ENGINE SPECIFICATIONS
SPEC
2 - 2
ENGINE SPECIFICATIONS
Item Standard Limit
Engine
Engine type Liquid-cooled, 4-stroke, DOHC ----
Displacement 749 cm
3
----
Cylinder arrangement Forward-inclined parallel 4-cylinder ----
Bore
´
stroke 72
´
46 mm (2.83
´
1.81 in) ----
Compression ratio 11.4:1 ----
Engine idling speed 1,000 ~ 1,200 r/min ----
Vacuum pressure at engine idling
speed15.8 ~ 18.4 kPa
(120 ~ 140 mm Hg, 4.72 ~ 5.51 in Hg)----
Standard compression pressure
(at sea level) 157 kPa
(1.57 kgf/cm
2
, 22.3 psi) at 500 r/min----
Fuel
Recommended fuel Premium unleaded gasoline ----
Fuel tank capacity
Total (including reserve) 23 L (20.2 Imp qt, 24.3 US qt) ----
Reserve only 4.8 L (4.22 Imp qt, 5.07 US qt) ----
Engine oil
Lubrication system Wet sump ----
Recommended oil
Yamalube 4 (20W40) or SAE 20W40 type
SE motor oil (40˚F/5˚C or above)
(Non-Friction modified)
Yamalube 4 (10W40) or SAE 10W40 type
SE motor oil (60˚F/15˚C or below)
(Non-Friction modified)----
Quantity
Total amount 3.6 L (3.2 Imp qt, 3.8 US qt) ----
Without oil filter cartridge
replacement2.6 L (2.3 Imp qt, 2.7 US qt) ----
With oil filter cartridge replace-
ment2.8 L (2.5 Imp qt, 3.0 US qt) ----
Oil pressure (hot) 40 kPa (0.4 kgf/cm
2
, 5.69 psi) at
1,100 r/min ----
Relief valve opening pressure 480 ~ 560 kPa
(4.8 ~ 5.6 kgf/cm
2
, 68.3 ~ 79.7 psi)----
2
ENGINE SPECIFICATIONS
SPEC
2 - 3
Oil filter
Oil filter type Cartridge (paper) ----
Bypass valve opening pressure 180 ~ 220 kPa
(1.8 ~ 2.2 kgf/cm
2
, 25.6 ~ 31.3 psi)----
Oil pump
Oil pump type Trochoidal ----
Inner rotor-to-outer rotor tip clear-
ance0.09 ~ 0.15 mm (0.004 ~ 0.006 in) ----
Outer rotor-to-oil pump housing
clearance0.03 ~ 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/cm
2
, 13.1 ~ 17.8 psi)----
Upper radiator core
Width 414 mm (16.3 in) ----
Height 248 mm (9.76 in) ----
Depth 24 mm (0.94 in) ----
Lower radiator core
Width 211 mm (8.31 in) ----
Height 158 mm (6.22 in) ----
Depth 24 mm (0.94 in) ----
Coolant reservoir
Capacity 0.6 L (0.53 Imp qt, 0.63 US qt) ----
Water pump
Water pump type Single-suction centrifugal pump ----
Reduction ratio 88/47
´
28/25 (2.097) ----
Maximum impeller shaft tilt ---- 0.15 mm
(0.006 in)
Starting system type
Electric starter
Spark plugs
Model (manufacturer)
´
quantity R0256R-10 (NGK)
´
4 ----
Spark plug gap 0.7 ~ 0.8 mm (0.028 ~ 0.031 in) ----
Cylinder head
Maximum warpage ---- 0.06 mm
(0.0024 in) Item Standard Limit
ELECTRICAL SPECIFICATIONSSPEC
2 - 15
ELECTRICAL SPECIFICATIONS
Item Standard Limit
System voltage12 V ----
Ignition system
Ignition system type 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 W / Gy–B ----
C.D.I. unit model (manufacturer) F8T19371 (MITSUBISHI) ----
Ignition coils
Model (manufacturer) F6T549 (MITSUBISHI) ----
Minimum ignition spark gap 6 mm (0.24 in) ----
Primary coil resistance 0.16 ~ 0.21 W ----
Secondary coil resistance 5.0 ~ 6.8 kW ----
Throttle position sensor standard
resistance4 ~ 6 kW----
Charging system
System type AC magneto ----
Model (manufacturer) F4T254 (MITSUBISHI) ----
Nominal output 14 V / 22.5 A at 5,000 r/min ----
Stator coil resistance 0.38 ~ 0.46 W at 20˚C (68˚F) ----
Rectifier/regulator
Regulator type Semiconductor-short circuit ----
Model SH650D-11 (SHINDENGEN) ----
No-load regulated voltage 14.1 ~ 14.9 V ----
Capacity 18 A ----
Withstand voltage 200 V ----
Battery
Battery type GT9B-4 ----
Battery voltage/capacity 12V / 8AH ----
Headlight typeHalogen bulb
Indicator light type ´ quantityLED ´ 5
Bulbs (voltage/wattage ´ quantity)
Headlight R. 12 V 60 W ´ 1 / L. 12 V 51 W ´ 1 ----
Auxiliary light 12 V 5 W ´ 2 ----
Tail/brake light 12 V 5 W / 21 W ´ 1 ----
Front turn signal light 12 V 21 W ´ 2 ----
Rear turn signal light 12 V 21 W ´ 2 ----
Meter light 12 V 1.4 W ´ 2 ----
