F Series Glow Plugs

[blackd]

Yes, some of the later model tractors have glow plugs. My impression is they burn out frequently. I'm in the process of replacing all three. Got them from Hoye tractor.

Also, the voltage regulator seems to burn out easily. Mine went and when I took the old one out the screws attaching it to the tractor were already well used. BTW watch the screws they are of some very soft metal.

 

[gbirky]

The voltage regulators Yanmar used seem to be a frequent replacement part. This is true of the older YMxx00 tractors as well as the YMxx01, and YMxx02's. It would seem that it is true for the F series as well.

 

[htiek126]

Perhaps your glow plug problems and current limiter problems are related? Did it happen after jump starting the tractor? Someone told me that the current limiters are not rated for more than battery voltage on the battery side, so you should not jump start the tractor from a running vehicle. I have not taken the time to review the schematics to verify, and I have my doubts. Did all of your glow plugs burn out at once? All of my tractors have had all good or all bad glow plugs. It seems like at least one of them would still be good some of the time. Perhaps it is voltage related or from over heating the engine?

 

[stnickstoys]

I haven't replaced many Yanmar glow plugs but lots of Iseki plugs. Rainbow Distributors have been a good resource for any hard to find ones.
Nick

 

[blackd]

I think mine came bad from Japan. It never did start well in the Winter. I'm pretty sure they are all bad. Regulator has been good until last summer. They should be here by Wed. so I can get this thing back together. Spring is here.

 

[bmaverick]

Perhaps your glow plug problems and current limiter problems are related? Did it happen after jump starting the tractor? Someone told me that the current limiters are not rated for more than battery voltage on the battery side, so you should not jump start the tractor from a running vehicle. I have not taken the time to review the schematics to verify, and I have my doubts. Did all of your glow plugs burn out at once? All of my tractors have had all good or all bad glow plugs. It seems like at least one of them would still be good some of the time. Perhaps it is voltage related or from over heating the engine?

Ah ha! This is the reason. Glad I search for this here. It may be an old thread, but here is the answer!

Yes, I had to jump start the tractor. Noticed when turning the key to the left, the bulb for the glow plug would NOT light up there after. Took the lamps out and 2 of the 3 were blown. Thought, ok, just the bulbs then. Well, after replacing the bulbs, the glow plugs still didn't kick in.

I did try to jump start with one of those portable packs, but it was just a wee-bit shy of having the Yanmar YM2610 turn over. Thus, I used the vehicle. Bummer folks, wish I had know this from the beginning. Pulling the battery and bench charging would have been best.

For the YM2500/YM2610, the battery location basically can take and group size battery with the posts on top. I found the RV/Marine gel cell group-31 to work really well for now.

Looking at the fuse box, each fuse looks to be in good shape and passes a volt meter continuity test.

Got to now trace the glow plug issue further. It's winter now. The next few days are in the 50s before it drops once again.

 

[winston1]

The 2610 does not have glow plugs, it has thermostart heater in the intake.

 

[bmaverick]

The 2610 does not have glow plugs, it has thermostart heater in the intake.

Oh, now it's even harder to figure this out. haha Back to square 1 to figure what is a thermostart heater.

I only assumed it had glow plugs like the others.

Why does Hoye show this for the YM2610 ???
Home/ YM2610_2610D» ELECTRIC» GLOW PLUG (THERMO-START PLUG)
GLOW PLUG (THERMO-START PLUG): Yanmar Tractor Parts

Does it have BOTH ??? I'm looking for any intake heater too.

Now, I'll have to look thru all of those scanned pages. :duck:



So, there isn't much to go by on the heater or glow plug in this ... Anyone got an idea in this image? Maybe R1 ???

 

[California]

So, there isn't much to go by on the heater or glow plug in this ... Anyone got an idea in this image? Maybe R1 ???
View attachment 634126

I don't see 'R1' in that diagram but I think the device at the center of the right edge of the diagram is the Thermostart module. It's powered from terminals 17 and 19 on the 'ignition' switch.

Also see Hoye's description of how it works.

 

[winston1]

You only have a thermostart plug. Tried to circle it with paint but wasn't smart enough to do it. Just follow the little hose down from the bottom of the little container. The thermostart screws into the top of the intake manifold. Your 2610 may not be exactly like the picture of my old 2002D but will be similar.

 

[CoyPatton]

You only have a thermostart plug. Tried to circle it with paint but wasn't smart enough to do it. Just follow the little hose down from the bottom of the little container. The thermostart screws into the top of the intake manifold. Your 2610 may not be exactly like the picture of my old 2002D but will be similar.

Winston1, I am impressed! My engine only looks that clean for a short period after I clean it. Typically prior to an oil change.

 

[CoyPatton]

Oh, now it's even harder to figure this out. haha Back to square 1 to figure what is a thermostart heater.

I only assumed it had glow plugs like the others.

Why does Hoye show this for the YM2610 ???
Home/ YM2610_2610D» ELECTRIC» GLOW PLUG (THERMO-START PLUG)
GLOW PLUG (THERMO-START PLUG): Yanmar Tractor Parts

Does it have BOTH ??? I'm looking for any intake heater too.

Now, I'll have to look thru all of those scanned pages. :duck:

View attachment 634125

So, there isn't much to go by on the heater or glow plug in this ... Anyone got an idea in this image? Maybe R1 ???
View attachment 634126

You should have little trouble locating your thermo-start on your tractor. Follow the lower line from the small fuel reservoir bottle. It on mine is plastic and a brownish color. Follow that line to your intake. The thermo-start will receive fuel and electric power.
To over simplify the process, it burns a limited amount of fuel to preheat the intake air to assist with cold starts.

 

[winston1]

Winston1, I am impressed! My engine only looks that clean for a short period after I clean it. Typically prior to an oil change.

Thanks for the compliment. My experience with the little Yanmar engines has been they are well sealed other than the diesel system. I had more trouble keeping things clean around the diesel lines than anywhere else. I'm certainly not a neat freak but don't like a big build up of crud either.

 

[YanmarFever]

Im Amazed, We never had to replace any glow plugs on any of the Yanmars we imported thru out all those years.
I still have an FX235-D and the glow plugs are hot in 2 seconds, all the F series are that way too I believe.
We replaced many Mahindra and Branson plugs, never a Yanmar

 

[bmaverick]

You only have a thermostart plug. Tried to circle it with paint but wasn't smart enough to do it. Just follow the little hose down from the bottom of the little container. The thermostart screws into the top of the intake manifold. Your 2610 may not be exactly like the picture of my old 2002D but will be similar.

When looking at the electrical schematic, I thought the 3-in-a-row were the dash lamps. Thus, turning the key full left to TS would be the R1 path.
See my circle in green for the thermostart (maybe?) and the 3-in-a-row dash lamps (maybe?). :2cents:




But it all makes sense with California's link to Hoye and you image under the white bottle with the hose. :thumbsup:

It took a bit of time, but I think it's here as 124450-77910 and/or 121023-77910 (A=E88901) ... And this mounts into the intake manifold. hmmm



It reminds me of the cigarette lighter in a vehicle, just a bit different one would guess. :dance1:

 

[bmaverick]

So, I'll need to see if fuel is getting to the thermostart device. And to check for it getting hot. If it's dead, I can order a replacement. :thumbsup:

Somewhere I have a pix with the hood open and the engine, just can not find it tonight. So, I've seen this setup approximately where the Y in the YM2610 is located inside.



PS, I should have found this posting to reply to ...

https://www.tractorbynet.com/forums/yanmar/46875-faith-t-s.html

 

[California]

Im Amazed, We never had to replace any glow plugs on any of the Yanmars we imported thru out all those years.

I'm surprised. My initial renovation on the YM240 and the first YM186D included replacing dead Thermostart units. Second YM186D hasn't needed it. (All are US version Yanmars sold here when new). Maybe rice-paddy tractors were seldom started in freezing weather?

Incidentally Thermostart modules are universal fit - I think originally a Perkins patent - and are used across several brands of tractors.

 

[winston1]

When looking at the electrical schematic, I thought the 3-in-a-row were the dash lamps. Thus, turning the key full left to TS would be the R1 path.
See my circle in green for the thermostart (maybe?) and the 3-in-a-row dash lamps (maybe?). :2cents:

View attachment 634155 View attachment 634156


But it all makes sense with California's link to Hoye and you image under the white bottle with the hose. :thumbsup:

It took a bit of time, but I think it's here as 124450-77910 and/or 121023-77910 (A=E88901) ... And this mounts into the intake manifold. hmmm

View attachment 634157

It reminds me of the cigarette lighter in a vehicle, just a bit different one would guess. :dance1:

The one you have circled with green is the oil pressure sensor. Attaching the 276 schematic, very similar to your 2610 and in English, should help you.

 

[winston1]

I'm surprised. My initial renovation on the YM240 and the first YM186D included replacing dead Thermostart units. Second YM186D hasn't needed it. (All are US version Yanmars sold here when new). Maybe rice-paddy tractors were seldom started in freezing weather?

Incidentally Thermostart modules are universal fit - I think originally a Perkins patent - and are used across several brands of tractors.

Tractor Ernie was talking about models with glow plugs, not thermostart units. At least I think so.

 

[CoyPatton]

Thanks for the compliment. My experience with the little Yanmar engines has been they are well sealed other than the diesel system. I had more trouble keeping things clean around the diesel lines than anywhere else. I'm certainly not a neat freak but don't like a big build up of crud either.

While I am far from a neat freak, I do not like an engine covered in crude. I really think that when I first got my YM2002D, the previous owner had done no more than wipe at the fill hole area (cap was clean compared the rest of the cover). The first oil change which happened as soon as I got filters order from Hoye, was done on the trailer upon return from the car wash. I now use a biodegradable degreaser on it that I have used for lots of years.