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  1. jcr6502

    Yamaha 50hp Carb Orings too small on Silencer facing side

    Ive checked multiple sources too and agree the part number is correct, but the calipers tell a different story. Ill go through my media and find something from assembly.
  2. jcr6502

    Yamaha 50hp Carb Orings too small on Silencer facing side

    The parts listing references part 17 which is O ring 93210-35M-86-00 for the Silencer facing side of the carb. I have noticed the ID of this to be a few mm smaller than the OD of the carb machining it sits on. Stretching the ring to make it fit, albeit temporarily makes it too thin for the...
  3. jcr6502

    Initial Jetting on Yamaha 50hp 4 stroke outboards

    As a side note, Ive noted upon assembly that the carb O-ring annotation 17 in the diagram for the manifold, 93210-35M-86-00 is too small to effectively seat on the carb for reassembly. I cant be the first person to notice this. A typo in the parts catalogue?
  4. jcr6502

    Initial Jetting on Yamaha 50hp 4 stroke outboards

    The valve on carb thank you, as it stands the valve measured 27mm after 5 minutes, so according to the manual its within spec, 2mm longer than carb 3. Thank you for the info it was most helpful.
  5. jcr6502

    Initial Jetting on Yamaha 50hp 4 stroke outboards

    Thank you for the prompt reply, it was most helpful Apologies, T50TLRB Having completed and checked carb 1 the results are 1 - 116 2 - 126 3 - 124 4 - 114 Based on the info you had provided it looks like the PO swapped jets 1 and 3. All pilot screws were 2 1/8 except for carb...
  6. jcr6502

    Initial Jetting on Yamaha 50hp 4 stroke outboards

    Im mostly through the carbs and while the pilots are all 39's. The main Jets are 126/124/114 for carbs 2/3 and 4...[Top-down] havent opened 1 yet but will update when I clean that one. Did they arrive from the factory with a certain compliment. All different? Did the middle cylinders run...
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