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post #1 of 26 Old 06-19-2019, 02:36 PM Thread Starter
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8220 automower project

This came home with me yesterday in pieces but everything is there. PO had plans to restore but lost interest and I was able to pick it up for a very good price. Iím going to pick up where he left off. Itís actually good that itís already disassembled as now I donít have to do it. Iím going to start with rebuilding the motor then move to the body. I think this may be the first mower I will consider getting powder coated.
The jug is extremely clean but the piston is scored very badly on the one end. Considering I donít have any NOS C series pistons, Iím wondering if I could swap in a new d series piston and rod assembly as I have 2 or 3 NOS of these assemblies on my parts shelf. Can someone confirm if this is easily doable as I havenít attempted one of these conversions before.
Hereís some pics of the mower as I started unpacking it

Iím pretty excited about this one, as I really enjoy taking on projects of low production (more rare) models. Although I guess most two stroke LBís are becoming more rare nowadays.

Geoff


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1952 LB 8T10, 1954 LB 8T14, 1955 LB 8F20K, 1956 LB 7000, 1957 LB 3100, 1957 LB 8S11LB, 1957 LB 5100, 1957 Marauder 89MH, 1958 LB 5150, 1959 LB 5250 Quietflite, 1959 LB 3050, 1962 LB 5230, 1962 LB 7251, 1962 LB 5260, 1963 LB 7213, 1967 LB 3054, 1967 LB 5265, 1977 LB 7227, 1977 LB 6277 Commercial, 1981 LB 5024, 1998 LB 10548
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post #2 of 26 Old 06-19-2019, 02:56 PM
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Re: 8220 automower project

Looks like a great project! Looking forward to following the progress on that one. Looks like it is good shape as is?
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post #3 of 26 Old 06-19-2019, 03:15 PM Thread Starter
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Re: 8220 automower project

In my opinion I wouldnít have even torn it down. It is in really good condition. I would have just used as is but considering itís now broken down I may as well go full out. Though on the other side I could just clean up and reassemble and then use it from time to time. If I restore it, it will end up on my shelf and Iíll never use it
Now youíve got me on the fence. What to do....


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1952 LB 8T10, 1954 LB 8T14, 1955 LB 8F20K, 1956 LB 7000, 1957 LB 3100, 1957 LB 8S11LB, 1957 LB 5100, 1957 Marauder 89MH, 1958 LB 5150, 1959 LB 5250 Quietflite, 1959 LB 3050, 1962 LB 5230, 1962 LB 7251, 1962 LB 5260, 1963 LB 7213, 1967 LB 3054, 1967 LB 5265, 1977 LB 7227, 1977 LB 6277 Commercial, 1981 LB 5024, 1998 LB 10548
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post #4 of 26 Old 06-19-2019, 03:42 PM
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Re: 8220 automower project

Oh, very nice score

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1953 8FH11LB
1960 ET-1 edger
1963 8221
1964 3052 x2
1967 3002
1968 5236
1969 5238
1971 5020
8235AE
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post #5 of 26 Old 06-19-2019, 03:47 PM
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Re: 8220 automower project

Don't ya love it when they follow you home like a lost puppy! I vote for a "rat rod" restore, they ain't pretty but they work great!

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post #6 of 26 Old 06-19-2019, 05:38 PM
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Re: 8220 automower project

Second the "rat rod." Fix it, use it. Don't put it on a shelf. Always time for that later down the road...
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post #7 of 26 Old 06-19-2019, 05:49 PM
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Re: 8220 automower project

Wow,that's quite some boxes of parts! As long as it's in pieces,I would restore it,but that's just me.Looking forward to see what you're going to do.Nice project!
You could still use it on occasion after restore...I would.

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post #8 of 26 Old 06-19-2019, 06:44 PM
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Re: 8220 automower project

Who were you going to get to Powder Coat it?
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post #9 of 26 Old 06-19-2019, 08:11 PM Thread Starter
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Re: 8220 automower project

Powder coating at Westex coatings in Waterloo. Iíve done some snowmobile parts there and was very happy with the quality and price.

I may try to salvage the current piston. Iíd like to keep it original if possible and not change to a 2 ring. Iíve got several other mowers that I use that are 16:1 so itís no big deal mixing special fuel. If I canít salvage the piston Iíll take one from a donor motor Iíve got kicking around
Still on the fence on a repaint. Will think about it. Gonna get started on engine in the next couple of days.


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1952 LB 8T10, 1954 LB 8T14, 1955 LB 8F20K, 1956 LB 7000, 1957 LB 3100, 1957 LB 8S11LB, 1957 LB 5100, 1957 Marauder 89MH, 1958 LB 5150, 1959 LB 5250 Quietflite, 1959 LB 3050, 1962 LB 5230, 1962 LB 7251, 1962 LB 5260, 1963 LB 7213, 1967 LB 3054, 1967 LB 5265, 1977 LB 7227, 1977 LB 6277 Commercial, 1981 LB 5024, 1998 LB 10548
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post #10 of 26 Old 06-19-2019, 09:19 PM
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Re: 8220 automower project

We use them at work. They do a decent job and they are priced well. I use a guy on Hackbart Rd between Wellesley and St. Clements. Heís not bad but he has a limited colours.
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post #11 of 26 Old 06-20-2019, 12:40 PM Thread Starter
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Re: 8220 automower project

Not looking too promising

Thoughts?

What I donít get is the jug is almost perfect. Just some extremely light scuffing. Canít even really pick at it with my finger nail


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1952 LB 8T10, 1954 LB 8T14, 1955 LB 8F20K, 1956 LB 7000, 1957 LB 3100, 1957 LB 8S11LB, 1957 LB 5100, 1957 Marauder 89MH, 1958 LB 5150, 1959 LB 5250 Quietflite, 1959 LB 3050, 1962 LB 5230, 1962 LB 7251, 1962 LB 5260, 1963 LB 7213, 1967 LB 3054, 1967 LB 5265, 1977 LB 7227, 1977 LB 6277 Commercial, 1981 LB 5024, 1998 LB 10548
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post #12 of 26 Old 06-20-2019, 08:42 PM
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Re: 8220 automower project

hello Geoff
Scott here you can use a two ring piston as i said used a two ring piston in my 8220 it will
work well hope you see this post about your 8220 your lawn-boy friend Scott
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post #13 of 26 Old 06-21-2019, 12:07 AM
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Re: 8220 automower project

Geoff,
2 ring piston will work only if using later con rod. piston has larger bore wrist pin hole and rod has needle bearings on wrist pin. You could likely use 32 to 1 mis with later 2 ring piston and rod. For 32 to 1 mix you should have needle bearings on crank and wrist pin, single bushing on lower end of crankcase, 2 ring piston and needle bearings on magneto plate. You won't have needle bearings on magneto but if you are not running it for long periods of time and not working it to hard, I think you will be ok. I would go 16 to 1 to be safe though.
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post #14 of 26 Old 06-21-2019, 01:39 AM
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Re: 8220 automower project

hello there Geoff'
to share again another lawn-boy mower i use a two ring piston in is a 1964 7253 had rebuilt it many years ago
has bronze bushing mag plate and use 32 to 1 mix runs well with no trouble at mowed a lot of lawns with it also
Bill have same two ring piston assembly in a 1968 3002 and also runs well also as you read my post having my 8220
using a two ring piston as well your lawn-boy friend Scott
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post #15 of 26 Old 06-21-2019, 08:08 AM Thread Starter
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Re: 8220 automower project

Thanks guys
Iíve installed the d series piston and rod along with needle bearings on the rod. I did however forget to put grease on the inner rod cap. Will this be a big deal or do I have to take it back apart?
Can someone direct me to the part of the manual where it talks about measuring ring gap? For some reason I canít find the page where it talks about it. Iím assuming I have to do this when installing the new rings

Iíve been doing some cleaning throughout this process. Itís cleaning up pretty good



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1952 LB 8T10, 1954 LB 8T14, 1955 LB 8F20K, 1956 LB 7000, 1957 LB 3100, 1957 LB 8S11LB, 1957 LB 5100, 1957 Marauder 89MH, 1958 LB 5150, 1959 LB 5250 Quietflite, 1959 LB 3050, 1962 LB 5230, 1962 LB 7251, 1962 LB 5260, 1963 LB 7213, 1967 LB 3054, 1967 LB 5265, 1977 LB 7227, 1977 LB 6277 Commercial, 1981 LB 5024, 1998 LB 10548
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