Hurth V Drive Knocking at Idle

[cfd95]

My starboard transmission is knocking at an idle.
Sounds like its coming from bell housing but upon further investigation
it sounds like it's coming from the pump.
If I raise the idle 200 rpm it goes away.
New spark plugs/wires/cap and rotor this season.
Motor runs fine and doesn't miss thru whole RPM range.
First thought was a damper plate but listening with long pry bar it sounds like the pump.
Any help appreciated.
Transmission is a Hurth 630V

 

[380 Manoverboard]

I have the same issue... Thoughts

 

[copb8tx]

I have heard that this can be caused by an engine out of tune and not running as smoothly as it should. I seem to recall someone on the forum simply replacing plugs and wires and it fixed the 'transmission' problem.

Just a thought.

 

[firecadet613]

I have heard that this can be caused by an engine out of tune and not running as smoothly as it should. I seem to recall someone on the forum simply replacing plugs and wires and it fixed the 'transmission' problem.

Just a thought.

I've seen the same. Do a full tune-up - plugs, wires, cap and rotor and see if it goes away. That is going to be your cheapest troubleshooting step.

 

[techmitch]

I have the same issue... Thoughts

I've seen the same. Do a full tune-up - plugs, wires, cap and rotor and see if it goes away. That is going to be your cheapest troubleshooting step.

And make absolutely sure of the correct firing order and plug wire orientation.

 

[Mig22]

http://www.clubsearay.com/index.php?threads/rattling-in-transmission-when-i-put-in-gear.103485/