81 Evinrude 25 HP - No fuel to bottom cylinder

[Bosunsmate]

Re: 81 Evinrude 25 HP - No fuel to bottom cylinder

How thick is that gasket? If its a thick gasket and your mating surfaces are ok i would leave it as is. If its a thin gasket id ring the guy back and ask to double check that with him as you dont want to have to lift the block up again for quite a while.
I normally dont add gasket sealant there but i always get the thick gaskets to do that job.

Also clean your flywheel inner, the nut and the crankshaft thoroughly before you put the flywheel on. Make sure nothing is in that space, no grease, locktite etc. The correct torque is very important

 

[Chinewalker]

Re: 81 Evinrude 25 HP - No fuel to bottom cylinder

Impact drill has no business being anywhere near your outboard when reassembling... Align the keyway, tighten up the nut with a wrench and torque to spec.

 

[cchildr84]

Re: 81 Evinrude 25 HP - No fuel to bottom cylinder

Impact drill has no business being anywhere near your outboard when reassembling... Align the keyway, tighten up the nut with a wrench and torque to spec.

Ok. Good to know. Thanks.

 

[cchildr84]

Re: 81 Evinrude 25 HP - No fuel to bottom cylinder

If I remember correctly the shop manual states to torque down the nuts that hold the powerhead to the exhuast housing. How on earth is one supposed to properly torque these nuts, theres no way you can get a torque wrench and adapter to that nut, that I'm aware of. Im still trying to find someone with a torch so that I can properly bend a wrench for this application.

 

[Chinewalker]

Re: 81 Evinrude 25 HP - No fuel to bottom cylinder

I use a torque wrench on head bolts, crankcase bolts, flywheel nuts and rod cap bolts. Elsewhere, I go by feel...

 

[boobie]

Re: 81 Evinrude 25 HP - No fuel to bottom cylinder

Do you have any flex sockets ?? They work good for torqueing down the power head.

 

[cchildr84]

Re: 81 Evinrude 25 HP - No fuel to bottom cylinder

No, I have a universal joint, but with it and the socket on it there isn't enough room to get it on the nut. Perhaps the flex socket may work.

 

[jasper60103]

Re: 81 Evinrude 25 HP - No fuel to bottom cylinder

No, I have a universal joint, but with it and the socket on it there isn't enough room to get it on the nut. Perhaps the flex socket may work.

Yea, that space looks pretty tight. What did you use to get the power head off?

 

[cchildr84]

Re: 81 Evinrude 25 HP - No fuel to bottom cylinder

On one side I used a distributor cap wrench, and the other just a 1/2" open end box wrench. I used these to get them back on, but once the nut gets to a certain point on the stud you can't turn the wrenches any further and Im not sure that the nuts are tight enough.

 

[AlTn]

Re: 81 Evinrude 25 HP - No fuel to bottom cylinder

what torque is listed for the p/h to ex/hous screws?...I'm like Chine and go by feel on those, in fact, if they all came out w/o any of them snapping off, yours' was a real good day

 

[Bosunsmate]

Re: 81 Evinrude 25 HP - No fuel to bottom cylinder

what torque is listed for the p/h to ex/hous screws?...I'm like Chine and go by feel on those, in fact, if they all came out w/o any of them snapping off, yours' was a real good day

Too right! i always put a coating of something back on them for reinstall and i back them out every couple of years or so and redo it. Unfortunately ive never come across a outboard where the past owner/mechanics did that

 

[cchildr84]

Re: 81 Evinrude 25 HP - No fuel to bottom cylinder

Ok, here is my stoping point from last night.

1.)Does it the armature plate appear to be located properly. When I turn the throttle, first of all it very stiff, but as the armature plate is rotating it's barely making contact with the roller cam. Is there adjustment in the cam roller?

2.) What is the timing screw/stop supposed to be hitting. It doesn't appear that it would be able to make contact with the armature plate, given the current orientation of the armature plate. I looked in the manual for this, but there isn't very much info in this regard.

 

[cchildr84]

Re: 81 Evinrude 25 HP - No fuel to bottom cylinder

Ok, here is my stoping point from last night.

1.)Does it the armature plate appear to be located properly. When I turn the throttle, first of all it very stiff, but as the armature plate is rotating it's barely making contact with the roller cam. Is there adjustment in the cam roller?

2.) What is the timing screw/stop supposed to be hitting. It doesn't appear that it would be able to make contact with the armature plate, given the current orientation of the armature plate. I looked in the manual for this, but there isn't very much info in this regard.]

Any thoughts, you guys' help on this would be greatly appreciated. Thanks.

 

[Bosunsmate]

Re: 81 Evinrude 25 HP - No fuel to bottom cylinder

Its being a while since ive had one of these but here il suggest a few things.
The two mark on the armature plate indicate when the cam roller should start opening the carbs. That should happen i " suppose" around half way on your throttle twisting. If that is approxamately right then your armature is bolted to the right place.
Any adjustment on that roller would i say be in the carb set up.

I dont think ive ever seen a throttle stop on one of these so perhaps they never really get that far advanced to where that one is on the starter.

I think you should work out why its stiff. Check that the wiring is loose and can move/ flex as the plate moves.

A timing light will tell you later whether you have got it right on.

 

[Bosunsmate]

Re: 81 Evinrude 25 HP - No fuel to bottom cylinder

Also, i stand to be corrected on this one, but i dont think the roller matters if it isnt touching much on this motor. If you look in your photo 4 you will see the long piece of metal which goes forward and there is a small metal cylinder with a screw on it. That needs to be tightened in position to start opening the carb when that roller hits between the two armature marks

 

[Bosunsmate]

Re: 81 Evinrude 25 HP - No fuel to bottom cylinder

Heres a photo of one i did a while back.Your set up looks like this one was ( which was correct) before dismantling to fix a crankcase seal

 

[cchildr84]

Re: 81 Evinrude 25 HP - No fuel to bottom cylinder

I asked the same question in another thread, but am not getting any responses. On the kill switch connector, I know the "A" pin is for the kill switch, but can anyone confirm for me that the "B" pin is for the #1/top cylinder/coil and that the "C" pin is for the #2/bottom cylinder/coil? And does it matter where the ground strap for the kill switch is grounded to. Currently I have it grounded to the cylinder head cover. I read the manual, but for me, it's not very clear on this part. I want to try and turn the motor over tonight, so if someone can help me out, I'd greatly appreciate it.

 

[AlTn]

Re: 81 Evinrude 25 HP - No fuel to bottom cylinder

pin ? is correct...grounding point for shorting switch ground should work ok, although I think some share a coil mounting screw. Can you find a pic in your manual of the armature plate, specifically the charge coil, and it's position relative to the carb linkage roller on the throttle control cam? At either the start position or wot position is the charge coil directly over the carb? Somehow the mounting position of the armature plate doesn't look right ie; do you recall the wiring from the charge coil and sensor coming out the side as you have it now, or did it come out the back over the block?

 

[cchildr84]

Re: 81 Evinrude 25 HP - No fuel to bottom cylinder

pin ? is correct...grounding point for shorting switch ground should work ok, although I think some share a coil mounting screw. Can you find a pic in your manual of the armature plate, specifically the charge coil, and it's position relative to the carb linkage roller on the throttle control cam? At either the start position or wot position is the charge coil directly over the carb? Somehow the mounting position of the armature plate doesn't look right ie; do you recall the wiring from the charge coil and sensor coming out the side as you have it now, or did it come out the back over the block?

Since I took that picture I've relocated the wiring from the charge coil to run behind that starboard bracket. That's where it states to run it in the manual, and looking at some old pictures from the starboard view that where it was before I broke the motor down. I look in the manual in the armature plate installation section, but from what I remember off the top of my head the pictures aren't very clear.

See sketch below with regards to the kill switch/coil connector and confirm if you can. The both of the coils have a metal sleeve over the upper mounting screw. Should I put the grounding strap on the top mounting screw of the top coil? I wasn't sure if grounding to the coil would cause damage to the coil in the event of an electrical malfunction.

 

[cchildr84]

Re: 81 Evinrude 25 HP - No fuel to bottom cylinder

I think you should work out why its stiff. Check that the wiring is loose and can move/ flex as the plate moves.

I wasn't using the correct assembly lube on the armature boss. Put the right stuff on there and now it turns great.