6hp F6LMHA very hard to pull the starter cord

[boater7cs]

My 6hp was running great. I run it a few times a week for about 30 minutes at low rpm coming in and out of the harbor. Flush it after every run with fresh water & cooling systems works fine. A few days after the last sail, I couldn't start it. It's very hard to pull the starter cord. Oil was changed 6 months ago & looks good. The motor is mounted on the stern so it's been in an upright position. The flywheel is very hard to turn manually with the pull assembly cover taken off. I took out the spark plug to relieve compression and it's the same. Gear's in neutral & the prop spins freely. The head was replaced a few years ago which cost nearly as much as the engine originally cost - hoping to avoid that again. I hope someone can shed some light on what the issue could be. Thanks!

[99yam40]

I would remove the lower unit to see if that frees it up.( drive shaft going into the lower unit is also attached directly to the crank shaft)
If it does not free up, then the power head will need to be inspected closely to find out what is binding it up

[boater7cs]

I would remove the lower unit to see if that frees it up.( drive shaft going into the lower unit is also attached directly to the crank shaft)
If it does not free up, then the power head will need to be inspected closely to find out what is binding it up

Thanks for your help. lower unit is off & the flywheel turns easily so it's in the drive shaft. I'm unable to separate the gear box unit from the upper half of the lower unit. What looks like a rubber seal around the drive shaft entry into the lower half is corroded so I'm thinking the bushing is corroded. I cant find a shop manual for it so I'm stuck.

[99yam40]

Thanks for your help. lower unit is off & the flywheel turns easily so it's in the drive shaft. I'm unable to separate the gear box unit from the upper half of the lower unit. What looks like a rubber seal around the drive shaft entry into the lower half is corroded so I'm thinking the bushing is corroded. I cant find a shop manual for it so I'm stuck.

I have no idea what you are calling the gear box and upper half of the lower unit

Yamaha Outboard 6HP OEM Parts Diagram for Lower Casing Drive 1 | Boats.net

[boater7cs]

I have no idea what you are calling the gear box and upper half of the lower unit

Yamaha Outboard 6HP OEM Parts Diagram for Lower Casing Drive 1 | Boats.net

Here's the lower unit. It's comprised of two parts. The gear case (not the box as I called it) and the upper portion -- see the break just above the gear oil fill port. I can't separate the two units to get at the drive shaft bushing.



gear box.jpg

[99yam40]

being a sailboat thing, I guess that is an extension to make the lower unit longer.
I have no idea what is in that to keep it from coming apart.
maybe someone else has some input

[boater7cs]

being a sailboat thing, I guess that is an extension to make the lower unit longer.
I have no idea what is in that to keep it from coming apart.
maybe someone else has some input

Yep good point. It's the 5" extension making it a 20" shaft.

[Keithbaja]

I'm no expert on tiny outboards. But on the side of the extension should be a oblong metal piece. Held in with Phillips head screw (2) after removing that. U should sea the shift rod connected with to 10 mm bolts. (2) Loosen and remove the one of your liking. Lwr the gear case. Wellll, after typing my reply you pic decided to post for me. Look on the other side of gearcase. I don't sea it on the side you photographed. And maybe one looking down from the top....

[TownsendsFJR1300]

Seems bolt #5 needs to be removed:

[TownsendsFJR1300]

https://www.boats.net/catalog/yamaha...casing-drive-2

[99yam40]

Seems bolt #5 needs to be removed:

I think the long bolt in his pic lowered down to the prop is that #5.

possibly removing the #15 clip and then digging out the 2 #14 bushings if they are binding up the shaft is the fix.

I am not seeing the things Keith is talking about in the parts break down, but there has to be an extension for the shift shaft somewhere

what year was this motor produced?

[boater7cs]

Seems bolt #5 needs to be removed:

Thanks. #5 is loose & not screwed into the 5" extension. I can't remove it all the way out without removing the propeller shaft. I think the unit is pressed on & I need some kind of tool to separate them.

[TownsendsFJR1300]

Yep, I didn't see it (the LONG, #5), loose in your first pic...

There is "another" short bolt #5, at the front/above the leading edge.

Is that out? .

[boater7cs]

I'm no expert on tiny outboards. But on the side of the extension should be a oblong metal piece. Held in with Phillips head screw (2) after removing that. U should sea the shift rod connected with to 10 mm bolts. (2) Loosen and remove the one of your liking. Lwr the gear case. Wellll, after typing my reply you pic decided to post for me. Look on the other side of gearcase. I don't sea it on the side you photographed. And maybe one looking down from the top....

Thanks. I looked and there's nothing on the other side or the top that could be unscrewed.

[boater7cs]

Yep, I didn't see it (the LONG, #5), loose in your first pic...

There is "another" short bolt #5, at the front/above the leading edge.

Is that out? .

Yep, that's out too. I can separate the two units by about 1/8" only and the join is really tight -- that's why I think it's either pressed on or maybe salt corroded the two pieces together