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Lawn Boy 8F20 C10 Iron Horse

#1

M

m33kent77

Hi everyone, I have a Lawn Boy C10 Iron Horse that I totally rebuilt. The only original parts are the cylinder sleeve and the crankcase. I have compression and a great spark. i can not get it to run and am open to any ideas. Thanks


#2

FuzzyDriver

FuzzyDriver

Great spark, but are you certain that the timing is right? Is premix getting into the cylinder? Got any pictures of it?


#3

M

m33kent77

I tried to send pictures of it, but it says file is too large. I know I have the points set right as far as gap. I do not know how to check to see if fuel is getting into cylinder.


#4

R

Rivets

Spray some carb cleaner into the spark plug hole and see if it will fire. If it fires you’re probably not getting fuel from the carb to the cylinder. Did you install new crankshaft seals? If you don’t have this manual it may help with timing. https://www.mytractorforum.com/attachments/lawn-boy-c-engine-service-pdf.922914/


#5

M

m33kent77

Rivets said:
Spray some carb cleaner into the spark plug hole and see if it will fire. If it fires you’re probably not getting fuel from the carb to the cylinder. Did you install new crankshaft seals? If you don’t have this manual it may help with timing. https://www.mytractorforum.com/attachments/lawn-boy-c-engine-service-pdf.922914/
Click to expand...
I did put new crankshaft seals in it, but I did not try spraying carb cleaner in the spark plug hole. Thanks.for.that troubleshoot. What would cause fuel not to get to the cylinder?


#6

R

Rivets

Many possibilities. Air leak in crankcase, rings not sealing cylinder, air leak between carb and block, float level too low, not getting fuel in carb.


#7

M

m33kent77

FuzzyDriver said:
Great spark, but are you certain that the timing is right? Is premix getting into the cylinder? Got any pictures of it?
Click to expand...
It is saying the photo is too large of a file.to send. The points are set to the right gap. As far as timing, I do not know. I have to wait to get some carb cleaner to put in the spark plug hole to see if I runs on that. That should tell me whether fuel is getting into the cylinder. If it is not, I guess it could be many possibilities according.to Rivets.


#8

M

m33kent77

Rivets said:
Many possibilities. Air leak in crankcase, rings not sealing cylinder, air leak between carb and block, float level too low, not getting fuel in carb.
Click to expand...
I will try to put carb cleaner in spark plug hole and see if it runs. I have heard of crankcase getting pinholes in them. I will go from there. I think the timing is right cause that is the lobe on the crankshaft that sets that, correct? I mean , when you set the points. In any case, I appreciate.your info and will keep you posted. Thank you.


#9

JDeere101

JDeere101

m33kent77 said:
It is saying the photo is too large of a file.to send. The points are set to the right gap. As far as timing, I do not know. I have to wait to get some carb cleaner to put in the spark plug hole to see if I runs on that. That should tell me whether fuel is getting into the cylinder. If it is not, I guess it could be many possibilities according.to Rivets.
Click to expand...
Put the photo in Paint and resize it down then try it.


#10

M

m33kent77

Cubby101 said:
Put the photo in Paint and resize it down then try it.
Click to expand...
If you don't mind me asking, how do you do that?


#11

JDeere101

JDeere101

Right click on the pic and it will say open with ,,,, Then scroll down and click on Paint,,, in paint it will have a option to resize photo,, open it and change the pixel size down to where ever size you want. Hopefully this will help you somewhat.


#12

FuzzyDriver

FuzzyDriver

This isn't the place to teach how to use Microsoft Paint. I tried searching with this string "how to resize an image with paint" and got lots of answers.


#13

FuzzyDriver

FuzzyDriver

Cubby101 said:
Right click on the pic and it will say open with ,,,, Then scroll down and click on Paint,,, in paint it will have a option to resize photo,, open it and change the pixel size down to where ever size you want. Hopefully this will help you somewhat.
Click to expand...
Our posts crossed, I intended this for M33Kent77, not you. Sorry if it came across the wrong way.


#14

JDeere101

JDeere101

FuzzyDriver said:
Our posts crossed, I intended this for M33Kent77, not you. Sorry if it came across the wrong way.
Click to expand...
No Problem,


#15

M

m33kent77

20210623_065602_adobespark.jpeg20210623_065602_adobespark.jpeg


#16

M

m33kent77

This is it. Powdercoated the handle and deck.Just need to figure out why it will not run. Pretty much everything is new on this one.


#17

FuzzyDriver

FuzzyDriver

Man that looks nice! How did you / Where did you get powder coating done?


#18

M

m33kent77

FuzzyDriver said:
Man that looks nice! How did you / Where did you get powder coating done?
Click to expand...
A local powdercoating place did that. I wanted to keep the shroud original.


#19

FuzzyDriver

FuzzyDriver

Was it expensive to get it done like that?


#20

M

m33kent77

FuzzyDriver said:
Was it expensive to get it done like that?
Click to expand...
I didn't think it was bad. Depends on who you go to.


#21

G

Gord Baker

m33kent77 said:
Hi everyone, I have a Lawn Boy C10 Iron Horse that I totally rebuilt. The only original parts are the cylinder sleeve and the crankcase. I have compression and a great spark. i can not get it to run and am open to any ideas. Thanks
Click to expand...
Hopefully if there are timing gears, they were installed correctly. Timing marks on each. Check coil to Flywheel clearance (a stiff business card) and that the key was put in the crank to Flywheel groove.
Try it with dry spark plug in and connected and with Starting Fluid. If it does not fire you have an electrical problem.


#22

tagpop

tagpop

m33kent77 said:
If you don't mind me asking, how do you do that?
Click to expand...
Does the carb bowl have gas in it? Take carb off and check if the bowl is half full or more or less. when you take the gas line off does fuel run out.


#23

tagpop

tagpop

Totally rebuilt, did you replace anything unter the flywheel? points? condenser? and the cam that operates the points?


#24

M

m33kent77

tagpop said:
Totally rebuilt, did you replace anything unter the flywheel? points? condenser? and the cam that operates the points?
Click to expand...
Everything was replaced and gapped. I am missing something small but can not think what it is. Unless the carb is faulty, it should run as it stands.


#25

tagpop

tagpop

Talking old school here. The appratus that the points were attached to maybe adjustable (loosen the screws and turn it to set the timing) If you removed the appratus (its a plate that the points attach to) make sure you put it back at the same adjustment as original (Check for screw/washer indentions and put it back to that position).


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