Archive for the ‘TX750’ Tag

XS650: TX750 Service and Parts News   2 comments

For those of you who have asked for the Bulletins relating to the TX750 twin. Or as a pdf

  TX750 Service-Parts News.

Parts list.

TX750_TX750A

Intersting thread at ADVRider

 

73 TX750

73 TX750

 

I like these bikes. Had a chequered history. Responsible for the first major motorcycle recall in Europe. Unfortunately motorcycle specific oils weren’t then available. Yamaha simply got too far ahead of itself. Later TX750’s had enlarged sumps, adjustable balancer chains, oil coolers, different gaskets, modified chain adjusters and many other smaller modifications.

These were ground-breakers:

  • Omni-Phase balancer system.
  • Positive Crankcase Ventilation system with fumes  re-directed to the airfilter box.
  • Lead-free petrol compatible valve seats.
  • Twin rear lights.
  • Light-alloy wheel rims.
  • Twin front disc brake.

2 were made over by Porsche. For the 73 racing season. Ran twice. Bol d’Or 24, Le Mans. Thruxton 500, UK. Neither completed the Bol d’Or. Apparently the Porsche engines vibrated worse than the wifes stand-by. Yamaha prepared engines were quickly mounted. One was dropped in the rain. Cam chain sucked a kumara on the other. Compression and race-cam valve lift.  6th at Thruxton.

Bulletins

 

 

Tech Info Memo 20 Jul 1973

Tech Info Memo 20 Jul 1973

 

 

Tech Info Memo 20 Jul 1973

Tech Info Memo 20 Jul 1973

 

 

1972:

  • 300 – Headstock Gusset wiring hole enlargement
  • 302 – Misc. Service Instructions…oil leak, starter chain and sprocket, cam timing, engine lube, crankshaft and conrod inserts, crank oil clearance
  • 304 – Oil tank level
  • 305 – Pump shaft cover seal
  • 353 – tool kit
  • 309 – Oil leak; cam carrier base
  • 313 – loose clutch spring screws
  • 321 – RH footrest/brake pedal installation
  • 327 – Primary Gear noise – backlash
  • 332 – balancer chain noise
  • 334 – upper case blind plug
  • 335 – cam chain tensioner noise
  • 336 – starter clutch noise
  • 337 – irregular clutch engagement
  • 338 – Oil leak: ign points area
  • 345 – Oil leak: lower crankcase studs
  • 346 – crankshaft and rod journal size code location change
  • 365 – parts list addition
  • 370 – replacement crankcase assemblies
  • 381 – valve and valve spring lock design change
  • 390 – crankcase balancer design change
  • 392 – alternator rotor parts list corrections
  • 397 – crankshaft design change
  • 409A – crankcase kit:  noise and oil leak reduction, balancer design change, misc installation instructions

1974: M4….

  • 005 – rear brake cam washer
  • 013 – primary drive – backlash
  • 028 – conrod insert size selection
  • 030 – setup checklist
  • 065 – conrod change

1975: M5…

  • 010 – governer assembly springs

 

03tx750

kool model

 

Intersting thread at ADVRider

TX750 Service-Parts News.

Parts list.

TX750_TX750A

 

TX750 ad

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Posted October 28, 2011 by xscafe in Manual - Service/Parts News, XS Pics

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XS650: XS750 Service Bulletins   Leave a comment

I see someone was looking for M79-031. Service bulletin for XS750E and SE – shift mechanism adjustment.  For those who are interested, some time over the next wek or so I will post the Bulletins  for both twin, TX750 and triple XS750 models up to 81. Need a little time to sort them out and convert to jpeg or pdf.

Ok. Here we go. XS750 triple cylinder. 1976 – 1979. Became the XS850 for 1980-81.

  • ’76 XS750C
  • ’77 XS750D + 2D
  •  ’78 XS750E + SE
  • ’79 XS750F + SF

Look here for the Bulletins. Below is a list of contents …

  • M6-018A-1 … XS750D ’76 Service Data, 2 pages.
  • M6-018A-2 … Engine and Driveline Lubrication
  • M6-020 … XS750D Clutch Boss Nut Replacement
  • M6-030-1 … XS750D Special Tools
  • M6-030-2
  • M6-031-1 … XS750D Parts List Corrections
  • M6-031-2
  • M6-031-3
  • M6-031-4
  • M6-033 … XS750D Set-up Tuning for Best Performance
  • M6-036 … XS750D Installation of Instruments
  • M6-039A-1 … XS750D Driveline Cushion Modification
  • M6-039A-2
  • M6-039A-3
  • M6-039A-4
  • M6-043 … XS750D Front Wheel Set-up
  • M6-044-1 … XS500C/D and XS7850D Cylinder Seal Size and Selection
  • M6-044-2
  • M6-047-1 … XS500C and XS750D Eliminating Excessive Brake Drag
  • M6-047-2
  • M6-063-1 … XS750-2D Service Data
  • M6-063-2
  • M7-011 … XS750D, XS750-2D Special Tools
  • M7-013 … XS750D, XS750-2D Special Accessory Notice
  • M7-022 … XS750D, XS750-2D Oil Sump Modifications and Oil Quantity Changes
  • M7-023-1 … XS650D, XS750D, XS750-2D Changes to Splining of Transmission Gears and Axles
  • M7-023-2
  • M7-029 … XS750D, XS750-2D Driveline Modifications
  • M7-038A-1 … XS750E 1978 Service Data
  • M7-038A-2
  • M7-050 … XS750 Bearing Housing Modification
  • M7-051 … XS750-2D, XS750E Middle Drive Bearing Modification
  • M7-054-1 … XS750E Additional Pre-delivery Services
  • M7-054-2
  • M7-061 … XS750E Defective Rectifier/Regulator Unit
  • M7-073-1 … XS750E 1978 Service Data
  • M7-073-2
  • M7-074 … Shaft Drive Model: RearHub Lubrication XS750, XS1100
  • M
  • M  … I cant find the 1978 Bulletins – will post when found
  • M
  • M79-015-1 … XS750D, XS750-2D Float Pin Repair Kit
  • M79-015-2
  • M79-016-1 … XS750E, SE, F, SF Oil Consumption Diagnosis and Repair
  • M79-016-2
  • M79-016-3
  • M79-024-1 … XS400F, XS750F, SF, XS1100F, SF Conrod Numbering
  • M79-024-2
  • M79-030 … Multi-cylinder 4-strokes: Carb Synchronization
  • M79-031-1 … XS750E, SE Shift Mechanism Adjustment
  • M79-031-2
  • M80-022-1 … XS400, XS650, XS750 Factory Modification Campaign
  • M80-022-2
  • M80-022-3
  • M80-022-4
  • M80-022-5

Posted September 15, 2011 by xscafe in Manual - Service/Parts News

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