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Cox Engine of The Month
August-2024
balogh's
![](https://i.servimg.com/u/f95/15/46/86/41/1_balo14.jpg)
"Cox TD09 R/C Beast of Burden featuring Kamtechnik head and DIY metallic fuel nipple"
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PAST WINNERS
balogh's
![](https://i.servimg.com/u/f95/15/46/86/41/1_balo14.jpg)
"Cox TD09 R/C Beast of Burden featuring Kamtechnik head and DIY metallic fuel nipple"
![](https://i.servimg.com/u/f95/15/46/86/41/sponso12.png)
PAST WINNERS
Preventive maintainance
Page 1 of 1
Preventive maintainance
I have a few Cox reed engines that I purchased.
One looks to be in very good shape.
The other is fairly gummed up and looks like the intake screen has been removed.
The last, looks like it has never been run.
I need suggestions as to how far I should take clean up, or tear down, before attempting to run them.
Asking because I have never taken one of these apart.
Thanks for any suggestions.
Scratch...
One looks to be in very good shape.
The other is fairly gummed up and looks like the intake screen has been removed.
The last, looks like it has never been run.
I need suggestions as to how far I should take clean up, or tear down, before attempting to run them.
Asking because I have never taken one of these apart.
Thanks for any suggestions.
Scratch...
Scratch049- Bronze Member
- Posts : 55
Join date : 2018-08-17
Age : 86
Location : South Carolina
Re: Preventive maintainance
Probably a good idea to take them apart, but if they'll turn over easy, you MIGHT consider bolting them to a stand to see if they'll run as-is. You may have some "runners" right out of the gate.
Kim- Top Poster
Posts : 8602
Join date : 2011-09-06
Location : South East Missouri
Re: Preventive maintainance
I would suggest you do what Kim said and just see what ones need to be torn down.
I will add that these engines are very easy to tear down and put together. If you are willing just about everyone here can help you along as you go through them.
Ron
I will add that these engines are very easy to tear down and put together. If you are willing just about everyone here can help you along as you go through them.
Ron
Cribbs74- Moderator
Posts : 11906
Join date : 2011-10-24
Age : 50
Location : Tuttle, OK
Re: Preventive maintainance
+1 to what Kim said.
Also read this if you are totally unfamiliar with Cox engines: https://coxengines.ca/files/CMG.pdf
Get back to us if you have any problems or questions. There are many experienced members here willing to help.
Also read this if you are totally unfamiliar with Cox engines: https://coxengines.ca/files/CMG.pdf
Get back to us if you have any problems or questions. There are many experienced members here willing to help.
Marleysky- Top Poster
Posts : 3618
Join date : 2014-09-28
Age : 71
Location : Grand Rapids, MI
Re: Preventive maintainance
Clean large work area*....NOT over carpet!
set of correct tools....cox wrenches, small flat blade screw driver and the mandatory Pliers**
Piston reset tool
one or more Brass, stainless, or nylon small tooth brushes
91% wally world pharma alcohol
Q tips
Air tool Oil
Permatex anaerobic gasket maker
Fresh gaskets, reeds
* I work over a 2' x 3' table top with a WHITE towel so I can see all the dinky parts and they don't jump onto the floor
**The Pliers are to be hooked to a 100,000 KVA electric fence charger so every time you touch them you learn a valuable lesson
set of correct tools....cox wrenches, small flat blade screw driver and the mandatory Pliers**
Piston reset tool
one or more Brass, stainless, or nylon small tooth brushes
91% wally world pharma alcohol
Q tips
Air tool Oil
Permatex anaerobic gasket maker
Fresh gaskets, reeds
* I work over a 2' x 3' table top with a WHITE towel so I can see all the dinky parts and they don't jump onto the floor
**The Pliers are to be hooked to a 100,000 KVA electric fence charger so every time you touch them you learn a valuable lesson
fredvon4- Top Poster
Posts : 4007
Join date : 2011-08-26
Age : 69
Location : Lampasas Texas
Re: Preventive maintainance
Really appreciate the great response,Gentlemen.
The link from Marleysky is especially helpful.
I was able use it to download additional info.
Have everything FredVon mentioned or its on the way from Cox Int'l. including one gasket kit and one rebuild kit. May have to order again.
That's one thing that does frost me.
I examine any engine that I buy for those sort of tool marks.
Firm believer in the right tool for the right job.
Good tips on the work area.
Many thanks.
Scratch...
The link from Marleysky is especially helpful.
I was able use it to download additional info.
Have everything FredVon mentioned or its on the way from Cox Int'l. including one gasket kit and one rebuild kit. May have to order again.
How 'bout I just put them where I can't find them.
**The Pliers are to be hooked to a 100,000 KVA electric fence charger so every time you touch them you learn a valuable lesson
![Very Happy](https://2img.net/i/fa/i/smiles/icon_biggrin.png)
That's one thing that does frost me.
![Mad](https://2img.net/i/fa/i/smiles/icon_mad.gif)
I examine any engine that I buy for those sort of tool marks.
Firm believer in the right tool for the right job.
Good tips on the work area.
Many thanks.
Scratch...
Scratch049- Bronze Member
- Posts : 55
Join date : 2018-08-17
Age : 86
Location : South Carolina
Re: Preventive maintainance
Because manufacturers want you to buy their products they quite often exaggerate the abilities and outcomes of their products and no more so than in the realm of tools, powered or manual. Below is a carefully constructed description of the most common of such tools and the results that most will experience sometime during their use. Pliers are fourth on the list
![Preventive maintainance Tool_g10](https://i.servimg.com/u/f83/18/63/44/48/tool_g10.jpg)
![Preventive maintainance Tool_g10](https://i.servimg.com/u/f83/18/63/44/48/tool_g10.jpg)
Davenz13- Platinum Member
- Posts : 596
Join date : 2013-11-28
Age : 68
Location : Palmerston North, New Zealand
Re: Preventive maintainance
While I understand Fred's reluctance to NOT work over carpet, I do want to say I prefer to.
That is, I prefer to sit on the floor on short light colored berber anytime I do carb work (or detailed "tiny, springy piece" work). Preferably in "fitted" shorts with very few places for springs, things and screws to hide in!
The springy pieces usually show up shiny against the light (think khaki or tan) carpet. Small screws can't bounce under the work bench, nor roll away. Ball bearings also lose their affinity for skittering away.
A month ago I broke my "rule" while working on a buddy's dirt bike. And promply lost the carb float needle AND it's separated retaining clip. I spent the better part of two hours looking to no avail. Fortunately the repair kit came with the two parts a few days later.
A week later something shiny caught my eye. It was the little retaining clip 4 feet from where it fell. The following week I pulled the float needle from a flip-flop!
And no, shag carpet won't help...gotta be berber (or a bath/beach towel) under my legs.
That is, I prefer to sit on the floor on short light colored berber anytime I do carb work (or detailed "tiny, springy piece" work). Preferably in "fitted" shorts with very few places for springs, things and screws to hide in!
The springy pieces usually show up shiny against the light (think khaki or tan) carpet. Small screws can't bounce under the work bench, nor roll away. Ball bearings also lose their affinity for skittering away.
A month ago I broke my "rule" while working on a buddy's dirt bike. And promply lost the carb float needle AND it's separated retaining clip. I spent the better part of two hours looking to no avail. Fortunately the repair kit came with the two parts a few days later.
A week later something shiny caught my eye. It was the little retaining clip 4 feet from where it fell. The following week I pulled the float needle from a flip-flop!
And no, shag carpet won't help...gotta be berber (or a bath/beach towel) under my legs.
944_Jim- Diamond Member
Posts : 2014
Join date : 2017-02-08
Age : 59
Location : NE MS
Re: Preventive maintainance
A flashlight is handy too. If you drop a part, hold the flashlight low on the floor. The part will flash and cast a shadow making it easier to see.
I work over a bar towel on my bench, low and well inside the edge, a foot or more. Dropped pieces falling a couple inches don't tend to go very far when hitting a a soft towel, unless they are spring-driven. In that case, you're on your own. A magnetic parts dish is a part of my disassembly kit too, set in the middle of the bench. A couple of good sets of tweezers are a necessity.
Davenz13, you've obviously been in my shop when I've been in a hurry. Thanks for the chuckle.
I work over a bar towel on my bench, low and well inside the edge, a foot or more. Dropped pieces falling a couple inches don't tend to go very far when hitting a a soft towel, unless they are spring-driven. In that case, you're on your own. A magnetic parts dish is a part of my disassembly kit too, set in the middle of the bench. A couple of good sets of tweezers are a necessity.
Davenz13, you've obviously been in my shop when I've been in a hurry. Thanks for the chuckle.
Dave P.- Gold Member
- Posts : 477
Join date : 2017-07-31
Age : 67
Location : Durham, NC
Re: Preventive maintainance
Oops. Double post.
Dave P.- Gold Member
- Posts : 477
Join date : 2017-07-31
Age : 67
Location : Durham, NC
Re: Preventive maintainance
A large transparent plastic bag to do the dismantling and assembly of springy components inside may prevent loss of the tiny parts..
balogh- Top Poster
Posts : 4852
Join date : 2011-11-06
Age : 65
Location : Budapest Hungary
Re: Preventive maintainance
Scratch049 wrote:The other is fairly gummed up and looks like the intake screen has been removed.
The engine will run fine without the FOD screen. (FOD is a military term meaning "Foreign Object Damage", i.e. dirt particles possibly ingested during a crash.) Many engines including the Cox Medallions, OK Cubs, Wen Mac, Testors, most larger engines don't have this screen over venturi / carburetor opening.
GallopingGhostler- Top Poster
Posts : 5513
Join date : 2013-07-13
Age : 70
Location : Clovis NM or NFL KC Chiefs
Re: Preventive maintainance
Thank you very much for your input,gentlemen.
I do have what may be a very ideal work station for small engines.
Used to do duty (oops!) as a baby work station.
Found it at a re-purpose store for forty five bucks.
Had a broken castor that was easily fixed.
The bin that once may have been a bath unit,will not allow small parts to escape.
A white pad would of coarse help with eye-balling small parts.
![Preventive maintainance Img_0419](https://i.servimg.com/u/f58/19/95/81/20/img_0419.jpg)
I do have what may be a very ideal work station for small engines.
Used to do duty (oops!) as a baby work station.
Found it at a re-purpose store for forty five bucks.
Had a broken castor that was easily fixed.
The bin that once may have been a bath unit,will not allow small parts to escape.
A white pad would of coarse help with eye-balling small parts.
![Preventive maintainance Img_0419](https://i.servimg.com/u/f58/19/95/81/20/img_0419.jpg)
Scratch049- Bronze Member
- Posts : 55
Join date : 2018-08-17
Age : 86
Location : South Carolina
Re: Preventive maintainance
That really is the perfect setup, Scratch. Might have to get one of those myself. Cloth diapers make great engine maintenance pads, if there are any left in the drawers!
Dave P.- Gold Member
- Posts : 477
Join date : 2017-07-31
Age : 67
Location : Durham, NC
Re: Preventive maintainance
I actually had to mail order real cloth diapers recently...NONE locally of sale in three local towns
I think that changing station is a near perfect small engine repair platform....
I think that changing station is a near perfect small engine repair platform....
fredvon4- Top Poster
Posts : 4007
Join date : 2011-08-26
Age : 69
Location : Lampasas Texas
Re: Preventive maintainance
Thanks guys.
Thanks for that.
Reminded me that I had a bunch put away.
I hear you Fred.
Nothing but the plastic ones in the Stores.
Thanks for that.
Reminded me that I had a bunch put away.
![Very Happy](https://2img.net/i/fa/i/smiles/icon_biggrin.png)
I hear you Fred.
Nothing but the plastic ones in the Stores.
Last edited by Scratch049 on Sun Sep 02, 2018 3:29 pm; edited 1 time in total (Reason for editing : cuz i kant spel)
Scratch049- Bronze Member
- Posts : 55
Join date : 2018-08-17
Age : 86
Location : South Carolina
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