Data sheet
Dimensions & weights
- Wet weight
- 231 kg
- Ground clearance
- 150 mm
- Wheelbase
- 1495 mm
Engine & drivetrain
- Engine
- 736 cc · Air-cooled inline-four with four carburetors
- Cooling
- Air cooled
- Transmission
- 5-speed constant-mesh manual
- Final drive
- Chain
- Fuelling
- Carburettor
Fuel & range
- Fuel capacity
- 19 L
Electronics & rider aids
- Cruise control
- No
- ABS
- No
Protection
- Bash plate
- None
- Radiator guard
- No
- Oil cooler guard
- No
- Hand guards
- No
Consumables & service specs
Every value carries its source.
Tyres
- Front
- 3.25-19 4PRHonda CB750K7 Factory Supplement (AnyFlip)
- Rear
- 4.00-18 4PRHonda CB750K7 Factory Supplement (AnyFlip)
Tyre pressures
- Front — solo
- 2.0 kg/cm228 psi; solo rider, cold tyreHonda CB750K7 Factory Supplement (AnyFlip)
- Front — loaded
- 2.0 kg/cm228 psi; with passenger/load, cold tyre — front pressure unchanged from solo per factory tableHonda CB750K7 Factory Supplement (AnyFlip)
- Rear — solo
- 2.25 kg/cm232 psi; solo rider, cold tyreHonda CB750K7 Factory Supplement (AnyFlip)
- Rear — loaded
- 2.8 kg/cm240 psi; with passenger/load, cold tyreHonda CB750K7 Factory Supplement (AnyFlip)
Engine oil
- Viscosity
- SAE 10W-40Honda 4-Stroke Oil or equivalent, API service classification SEHonda CB750 1977 Factory Shop Manual
- Capacity
- 3.5 lTotal capacity including filter/gallery; periodic oil-change-only fill approx. 2.5L per factory service manual (K8-F3 issue, carried forward from K7 spec — no oil-capacity change documented between K7 and K8)Honda CB750 1977 Factory Shop Manual
Brakes
- Fluid type
- DOT 3Front disc brake hydraulic systemHonda CB750K7 Factory Supplement — Inspection & Adjustment (AnyFlip)
Forks
- Oil capacity
- 145-155 mlPer front fork legHonda CB750K7 Factory Supplement (AnyFlip)
Final drive
- Chain
- DID630DL or RK630SD, drive chain slack 20mm630 pitch (non-O-ring vintage chain); lubricate with SAE 80/90 gear oil only; chain joint tool cannot be used on endless-type OEM chainHonda CB750K7 Factory Supplement — Inspection & Adjustment (AnyFlip)
Spark plugs
- Type
- NGK D8EA / ND X24ES-U (standard); NGK D7EA / ND X22ES-U (cold climate); NGK D9EA / ND X27ES-U (high-speed use); NGK DR8ES-L / ND X24ESR-U (Canada)Market/climate-specific plug options per factory supplementHonda CB750K7 Factory Supplement (AnyFlip)
- Quantity
- 4Inline four-cylinder engine, one plug per cylinderHonda CB750K7 Factory Supplement (AnyFlip)
Battery
- Type
- 12V-14AHLead-acid, conventional (non-sealed)Honda CB750K7 Factory Supplement (AnyFlip)
Fuel
- Minimum octane
- 91 octane (low-lead)Period spec called for leaded/low-lead fuel; modern equivalent is 91 AKI unleaded with a lead substitute additive recommended to protect non-hardened valve seats on this pre-unleaded-era engineHonda CB750K7 Factory Supplement (AnyFlip)
Tyre Library
Tyres for this bike and year
Start with this motorcycle’s front and rear sizes. Open a tyre to check the complete fit for this exact bike and year; a size or original-equipment report alone does not confirm it.
Sizes match, but more needs checking
Bridgestone BATTLAX BT46
Matching front and rear sizes exist, but some motorcycle requirements or the front-and-rear pairing still need confirmation.
Still needs checking: source information, load rating, any manufacturer restrictions, front and rear pairing, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
Sizes match, but more needs checking
Metzeler Lasertec
Matching front and rear sizes exist, but some motorcycle requirements or the front-and-rear pairing still need confirmation.
Still needs checking: source information, load rating, any manufacturer restrictions, front and rear pairing, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
Sizes match, but more needs checking
Continental RB 2 / K 112
Matching front and rear sizes exist, but some motorcycle requirements or the front-and-rear pairing still need confirmation.
Still needs checking: source information, load rating, any manufacturer restrictions, front and rear pairing, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Michelin Anakee Adventure
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Michelin Anakee III
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Michelin Anakee Road
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Michelin Anakee Wild
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Pirelli Angel GT
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Pirelli Angel GT II
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Pirelli Angel ST
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Bridgestone BATTLAX Adventure A41
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Bridgestone Battlax Adventure Trail AT41
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Bridgestone BATTLAX Adventurecross AX41
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Bridgestone BATTLAX Adventurecross Scrambler AX41S
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Bridgestone BATTLAX BT-45
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Bridgestone BATTLAX Sport Touring T32
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Bridgestone BATTLAX Sport Touring T33
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Bridgestone BATTLE WING BW501 / BW502
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Bridgestone BATTLECRUISE H50
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Avon Cobra Chrome
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Michelin Commander II
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Michelin Commander III Cruiser
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Michelin Commander III Touring
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Continental ContiClassicAttack
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Continental ContiEscape
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Continental ContiLegend
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Continental ContiMotion
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Continental ContiRoad
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Continental ContiRoadAttack 4
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Continental ContiTour
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Continental ContiTrailAttack 3
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Metzeler Cruisetec
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Pirelli Diablo Powercruiser
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Metzeler Enduro 3 Sahara
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Mitas Enduro Trail-ADV 2
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Mitas Enduro Trail-XT+
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Mitas Enduro Trail+
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Bridgestone EXEDRA G853 / G852
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Bridgestone EXEDRA MAX
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
IRC GP-21F / GP-22R
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Heidenau K60 Scout
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Dunlop K750
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Metzeler Karoo 4
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Metzeler Karoo Street
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Metzeler ME 888 Marathon Ultra
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Pirelli MT 21 Rallycross
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Pirelli MT 60 RS
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Pirelli Night Dragon
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Michelin Road 5
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Michelin Road 6
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Michelin Road 6 GT
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Michelin Road Classic
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Michelin Road W GT
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Metzeler Roadtec 01
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Metzeler Roadtec 01 SE
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Metzeler Roadtec 02
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Metzeler Roadtec Z8 Interact
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Michelin Scorcher 11
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Michelin Scorcher 31
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Michelin Scorcher Adventure
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Pirelli Scorpion Rally
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Pirelli Scorpion Rally STR
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Pirelli Scorpion Trail II
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Pirelli Scorpion Trail III
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Avon Spirit ST
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Mitas Terra Force-R
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Continental TKC 70
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Continental TKC 70 Rocks
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Continental TKC 80
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Continental TKC 80²
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Metzeler Tourance
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Metzeler Tourance Next 2
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
No matching front and rear pair
Bridgestone Trail Wing TW101 / TW42
No complete front and rear size pair in this tyre range matches the selected bike and year.
Still needs checking: load rating, any manufacturer restrictions, approved rim width, speed rating, tube or tubeless setup, a named tyre match.
What breaks first and where.
Primary chain tensioner adjuster screw loosening
MinorOccasionalThe primary chain tensioner adjuster screw/locknut on the SOHC CB750 can loosen over time and with vibration, allowing the tensioner setting to drift and the primary chain to develop excess slack or noise.
Symptoms
- Rattling noise from the primary chain area
- Excess primary chain slack found on inspection
Field repairableYes — Re-tighten and thread-lock the adjuster screw; verify chain slack against factory spec.
Automatic timing advance mechanism wear (points cam/advancer)
ModerateCommonThe centrifugal automatic ignition timing advance unit on the points-cam assembly can develop wear and sloppy advance-weight springs over time, causing erratic or inconsistent ignition timing advance as the mechanism ages. This produces inconsistent running, especially noticeable at higher RPM.
Symptoms
- Erratic idle
- Poor high-RPM running
- Timing advance inconsistent when checked with a timing light
- Engine surging or hesitation
Field repairableYes — Advance unit can be disassembled, cleaned, and springs replaced or upgraded; a well-documented DIY fix within the SOHC4 community.
Cam chain tensioner cracking (rubber-faced tensioner arm)
ModerateCommonThe SOHC CB750's cam chain tensioner uses a rubber-covered, bowed metal tensioner arm that is subject to cracking from years of vibration and heat cycling, developing what owners describe as a 'spider web of cracks.' This is widely documented across the SOHC CB750/900/1100F engine family that shares this tensioner design, and is considered one of the most common age-related failure points on these engines.
Symptoms
- Rattling/slapping noise from the cam chain area, especially at idle or on deceleration
- Visible cracking of the rubber facing on the tensioner arm upon inspection
- Eventual tensioner arm failure allowing excessive cam chain slack
Field repairableYes — Tensioner arm can be replaced with the engine in the frame by removing the cylinder head cover; many owners proactively replace with an updated/aftermarket tensioner arm design.
Where to find things
Common locations for jacks, filters, fluids and fuse boxes. Follow the reference link when a picture helps more than words.
Engine oil fill
Engine-oil filler and level-check point on the engine; use the referenced owner-manual level procedure and keep contamination out of the opening.
ReferenceBrake fluid reservoir
Front reservoir at the handlebar master cylinder and rear reservoir beside the rear master cylinder; use the manual's motorcycle attitude for level checks.
Reference