Index > Motorcycle Specs Handbook > Yamaha > 1986
Back to yamaha Motorcycle Specs Index Page
– 1986 Yamaha XJ750X Maxim
MANUFACTURER SPECIFICATIONS
Model Yamaha XJ750X Maxim 1986
ENGINE SPECS
Engine Type:
4-cylinder In-line, 4-stroke
Cylinder Inclination:
Forward 14°
Engine Cooling:
Liquid
Displacement XJ750X:
749 cm³ (45.7 cu. in.)
Compression XJ750X:
11:1
Bore x Stroke XJ750X:
68.0 x 51.6 mm (2.6772 x 2.0315 in)
Combustion Chamber Volume:
17.09 cm³ (1.04 cu. in.)
Cam Arrangement:
DOHC
Valves – Total:
20 total – 5 per cylinder
Valves – Intakes:
(3) 21 mm per cylinder
Valves – Exhausts:
(2) 23 mm per cylinder
Spark Plug Type 1986:
NGK D8EA or Nippon Denso X24ES-U
Carburetors:
NGK DR8ES-L or Nippon Denso X24ESR-U
Lubrication System:
0.6 – 0.7 mm (0.024 – 0.028 in)
(4) Standard side-draft 33 mm Mikuni CV
Wet Sump
Maximum Horsepower XJ750X :
67.1 kW (90 hp) @ 9000 rpm (Cycle Canada – Sep ’85)
Maximum Horsepower XJ700X :
64.1 kW (86 hp) @ 9500 rpm (TotalMotorcycle.com)
55.9 kW (75.01 bhp) @ 10000 rpm
Maximum Torque XJ750X :
7.40 kg·m (53.5 ft·lb) @ 8000 rpm (Cycle Canada – Sep ’85)
Maximum Torque XJ700X :
6.90 kg·m (49.9 ft·lb) @ 8000 rpm (TotalMotorcycle.com)
Power/Weight Ratio XJ750X :
0.379 hp/kg
Power/Weight Ratio XJ700X :
0.363 hp/kg
Quarter Mile XJ750X :
11.66 sec at 186.87 km/h (116.15 mph) (Cycle Canada – Sep ’85)
Quarter Mile XJ700X :
11.79 sec at 181.57 km/h (112.82 mph) (Cycle – Apr ’85)
11.779 sec at 182.87 km/h (113.63 mph) (Cycle Guide – May ’85)
Acceleration 0-60mph XJ750X :
less than 3.20 seconds (still looking)
Acceleration 0-60mph XJ700X :
3.20 seconds (Cycle-Apr ’85)
Redline:
10000 rpm
Gas Mileage – Owner Min.:
38.2 mpg (Imp) • 31.8 mpg (US) • 13.5 km/L • 7.4 L/100 km
Gas Mileage – Owner Avg.:
49.4 mpg (Imp) • 41.2 mpg (US) • 17.5 km/L • 5.7 L/100 km
Gas Mileage – Owner Max.:
66.2 mpg (Imp) • 55.1 mpg (US) • 23.5 km/L • 4.3 L/100 km
Dist. to Reserve – Owner Avg.:
145 km (90 miles)
Dist. per Tank – Owner Max.:
210 km (130 miles)
Fuel Type:
Regular Gasoline
Fuel Type – Owner Preferred:
Regular Unleaded 89 – 91 octane without Ethanol
Fuel Capacity – Total:
13 L (2.86 Imp. gal., 3.43 US gal.)
Reserve Capacity (of Ttl):
3 L (0.66 Imp. gal., 0.79 US gal.)
Oil Type:
SAE 10W30 (API type SE) or 20W40 (API type SE)
Oil Type – Owner Preferred:
10W40 Fully Synthetic w/20% Lucas Oil Stabilizer
Oil Filter – Original:
Yamaha 1L9-13441-11 w/O-ring: 602411(93210-87723)
Oil Filter – Owner Replacement:
FRAM CH6003 (supplied w/O-rings)
Oil Filter – Alternate Replacements:
K&N KN-144 or WIX 24934 or AMSOIL SMF105
Periodic Oil Change (no filter):
2.5 L (2.20 Imp. qt., 2.6 US qt.)
Oil Capacity (with new filter):
2.8 L (2.46 Imp. qt., 3.0 US qt.)
Total Oil Capacity:
3.5 L (3.08 Imp. qt., 3.7 US qt.)
Radiator Capacity (w/all routes):
2.4 L (2.11 Imp. qt., 2.5 US qt.)
Stock Air Filter:
Yamaha Part# 1AA-14451-00-00
High Flow Air Filters:
K&N YA-7080 or UNI Foam NU-2283
Final Gear Oil Type:
SAE 80API “GL-4” Hypoid Gear Oil
Final Gear Oil Capacity:
0.2 L (0.176 Imp. qt., 0.21 US qt.)
Fork Oil Type:
10Wt Fork Oil
Fork Oil Capacity:
389cm³ (13.7 Imp. oz., 13.2 US oz.) per stanchion
Tire Pressue (Front):
177kPa / 1.8kg/cm² / 26psi [ load below 90kg (198lb) ]
196kPa / 2.0kg/cm² / 28psi [ load 90-238kg (198-525lb) ]
206kPa / 2.1kg/cm² / 30psi [ High Speed Travel ]
Tire Pressue (Rear):
196kPa / 2.0kg/cm² / 28psi [ load below 90kg (198lb) ]
275kPa / 2.8kg/cm² / 40psi [ load 90-238kg (198-525lb) ]
226kPa / 2.3kg/cm² / 32psi [ High Speed Travel ]
MISCELLANEOUS SPECS
Transmission Type:
Constant mesh 5-speed
Clutch Type:
Wet/multi-disc
Transmission Operation:
Left foot shift left [1D-4U]
Primary Reduction System:
Spur Gear
Primary Reduction Ratio:
97/58 (1.672)
Secondary Reduction System:
Shaft Drive
Secondary Reduction Ratio:
49/36 x 19/18 x 32/11 (4.179)
Gear Ratio – 1st:
35/16 (2.187)
Gear Ratio – 2nd:
30/20 (1.500)
Gear Ratio – 3rd:
30/26 (1.153)
Gear Ratio – 4th:
28/30 (0.933)
Gear Ratio – 5th:
26/32 (0.812)
Chasis / Forks / Suspension
Frame Type:
Double Cradle
Caster Angle (aka Rake):
31.5°
Trail:
120 mm (4.7 in)
Suspension Type – Front:
Telescopic fork
Shock Absorbers – Front:
Air, coil spring, oil damper
Forks – Size:
38 mm stanchion tubes
Forks – Air Pressure:
10 to 17 psi
Wheel Travel – Front:
150 mm (5.9 in)
Suspension Type – Rear:
Swing arm
Shock Absorbers – Rear:
Coil spring, oil damper
Wheel Travel – Rear:
99 mm (3.9 in)
Wheels / Tires / Brakes
Tire Size – Front:
100/90-19 57H ( 90 mm depth) [ nothing taller is appropriate ]
*** Note – Front:
110/90-19 ( 99 mm depth) is commonly listed but is too tall & will rub the fender at high speeds
Tire Size – Rear:
130/90-16 67H (117 mm depth) [ nothing wider will fit, so don’t bother ]
Owner Recommended Tires:
V-rated Metzeler Lasertecs
Alt. Owner Recommended Tires:
V-rated Dunlop GT501s
Alt. Owner Recommended Tires:
V-rated Bridgestone Battlax BT45s
Wheel Size – Front:
2.15″ cast aluminum 5-spoke
Wheel Size – Rear:
16″ cast aluminum hoop
Brakes – Front:
Dual discs, right hand lever
Brakes – Rear:
Drum, right foot lever
Ignition System:
Hitachi TID14-35 TCI
Generator System:
Hitachi LD119-19 AC Generator (14V, 26A at 5000rpm – 364Watt max)
Battery Type/Capacity:
Yamaha YB14L/12V 14AmpH
Battery Dimensions (LxWxH):
134mm x 89mm x 167mm (5-5/16″ x 3½” x 6-9/16″)
Replacement Battery Option:
YUASA YB14L-A2 12V 14AmpH (Serviceable Lead/Acid)
Owner Recommended Battery:
Westco 12V14L-B 12V 14AmpH 190 CCA (Sealed AGM)
Display Indicators:
Left/Right/Neutral/Oil/High Beam
Starting System:
Electric Starter
Coils (stock):
(2) Hitachi CM12-25, 12Volt, Dual Output, Wasted Spark
Primary Winding Resistance = 2.7
Coils (Owner Replacement):
Secomdary Winding Resistance = 12k
(2) Dynatek DC1-1, 12Volt, Dual Angled Output, Wasted Spark
Primary Winding Resistance = 3.0
Secomdary Winding Resistance = 14k
DIMENSIONS
Overall Length:
2235 mm (88.0 in)
Overall Width:
775 mm (30.5 in)
Overall Height:
1160 mm (45.7 in)
Seat Height:
760 mm (29.9 in)
Wheel Base:
1520 mm (59.8 in)
Min. Ground Clearance:
145 mm (5.7 in)
Min. Turning Radius:
2800 mm (110.2 in)
Wheel Size – Front:
MT2.15″x19″ cast aluminum 5-spoke
Wheel Size – Rear:
MT3.00″x16″ cast aluminum hoop
Tire Size – Front:
100/90-19 57H ( 90 mm depth) [Air pressure in CAPACITIES section below]
Tire Size – Rear:
130/90-16 67H (117 mm depth) [Air pressure in CAPACITIES section below]
Wheel Travel – Front:
150 mm (5.9 in)
Wheel Travel – Rear:
99 mm (3.9 in)
Weight
Wet Weight: XJ750X:
237.6 kg (524 lb) with oil, coolant and full tank (as per Cycle Canada – Sep ’85)
Wet Weight: XJ700X:
232 kg (511 lb) with oil and full tank (as per XJ700X Owners’ Manual)
:
234.7 kg (517 lb) with full tank (as per Cycle – Apr ’85)
Dry Weight:
215 kg (474 lb)
Engine Dry Weight:
90 kg (198 lb)
Please note: Total Motorcycle would like to thank Maxim-X for the above specifications and for Grant J for informing us of this gap in our 1985/86 Yamaha line. We made attempts to contact the webmaster at Maxim-X but all attempts failed. We fear the information at Maxim-X maybe soon lost as their site has not been updated for a long time thus we are trying to save the above information from the internet void. If you are the webmaster for Maxim-X please contact us.
Be the first to comment