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  1. R

    2-STROKE OIL INJECTION - unexplained oil line

    The oil pump Bleed instructions in the Yamaha service manual that I have access to - refer to the bottom part of this post. Step2 in those instructions refer to removal of the air bleed screw. However, the accompanying photo in the manual is not close up enough for me to work out where exactly...
  2. R

    2-STROKE OIL INJECTION - unexplained oil line

    First time trying to bleed air from a 2-stroke oil injection pump on a Yamaha 40hp (3 cylinder). The oil reservoir is inside the cowling. I'm puzzled by there being two oil lines between this reservoir and the oil injection pump. Photo of the reservoir attached below. Also a rough diagram...
  3. R

    Tohatsu small 2-stroke - Tricky diagnosis

    One week ago, the Tohatsu 8hp 2-stroke started and ran well. Now she won't. What really puzzles me is: - She does not respond to starting spray into the carb (no reaction at all), but ... - She will run smoothly and confidently for 5sec when fuel is sprayed directly into a cylinder via a...
  4. R

    Yamaha 703 Control Box - problem with re-assembly of box

    Hello I opened a Yamaha 703 remote control box for the first time, to check wiring. I am now struggling to get the big cover plate back on properly. The key difficulty is that I am unable to line up the 1/4inch dia pin attached to the drum of the neutral throttle lever, with a slot in the...
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    Impellers - type of rubber compound

    Want to find out whether the part no for Yamaha Impellers indicates the type of rubber. I was asked to replace an impeller for a 40HP 2-stroke Yamaha; impeller has part number 44352. But there's a number of "versions" of this impeller online, with different trailing codes. For example...
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