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– 1986 Yamaha XJ750X Maxim
MANUFACTURER SPECIFICATIONS
Model Yamaha XJ750X Maxim 1986
Motorcycle Style: Standard
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: |
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| Carburetors: |
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| Lubrication System: | 0.6 – 0.7 mm (0.024 – 0.028 in) | ||
| (4) Standard side-draft 33 mm Mikuni CV | |||
| Wet Sump | |||
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Maximum Horsepower XJ750X:
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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 ] | |||
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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) | ||
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| 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) | ||
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| 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 | ||
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| Coils (Owner Replacement): | Secomdary Winding Resistance = 12k | |
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| (2) Dynatek DC1-1, 12Volt, Dual Angled Output, Wasted Spark | ||
| Primary Winding Resistance = 3.0 | ||
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| Secomdary Winding Resistance = 14k | ||
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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) | ||
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| 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.
Posted on June 18, 2019 by Michael Le Pard
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