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1975 Suzuki GT750M Engine

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  • Note:
    • to the right are the three known head gasket styles used over the length of production (excluding the 'split head' variant sold only in Japan). The earliest is on the left (note the un-blanked areas at the outer edges), the thick version that replaced it during the J production, and the one on the right is the thinner version introduced at the start of the 1975 model year.

The above changes were implemented, per service bulletin GT-7 at engine 57533 and frame 52823.

See Richard's the Pink Possum web site for injector oil pump details as well as in the Appendices section of this document.

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  • The radiator used the same full plastic grill that covered the front and sides of the radiator as used in 1974 - new for late 1975 was the addition of a cushioning o-ring to be used with a modified set of four mounting screws introduced at frame number 58021. This required larger mounting screw holes in the radiator grill which also changed part numbers. The photo shows stainless steel reproduction parts - the originals (09139-05012) had Phillips heads, rather than Allen heads.
  • Possibly as a cost cutting measure, one chrome radiator hose cover (part number 17856-31000) on the upper radiator hose was eliminated and only one was installed at the end nearest the radiator. The same is true for the A and the B models.

  • As previously offered, the kick starter was now labelled on the right side engine cover, and the gear shift pattern cast into the left side drive sprocket cover. Also worth noting is that the oil filler cap for the transmission oil is threaded in the early model years, and then changed over to a push fit (the original part number is 09259-20003 changing to 09259-19001 for the 1975 model year).

  • The kick start lever is fairly straight when compared to the post-1973 models, and the rubber cover had a Suzuki "S" embossed in the middle on one side.

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