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Volvo Penta MD2B speed control question

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Username: akestor

Post Number: 1
Registered: 12-2017
Posted on Friday, December 08, 2017 - 05:42 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Hello all:-) I am rebuilding an MD2B and discovering slowly how it works, but havent yet found info on the throttle control and this is really a riddle for me.. On the attached picture, you can see that the cold start button C is at the "off/up" position blocking the movement of the E and A astern. When C is pushed down, spring D pulls E and A astern were i suppose more fuel is flowing to the injectors for the startup of the engine.So once the engine has started it disengages from the governor probably and sets to the position of the image and idle revolutions(?). Now, if we would like to give throtlle from idle, shouldn't the A move astern? But since the C is now blocking it from doing so,the only option is to go towards the bow were i suppose less fuel is injected and at the end of the travel it should shut down. Is there a chance that the current position of the image is maximum throttle? then i understand that A going towards the bow will diminish the fuel. But if the image shows idle position then the only option is shut down of fuel moving A towards the bow. Also G and F looks like the only way that engages with other parts is only to act as a stopper to E and A. Any input would be much appreciated, thanks.

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