Mercury 20hp 1971 pull start, shift adapter, wire help

kenters

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Jun 25, 2010
Messages
23
Mercury 20hp 1971 pull start, shift adapter, wire help

I Have a 200 (20hp) mercury, serial number 3142462.

The rope broke on the pull start (the spring didn't bend or deform). Picked up a new rope put everything back together. Tested it out a few times in the driveway (in a can full of water) worked perfect. Trailered the boat to the lake, used pull start no problems. Took a quick test drive around the lake ( about 5 mins). Came back to the dock turned off the engine, few mins later tried to pull start and wasnt engaging. Took it apart and back together and i can't get the tabs to engage unless i jerk the rope fast. I have one little spring in there to pull the tabs out.

My next issue is... I'm converting my tiller to a r/c. I have a control box off a 1968 mercury with the cables and the wires (wires are cut before the battery). My throttle cable attached with out a problem. But my shift cable is not comming together as easy as i had wished. I found a mercury remote control attaching kit (part# 826633a 1). But its about $150.00, and i think i only need the part that adapts the shift cable to the shifter. Can i just buy that part? Do i need all the parts in the attaching kit? Will that kit even work for me or will i just be wasting my money?

Finally how should i wire the two (mercontrol and mercury outboard) together. I have 6 pins comming out of the outboard (i know the two big ones are for pos and neg comming from the battery) but i don't about the other pins. I have 4 wires comming from the Mercontrol (colors are faded) Blue, orange, black, white. I think these are the colors of the wires from the outboard (very weathered and dirty) black, brown(probally red), Yellow, Tan(probally white), then theres a big red and a big black ( i know what these are).

Any help you could give would be great.

Kenters
 

Wingedwheel

Lieutenant Junior Grade
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Jun 16, 2009
Messages
1,071
Re: Mercury 20hp 1971 pull start, shift adapter, wire help

Fixing the recoil problem may be as simple as tightening the sheave shaft nut.
 

kenters

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Joined
Jun 25, 2010
Messages
23
Re: Mercury 20hp 1971 pull start, shift adapter, wire help

Yeah that's what I orginaly thought. But I have about 60lbs of torque on it, I don't think the lid was made to handel much more.

The guy at the shop told me to use a sticky grease.

Any other ideas?
 

kenters

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Joined
Jun 25, 2010
Messages
23
Re: Mercury 20hp 1971 pull start, shift adapter, wire help

(self recoiling)pull start update-

ok I eliminated the wavy washer and used a rubber o-ring to make the retainer plate engage and open the pawls, this works to get the proper "fit" against the sheave bolt. I'd like to get a piece of delron or phenolic to make a spacer, have any of you tried this?

This provides the friction to kick the pawl out but it seems way to tight when it recoils, I will try a run test in the AM

I can't believe the entire starter mechanism relies on the wavy washer to provide the force to engage the retainer plate. if that was the design perhaps they should have considered leaving the flywheel exposed to rope start the engine.

Plez help me see this in a new light.
 

Mazey6

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Joined
Aug 23, 2010
Messages
6
Re: Mercury 20hp 1971 pull start, shift adapter, wire help

HI,
I've just aquired a 1971 20hp Mercury 200 engine. it also has a problem getting the fingers to bit when trying to start, but they fly out easy enough when the assy is off the motor. did you get your problem resolved to your satisfaction? as i would like to know your findings before i start taking it apart.

Regards
 

andymren

Recruit
Joined
Dec 5, 2010
Messages
2
Re: Mercury 20hp 1971 pull start, shift adapter, wire help

Hi,
I would like to know if you have to attach the remote control to the shifter of your 20 hp. I have the exact same problem.
Thanks-Andy
 
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