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Discussion Starter #1
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. I’m going to pick up where he left off. It’s actually good that it’s already disassembled as now I don’t have to do it. I’m 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 don’t have any NOS C series pistons, I’m 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 haven’t attempted one of these conversions before.
Here’s some pics of the mower as I started unpacking it

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

Geoff


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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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Discussion Starter #3
In my opinion I wouldn’t have even torn it down. It is in really good condition. I would have just used as is but considering it’s 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 I’ll never use it
Now you’ve got me on the fence. What to do....


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Oh, very nice score

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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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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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Discussion Starter #9
Powder coating at Westex coatings in Waterloo. I’ve done some snowmobile parts there and was very happy with the quality and price.

I may try to salvage the current piston. I’d like to keep it original if possible and not change to a 2 ring. I’ve got several other mowers that I use that are 16:1 so it’s no big deal mixing special fuel. If I can’t salvage the piston I’ll take one from a donor motor I’ve 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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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. He’s not bad but he has a limited colours.
 

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Discussion Starter #11
Not looking too promising

Thoughts?

What I don’t get is the jug is almost perfect. Just some extremely light scuffing. Can’t even really pick at it with my finger nail


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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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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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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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Discussion Starter #15
Thanks guys
I’ve 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 can’t find the page where it talks about it. I’m assuming I have to do this when installing the new rings

I’ve been doing some cleaning throughout this process. It’s cleaning up pretty good



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Discussion Starter #17
can someone confirm if I am using the right part numbers for the connecting rod and piston.
Piston part# 606607
Connecting rod# 611451
This all came as an assembled kit i have #682864 (including the needle bearings)
I don't want to get this thing put all back together with the wrong parts.

Thanks
 

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Discussion Starter #18
Thanks RfWi
I remembered that post too, but couldn't find it. Thanks for posting
 

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Geoff,
I have a new in box 682865 Rod and bearing & sleeve assy. and casting number is 611541 with D2. Original part number for piston this assembly was 679156 and subs to 682865. Difference in numbers is the 682865 has new style rod with Philips head rod bolts and does not use rod bolt locking tabs as original. You rod is correct and latest design. Similar part number changes apply to piston and rod assembly 679155 to 682864.
 

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Discussion Starter #20
Thanks for clarifying Bill I feel a better now. Interesting though that my rod bolts are allen heads and not philips. it must be correct though as the box it came out of was all factory sealed.
I wish they still sold the 682864 as i'd be inclined to buy a few of them to keep on my shelf. After this one I've only got 1 NOS kit left.
 
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