85 Honda Spree

Figured someone on this board might have fixed up a Honda Spree. Not getting much luck on other non moped boards.

Picked up an 85 50cc Spree over the weekend… non-running condition.

Took the carb off and cleaned thoroughly, removed the reed valve and seat and noticed the engine case is full of gas. Checked the reeds and they seem good. So clearly there’s a fuel issue. This thing has a vacuum petcock so I applied negative pressure on the line and very little gas came out. However it does have a slow drip about every five seconds which is where I think the excess fuel is coming from and flooding the engine. Ordered a new petcock so hoping that resolves the excess fuel issue.

Is there a good way to clear all that old gas out of the engine? Maybe crank it over with the plug out and hope it comes out..

Re: 85 Honda Spree

Hondaspree.net

Re: 85 Honda Spree

Very nice considerate answer stephen..thats a whole lot better than flameing him for asking (edited)

Re: 85 Honda Spree

I don't hate on scooters, but I don't know much about them either, that site could hook him up i would assume.

Re: 85 Honda Spree

Yeah I’m checking there as well. Figured I’d throw it out there on this site for overall mechanical expertise. Saw a few other threads come up here in a search and thought to check, maybe some of them dudes are still around idk.

Really just curious what people are doing when their 2 stroke engine gets flooded. I get the carb drain but not sure about gas in the engine. Guess I could just flip it and dump it out. Which also makes me wonder what the impact when old ethanol gas breaks down inside an engine case because we know what it does to a carb.

Re: 85 Honda Spree

I used to ride my Garelli to the Honda dealer to look at the spree lol

Re: 85 Honda Spree

Are you saying tge crankcase is full of gas or just the cylinder

Re: 85 Honda Spree

hondaspree.net is dead. I recently came across an 84 and needed some advice and parts. I have multiple posts that still have not been commented on in weeks. I was able to figure it out and have moved on. Anyway the 84 had the same issue. I removed the oil injector pump and drive. Used a hand operated vacuum pump accessing the crankcase through the oil injector opening and removed the gas. Reinstalled the oil injector and mine fired right up and have had no issues. I did also replace the petcock with a new one.

Re: 85 Honda Spree

Lovers of Honda spree scooters Facebook page is your best bet ! I’ve had a few sprees they’re a blast

Re: 85 Honda Spree

> Kenny Shinneman wrote:

> -------------------------------------------------------

> hondaspree.net is dead.

That's exactly when knowing how to do a search comes in handy . Might have saved someone a few weeks wait . ;)

Re: 85 Honda Spree

Cylinder… but all the way up to the bottom of the reeds. Dumped most of it out for now but Im sure theres still a bunch just pooling in there. 99% sure this is due to the petcock vacuum failing so I have another on the way.

Figure this is causing ‘part’ of the non running issue.

Re: 85 Honda Spree

Good idea, may try that or siphon it out through the reed manifold.

Curious whether you used an inline filter and shut off valve too?

Re: 85 Honda Spree

I did use an inline filter but no shut off valve. Just confirmed the new Petcock shut off completely when at rest.

Re: 85 Honda Spree

Pushrod Fifty /

When it happened to me I took the engine out and turned it upside down to drain it. Your carb float needle is probably bad. The rubber tip or aluminum tip is worn, letting gas run through unchecked. Check for a crankcase drain screw. If you remove the pipe you can crank it over with sparkplug in but disconnected, a pan underneath with the gas line pinched off to get most the gas out.

Re: 85 Honda Spree

> Luna Moto wrote:

> -------------------------------------------------------

> Lovers of Honda spree scooters Facebook page is your best bet ! I’ve had

> a few sprees they’re a blast

i'm a mod on that, it's the fastest growing facebook group I'm in. it's crazy, like +3-5 people a day

For the case filling up, that's likely a combo of things. 1st is the petcock is clearly not shutting off when there's no vaccum. But 2nd the carb's float isnt sealing either. If that worked even with a bad petcock it'd just fill up the carb and shut off. So your float is stuck, or the needle is damaged or dirty, or something of the like.

Re: 85 Honda Spree

hondaspree.net is still fair I think, I havent been in a minute. All the old heads are on the FB group tho, Motormike Mike Brawner is a goldmine

Re: 85 Honda Spree

> Born to be WillD wrote:

> -------------------------------------------------------

> > Luna Moto wrote:

>

> > -------------------------------------------------------

>

> > Lovers of Honda spree scooters Facebook page is your best bet ! I’ve

> had

>

> > a few sprees they’re a blast

>

> i'm a mod on that, it's the fastest growing facebook group I'm in. it's

> crazy, like +3-5 people a day

>

> For the case filling up, that's likely a combo of things. 1st is the

> petcock is clearly not shutting off when there's no vaccum. But 2nd the

> carb's float isnt sealing either. If that worked even with a bad petcock

> it'd just fill up the carb and shut off. So your float is stuck, or the

> needle is damaged or dirty, or something of the like.

Yeah I never got into fb but seems like the groups is where its at. May have to sign up and check it out.

I pulled the carb off and cleaned everything out really well, so once I get the new petcock on there I’ll check that next. If it still floods it may be time to rebuild the carb or get a q tip with some metal polish and try that approach. The last owner bought a new carb to put on it so I stuck that back on after cleaning it out. Also cleaned out the keihin that was original and also came with it. Wanted to put that back on but the bolts for the new one didn’t fit the old one. Smh

Re: 85 Honda Spree

> Kenny Shinneman wrote:

> -------------------------------------------------------

> I did use an inline filter but no shut off valve. Just confirmed the new

> Petcock shut off completely when at rest.

So I ‘reset’ the vacuum diapraghm in the petcock per the manual and hit it with compressed air from the top. Replaced it, connected the gas line, then primed the vacuum line with negative pressure and fuel flowed to the carb as expected. Reconnected the vacuum line then without it running (doesn’t run yet), removed the fuel line and it drained out what was in the line and stopped flowing. So the fuel issue for now seems to be resolved. Next thing I’ll try is priming the fuel line and opening the carb drain screw to see if the float is working or if it just pours out the bottom.

Re: 85 Honda Spree

> S C wrote:

> -------------------------------------------------------

> > Kenny Shinneman wrote:

>

> > -------------------------------------------------------

>

> > I did use an inline filter but no shut off valve. Just confirmed the

> new

>

> > Petcock shut off completely when at rest.

>

> So I ‘reset’ the vacuum diapraghm in the petcock per the manual and hit

> it with compressed air from the top. Replaced it, connected the gas

> line, then primed the vacuum line with negative pressure and fuel flowed

> to the carb as expected. Reconnected the vacuum line then without it

> running (doesn’t run yet), removed the fuel line and it drained out what

> was in the line and stopped flowing. So the fuel issue for now seems to

> be resolved. Next thing I’ll try is priming the fuel line and opening

> the carb drain screw to see if the float is working or if it just pours

> out the bottom.

With the bowl drain open , there's no build up of fuel to close the valve . Fuel will simply keep flowing as long as the petcock allows .

Better polish the float valve seat with q tips and Brasso or the like . It should be shiny clean with no deformations . Same goes for the float valve needle , if it's metal . If rubber tipped , it should be somewhat supple and conical with no deformation .

Re: 85 Honda Spree

> P D wrote:

> -------------------------------------------------------

> > S C wrote:

>

> > -------------------------------------------------------

>

> > > Kenny Shinneman wrote:

>

> >

>

> > > -------------------------------------------------------

>

> >

>

> > > I did use an inline filter but no shut off valve. Just confirmed the

>

> > new

>

> >

>

> > > Petcock shut off completely when at rest.

>

> >

>

> > So I ‘reset’ the vacuum diapraghm in the petcock per the manual and

> hit

>

> > it with compressed air from the top. Replaced it, connected the gas

>

> > line, then primed the vacuum line with negative pressure and fuel

> flowed

>

> > to the carb as expected. Reconnected the vacuum line then without it

>

> > running (doesn’t run yet), removed the fuel line and it drained out

> what

>

> > was in the line and stopped flowing. So the fuel issue for now seems

> to

>

> > be resolved. Next thing I’ll try is priming the fuel line and opening

>

> > the carb drain screw to see if the float is working or if it just

> pours

>

> > out the bottom.

>

> With the bowl drain open , there's no build up of fuel to close the

> valve . Fuel will simply keep flowing as long as the petcock allows .

>

> Better polish the float valve seat with q tips and Brasso or the like .

> It should be shiny clean with no deformations . Same goes for the float

> valve needle , if it's metal . If rubber tipped , it should be somewhat

> supple and conical with no deformation .

What I’m curious about is whether opening the float bowl drain screw will break the vacuum and just drain everything out of the line but not allow any additional fuel from the petcock.

Regardless it seems theres issues with either the bendix (starter pinion) or drive belt components. Cranking it over the starter isn’t spinning the wheel fast enough to get it going and just binds down. Almost has that low battery sound but does same thing when hooked up to jumper cables. I’ll take the pinion off and wire brush clean it out, regrease it and remove the belt to see if that makes a difference in speed of the starter. Gotta be something to tight to allow it to spin.

Re: 85 Honda Spree

punkrock randy /

I need to find a forum to sell my ‘86 Spree on, I’m just done with it unless i could swap on one of Hondas better engines/tranny setups. Single speed is only ok for both takeoff and top speed.

Re: 85 Honda Spree

> S C wrote:

> -------------------------------------------------------

>

> What I’m curious about is whether opening the float bowl drain screw

> will break the vacuum and just drain everything out of the line but not

> allow any additional fuel from the petcock.

>

> Regardless it seems theres issues with either the bendix (starter

> pinion) or drive belt components. Cranking it over the starter isn’t

> spinning the wheel fast enough to get it going and just binds down.

> Almost has that low battery sound but does same thing when hooked up to

> jumper cables. I’ll take the pinion off and wire brush clean it out,

> regrease it and remove the belt to see if that makes a difference in

> speed of the starter. Gotta be something to tight to allow it to spin.

The vacuum chamber is not affected by drainage of the bowl . As long as there's vacuum , either via the motor running or your mouth , fuel will flow . The valve is spring loaded and presses closed when no vacuum is present .

Your slow turn over may be caused by a dirty starter motor .

Pull it . Tear it apart and clean the internals . Lightly lube the bearings / sleeves for the armature and put it back together .

Re: 85 Honda Spree

> P D wrote:

> -------------------------------------------------------

> > S C wrote:

>

> > -------------------------------------------------------

>

> >

>

> > What I’m curious about is whether opening the float bowl drain screw

>

> > will break the vacuum and just drain everything out of the line but

> not

>

> > allow any additional fuel from the petcock.

>

> >

>

> > Regardless it seems theres issues with either the bendix (starter

>

> > pinion) or drive belt components. Cranking it over the starter isn’t

>

> > spinning the wheel fast enough to get it going and just binds down.

>

> > Almost has that low battery sound but does same thing when hooked up

> to

>

> > jumper cables. I’ll take the pinion off and wire brush clean it out,

>

> > regrease it and remove the belt to see if that makes a difference in

>

> > speed of the starter. Gotta be something to tight to allow it to spin.

>

> The vacuum chamber is not affected by drainage of the bowl . As long as

> there's vacuum , either via the motor running or your mouth , fuel will

> flow . The valve is spring loaded and presses closed when no vacuum is

> present .

>

> Your slow turn over may be caused by a dirty starter motor .

>

> Pull it . Tear it apart and clean the internals . Lightly lube the

> bearings / sleeves for the armature and put it back together .

Ah cool didn’t know that about the vacuum.

Yeah I’m going to pull the bendix, and starter to clean both and regrease. Might be rusty or something. The gear the bendix connects with is definitely rusty so this thing probably sat out in the elements for awhile.

Re: 85 Honda Spree

Post pics of your starter motor apart . Specially the brushes .

Re: 85 Honda Spree

> P D wrote:

> -------------------------------------------------------

> Post pics of your starter motor apart . Specially the brushes .

Will try, not sure if its possible to open it up or not. Pulled the bendix off during lunch and its caked with that 2 stroke oily grunge so I’ll take that apart and clean it well.

Re: 85 Honda Spree

Are you positive you have all the liquid out of the cylinder and crankcase? Will the starter turn the engine over with the spark plug and oil injector removed? Just making sure before you tear apart the starter. Good luck.

Re: 85 Honda Spree

> Kenny Shinneman wrote:

> -------------------------------------------------------

> Are you positive you have all the liquid out of the cylinder and

> crankcase? Will the starter turn the engine over with the spark plug and

> oil injector removed? Just making sure before you tear apart the

> starter. Good luck.

Good point, yeah will try that after cleaning out the bendix and gear before getting the starter out. Can also remove the belt and try starting it to isolate that and see if its an issue.

Re: 85 Honda Spree

> S C wrote:

> -------------------------------------------------------

> > P D wrote:

>

> > -------------------------------------------------------

>

> > Post pics of your starter motor apart . Specially the brushes .

>

> Will try, not sure if its possible to open it up or not.

2 screws hold the starter together .

Quit putting it off .

Tear the thing apart and be sure it's good and not a problem .

Shouldn't take all that long .

Re: 85 Honda Spree

> P D wrote:

> -------------------------------------------------------

> > S C wrote:

>

> > -------------------------------------------------------

>

> > > P D wrote:

>

> >

>

> > > -------------------------------------------------------

>

> >

>

> > > Post pics of your starter motor apart . Specially the brushes .

>

> >

>

> > Will try, not sure if its possible to open it up or not.

>

> 2 screws hold the starter together .

>

> Quit putting it off .

>

> Tear the thing apart and be sure it's good and not a problem .

>

> Shouldn't take all that long .

Took the bendix and gear off, cleaned and regreased, removed the rust from the gear. Those all look fine. Removed the starter and took it apart. Cleaned it up with a wire brush and it looks good. Put everything back together, but left the belt undone. Cranked it over and same thing, bendix connects with the gear but doesn’t turn over fast enough.

926897E2-38E0-488B-BF7E-6D6AFAFC3829.jpeg

Re: 85 Honda Spree

The starter motor internals look decent . if the field coils didn't smell burnt / toasty , it should last a long time .

Starter motors draw big amperage , so be sure all connections are bright clean and scratch tight and the battery has to be fully charged or very close to it .

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