium unleaded gasoline
23 L (20.2 Imp qt, 24.3 US qt) |
OIL
| Lubrication system | Wet sump |
| Recommended oil | Yamalube 4 (20W40) or SAE 20W40 type SE motor oil |
| Quantity Total amount Without oil filter cartridge replacement. With oil filter cartridge replacement. |
3.6 L (3.2 Imp qt, 3.8 US qt) 2.6 L (2.3 Imp qt, 2.7 US qt) 2.8 L (2.5 Imp qt, 3.0 US qt) |
| Oil pressure (hot) | 40 kPa (0.4 kgf/cm², 5.69 psi) at 1,100 rpm |
| Relief valve opening pressure | 480 ~ 560 kPa (4.8 ~ 5.6 kgf/cm², 68.3~79.7 psi) |
| Oil filter Oil filter type Bypass valve opening pressure. |
Cartridge (paper) 180 ~ 220 kPa (1.8 ~ 2.2 kgf/cm², 25.6 ~ 31.3 psi) |
| Oil pump Oil pump type Inner-rotor-to-outer-rotor- tip clearance. Outer-rotor-to-oil-pump- housing clearance. |
Trochoidal 0.09 ~ 0.15 mm (0.004 ~ 0.006 in) 0.03 ~ 0.08 mm (0.001 ~ 0.003 in) |
COOLING SYSTEM
| Radiator capacity | 2.75 L (2.42 Imp qt, 2.91 US qt) |
| Radiator cap opening pressure | 95 ~ 125 kPa (0.95 ~ 1.25 kgf/cm², 13.1 ~ 17.8 psi)) |
| Upper radiator core width height depth Lower radiator core width height depth |
414 mm (16.3 in) 248 mm (9.76 in) 24 mm (0.94 in) 211 mm (8.31 in) |
| Coolant reservoir capacity | 0.6 L (0.53 Imp qt, 0.63 US qt) |
| Water pump Water pump type Reduction ratio |
Single-suction centrifugal pump 88/47 x 28/25 (2.097) |
STARTING SYSTEM
| Type | Electric starter |
| Spark plugs Model (manufacturer) Quantity Spark plug gap |
R0256R-10 (NGK) 4 0.7 ~ 0.8 mm (0.028 ~ 0.031 in) |
TRANSMISSION and FRAME
| Transmission type | Constant mesh, 6-speed |
| Primary reduction system | Spur gear |
| Primary reduction ratio | 88/47 (1.872) |
| Secondary reduction system | Chain drive |
| Secondary reduction ratio | 43/17 (2.529) |
| Operation | Left foot operation |
| Gear ratio: 1st 2nd 3rd 4th 5th 6th |
38/17 (2.235) 36/19 (1.895) 35/21 (1.667) 33/23 (1.435) 31/24 (1.292) 27/23 (1.174) |
| Frame type | Diamond |
| Caster angle | 22.7° |
| Trail | 95 mm (3.74 in) |
TIRE, SUSPENSION and BRAKE
| Tire type | Tubeless |
| Tire size: Front Rear |
120/70 ZR17 (58W) 180/55 ZR17 73W |
| Brake type: Front Diameter x thickness Rear Diameter x thickness |
Dual-disc 320 x 5 mm (12.6 x 0.20 in) Single-disc 245 x 5 mm (9.65 x 0.20 in) |
| Suspension: Front Rear |
Telescopic fork Swingarm (link suspension) |
| Shock absorber: Front Rear |
Coil spring/ Oil damper Coil spring/ Gas-oil damper |
| Wheel type | Cast wheel |
| Wheel travel: Front Rear |
120 mm (4.7 in) 138 mm (5.43 in) |
ELECTRICAL
| System voltage | 12 V |
| Ignition system | C.D.I. |
| Ignition timing | 5° BTDC at 1,100 r/min |
| Advanced timing | 55° BTDC at 5,000 r/min |
| Advancer type | Throttle position sensor and electrical |
| Pickup coil resistance/color | 421 ~ 569 Ohm / Gy–B |
| C.D.I unit Manufacturer | F8T19371 (MITSUBISHI) |
| Ignition coils: Model (manufacturer) Minimum ignition spark gap Primary coil resistance Secondary coil resistance |
F6T549 (MITSUBISHI) 6 mm (0.24 in) 0.16 ~ 0.21 Ohm 5.0 ~ 6.8 kOhm |
| Charging system | AC magneto |
| Battery type | GT9B-4 |
| Battery capacity | 12V / 8AH |
| Headlight type | Halogen bulb |
| Bulb (voltage/wattage x quantity): Headlight Auxiliary light Tail/brake light Turn signal light Meter light |
R. 12 V 60 W x 1 / L. 12 V 51 W x 1 2 12 V 5 W x 2 12 V 5 W / 21 W x 1 12 V 21 W x 4 12 V 1.4 W x 2 |
| Fuses (amperage x quantity): Main fuse Headlight fuse Signaling system fuse EFI fuse ECU fuse Radiator fan fuse Backup fuse (odometer) |
30 A x 1 20 A x 1 20 A x 1 20 A x 1 7.5 A x 1 7.5 A x 1 7.5 A x 1 |
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