It may be the clutch plates are loose. Pull the plate off the top of the tranny 
and adjust them. Consult an AT4 manual to see exactly how to do it. 

Dennis C.
Touché 35-1 #83
Mandeville, LA

Sent from my iPhone

On Sep 13, 2012, at 6:34 AM, Damien Morrissey <[email protected]> 
wrote:

> I have a tranny question about my 1974 Viking 33 with the Atomic 4.   When 
> you move the gear shifter up for forward or down for reverse, there seems to 
> be a long throw of the shifter, almost like it varies the amount of forward 
> or reverse propulsion – then I can apply throttle for speed.  Is this right – 
> or should the shift lever either be in full forward (up), full reverse (down) 
> or neutral (horizontal).
> 
>  
> 
> 
> I should have asked this last summer when I started sailing, but as it was 
> all new to me I thought I would figure it all out.  Now I'm not so sure.
>  
> Last evening I could only get a very small amount of forward propulsion and 
> even less in reverse even with the shifter in the half way position.   Full 
> forward shifter position (up lever) would stall the engine regardless of 
> throttle position.  I had to limp back to the dock by playing with the 
> shifter and throttle positions and restarting the engine every time it 
> stalled out.   Luckily there was no wind on the way back and the calm 
> conditions for those last few hundred metres to my dock allowed me to make 
> headway.  Even that distance of a few hundred metres took almost half an hour.
>  
> There was no noticable vibration to make me thing the folding prop was 1/2 
> deployed, the engine was running great with no load and started fine when it 
> stalled under full load.
>  
> What could be wrong - does this sound like a transmission issue ?
>  
> HELP
>  
> Thanks,
> Damien
> "Melissa Anne"
> Corner Brook, NL
>  
>  
> 
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