Need help?


Search OutdoorKing-Forum by entering Key Words Below



Who's Online Now
0 members (), 1,339 guests, and 1,245 robots.
Key: Admin, Global Mod, Mod
Newest Topics
Where to get wheel bearing seals?
by vint_mow - 18/04/26 07:34 AM
Briggs, Honda, Robin Generic Spare Parts
by Bruce - 07/04/26 03:39 PM
Atom Spare Parts For Sale
by Bruce - 07/04/26 03:24 PM
Ryobi Spare Parts
by Bruce - 07/04/26 12:00 PM
Imperial clutch and sprocket removal
by Darth Imperial - 04/04/26 07:12 PM
Parts site unable to send contact
by James Maunder - 24/03/26 01:59 PM
Engine rebuild - Crankshaft float
by Bumps - 19/03/26 10:57 AM
Topic Replies
Where to get wheel bearing seals?
by vint_mow - 18/04/26 07:34 AM
Briggs, Honda, Robin Generic Spare Parts
by Bruce - 07/04/26 03:39 PM
Atom Spare Parts For Sale
by Bruce - 07/04/26 03:24 PM
Ryobi Spare Parts
by Bruce - 07/04/26 12:00 PM
Royal Enfield Mower
by mice_elf - 06/04/26 07:09 PM
Imperial clutch and sprocket removal
by Bruce - 05/04/26 03:47 PM
Engine rebuild - Crankshaft float
by Bumps - 01/04/26 04:37 PM
Mower wheel ID.
by maxwestern - 28/03/26 10:35 AM
Eaton Model 6/7
by mm-mowers - 26/03/26 09:58 AM
Parts site unable to send contact
by James Maunder - 25/03/26 08:43 AM
Previous Thread
Next Thread
Print Thread
Rate Thread
Hop To
Joined: May 2009
Posts: 3
Novice
Hi everyone,

New here. I have this Atco that will only fire if I prime it with gas in the plug hole and it only runs for 5 seconds or so to burn that off. It doesn't seem to pull fuel into the head. I took the head off and the valves and valve seats are pitted. There was alot of carbon buildup there and I wire brushed it off. It went from no compression to a little compression after that. The carb is clean with all ports open. Since it does fire when primed am I looking at an intake valve seating issue here? There's slots on the top of the valves. I suppose this is for grinding them. Suggestions? Also, what size is the nut on the flywheel to spin this with a drill to start it? My 19mm is just a hair too big so it must be 18mm. Strange that I only have the odd numbered sized mm sockets. I bought this off of Craigslist Nashville TN for $40 this spring. The guy was a professor at Vanderbilt University and brought it with him from London several years earlier when he moved here and just had it stored in his garage. Lucky for me I suppose. I see there's not many of these here in the states.

Out of questions for now.
Kevin

[Linked Image from i173.photobucket.com]



Last edited by Bruce; 02/05/09 01:26 AM. Reason: corrected image links
Joined: Dec 1999
Posts: 5,419
Likes: 36
Repair Junkie
****
Being an English machine you will need imperial spanners.

As to the fuel problem it would need the valves to be ground and then lapped back in but you will have to check the valve clearance once you have done the grind and lapping.

I would also be checking the cylinder as it could be glazed causing the compression issue as well the rings could be worn or seized up in the piston.

Hope this is of some help to you. cheers2


Regards,
[Linked Image]

Bruce


Please do not PM me asking for support. Post on the forums as it helps all members not just the individual.
Joined: Jul 2005
Posts: 6,362
Likes: 11
Administrator - Master Technician
****
Hi Kevin, and a big warm welcome to the forum. yay
That is a great project you have there, easy to restore to it's former glory if you wish to go that way; and I do agree that it would be very rare machine in the US.
Best of luck sorting it's fuel prob.....
It's good to have you on board. wink
cheers2


Please do not PM me asking for support. Please post your questions in the appropriate forums, as the replies it may receive may help all members, not just the individual member.
Kindest Regards, Darryl grin


Joined: May 2009
Posts: 3
Novice
Update! Got it running pretty good. The screen that wraps the fuel jet/port still had fine crud in it and clogged it up. Soon to be on Ebay to make room for a big old Gravely 8162B.
Thanks from Tennesse.


Moderated by  bigted, Bruce, CyberJack, Gadge, Mr Davis 

Link Copied to Clipboard
Newest Members
mowersam, Ess, Greg1402, archernar, The Grasscutter
17,925 Registered Users
Forum Statistics
Forums145
Topics13,081
Posts107,357
Members17,925
Most Online40,124
Apr 13th, 2026
OutdoorKing Showcase
20 Bucks from FB Marketplace
20 Bucks from FB Marketplace
by Return Rider, February 20
Victa Cortina 2 Shed Find
Victa Cortina 2 Shed Find
by Return Rider, January 25
My Rover Baron 45
My Rover Baron 45
by Maxwell_Rover_Baron, April 16
SHOWCASE - Precision Mowers - 2021
SHOWCASE - Precision Mowers - 2021
by CyberJack, April 14
SHOWCASE – Atco Rotary – Paul C - 2020
SHOWCASE – Atco Rotary – Paul C - 2020
by CyberJack, December 28
HOME |CONTACT US
Powered by UBB.threads™ PHP Forum Software 8.0.0
(Release build 20240826)
Responsive Width:

PHP: 8.3.30 Page Time: 0.031s Queries: 23 (0.026s) Memory: 0.6344 MB (Peak: 0.6598 MB) Data Comp: Zlib Server Time: 2026-04-18 14:05:47 UTC
Valid HTML 5 and Valid CSS