This site uses cookies to maintain login information on FarmallCub.Com. Click the X in the banner upper right corner to close this notice. For more information on our privacy policy, visit this link: Privacy Policy
NEW REGISTERED MEMBERS: Be sure to check your SPAM/JUNK folders for the activation email.
Checking timing
Forum rules
Notice: For sale and wanted posts are not allowed in this forum. Please use our free classifieds or one of our site sponsors for your tractor and parts needs.
Notice: For sale and wanted posts are not allowed in this forum. Please use our free classifieds or one of our site sponsors for your tractor and parts needs.
- Pony Master
- 10+ Years
- Posts: 3032
- Joined: Thu Nov 15, 2007 10:39 am
- Zip Code: 62253
- Circle of Safety: Y
- Location: IL, Greenville
Checking timing
I am going to dig into the starting problem with the 54. I am going to start by checking the timing. The front pulley only has one mark in it, and I am using a mag. I will be using a timing light, so does anyone have any advice.
1947 Circle Cub, 193, 189
1954 Cub w/FH, IH100, 194, F11
1956 Cub Loboy w/FH and 194
1960 Cub Loboy w/FH and L-54
1953 Super A, 2 seater B, Avery V, Avery A, JD M, MH Pony, Leader D, Allis Chalmers C, and my Great Grandpa's ZA Minneapolis Moline.
1954 Cub w/FH, IH100, 194, F11
1956 Cub Loboy w/FH and 194
1960 Cub Loboy w/FH and L-54
1953 Super A, 2 seater B, Avery V, Avery A, JD M, MH Pony, Leader D, Allis Chalmers C, and my Great Grandpa's ZA Minneapolis Moline.
-
- 10+ Years
Re: Checking timing
Chad, if it runs fine after it starts, it is not the timing.
I bet you have an air leak at the manifold to carb gasket or the manifold itself. check it with a propane torch while it is running. Just put the nozzle of the torch in all those places(unlit) while at idle. if there is a leak, it will pick up the gas and run faster.
I bet you have an air leak at the manifold to carb gasket or the manifold itself. check it with a propane torch while it is running. Just put the nozzle of the torch in all those places(unlit) while at idle. if there is a leak, it will pick up the gas and run faster.
-
- Team Cub Mentor
- Posts: 20369
- Joined: Fri Jul 02, 2004 9:52 pm
- Zip Code: 65051
- Circle of Safety: Y
- Location: Mo. Linn
Re: Checking timing
First thing. Do a very accurate static timing.
To double check. Remove the coil wire from the distributor. Insert a spark plug into the distributor end and ground the spark plug on the engine. Put the timing light on the coil wire. Have some one crank the engine while you check the pulley timing mark to pointer position. Adjust the magneto so that the timing mark on the pulley and pointer match.
Actually, if you do an accurate static timing, you do not need to double check with the timing light. Or if you are unsure on static timing the mag you can use the timing light. Just remember that there will be 4 flashes of the timing light per 2 revolutions of the crankshaft. Only two of the flashes will match the mark on the pulley.
To double check. Remove the coil wire from the distributor. Insert a spark plug into the distributor end and ground the spark plug on the engine. Put the timing light on the coil wire. Have some one crank the engine while you check the pulley timing mark to pointer position. Adjust the magneto so that the timing mark on the pulley and pointer match.
Actually, if you do an accurate static timing, you do not need to double check with the timing light. Or if you are unsure on static timing the mag you can use the timing light. Just remember that there will be 4 flashes of the timing light per 2 revolutions of the crankshaft. Only two of the flashes will match the mark on the pulley.
I have an excuse. CRS.
-
- Team Cub Mentor
- Posts: 4127
- Joined: Tue Jan 11, 2005 12:12 pm
- Zip Code: 13830
- eBay ID: adak8965
- Circle of Safety: Y
- Location: Oxford, NY
Re: Checking timing
Here is the process for timing a mag.
1. Remove #1 spark plug (front plug on engine)
2. Place finger over spark plug hole
3. Turn engine until pointer is in line with notch on flywheel and compression is felt
4. Check mag coupler for proper alignment
5. Install magneto and move against engine block
6. Turn engine 2 revolutions until it lines up with the pointer once again.
7. Slowly rotate magneto away from engine block until a distinct click is heard
8. Tighten magneto. Engine is in time.
1. Remove #1 spark plug (front plug on engine)
2. Place finger over spark plug hole
3. Turn engine until pointer is in line with notch on flywheel and compression is felt
4. Check mag coupler for proper alignment
5. Install magneto and move against engine block
6. Turn engine 2 revolutions until it lines up with the pointer once again.
7. Slowly rotate magneto away from engine block until a distinct click is heard
8. Tighten magneto. Engine is in time.
Last edited by Cecil on Sun May 17, 2009 7:00 pm, edited 1 time in total.
- Pony Master
- 10+ Years
- Posts: 3032
- Joined: Thu Nov 15, 2007 10:39 am
- Zip Code: 62253
- Circle of Safety: Y
- Location: IL, Greenville
Re: Checking timing
Cecil, that is what I did the first time. Everything was working great. I guess I did not tighten the bolts down tight enough, and it slipped. I have not been able to get it to start right since. I have moved the mag in an attempt to get it to start, but without any luck. I was going to double check myself to be sure a I have it right on before I keep looking elsewhere. I went and bought a fancy new timing light that is powered by "D" batteries. Hopefully it will do the job nicely.
1947 Circle Cub, 193, 189
1954 Cub w/FH, IH100, 194, F11
1956 Cub Loboy w/FH and 194
1960 Cub Loboy w/FH and L-54
1953 Super A, 2 seater B, Avery V, Avery A, JD M, MH Pony, Leader D, Allis Chalmers C, and my Great Grandpa's ZA Minneapolis Moline.
1954 Cub w/FH, IH100, 194, F11
1956 Cub Loboy w/FH and 194
1960 Cub Loboy w/FH and L-54
1953 Super A, 2 seater B, Avery V, Avery A, JD M, MH Pony, Leader D, Allis Chalmers C, and my Great Grandpa's ZA Minneapolis Moline.
- Barnyard
- Team Cub
- Posts: 24265
- Joined: Tue Aug 07, 2007 3:39 pm
- Zip Code: 45030
- Tractors Owned: At This Time
40 Farmall Cubs (Round Hood)
2 Farmall Cub (Square Hood)
2 IH Cubs (Square Hood)
5 Lo-Boys (Round Hood)
2 Lo-Boys (Square Hood)
2 Farmall 404's
1 Farmall H
1 Ferguson 20
1 Cub Cadet 125
1 Kubota B-7100 - Circle of Safety: Y
- Location: OH, New Haven (Hamilton County)
- Contact:
Re: Checking timing
Chad, Could it possibly be 180 out?
There are two ways to get enough Cubs. One is to continue to accumulate more and more. The other is to desire less.
- Hengy
- 10+ Years
- Posts: 7153
- Joined: Sat Feb 18, 2006 8:12 pm
- Zip Code: 15101
- eBay ID: lacrosseorgans
- Skype Name: Mike.Hengelsberg
- Tractors Owned: 1949 Cub "Merlin"
1955 Cub "Lewis"
Cub Trailer
A-60 Blade
Cub-22 Mower
193 Plow - Circle of Safety: Y
- Location: PA, Allison Park (Am Hengelsberg)
- Contact:
Re: Checking timing
If it ran right when you first timed it and if you didn't change or remove any wires from the mag after running it the first time, then I wouldn't say that it is 180 out. However, it can't hurt to verify the timing as Cecil said. When you feel the pressure coming on the #1 plug hole and when it is right at TDC, make sure that the rotor is pointing to the #1 tower on the distributor cap. The other thing to consider is that if the mag is rotated all the way with the cap towards the engine and the mag snaps before you get to that line on the pulley, then you are off a tooth on the governor...
Mike in La Crosse, WI
Mike in La Crosse, WI
-
- 10+ Years
- Posts: 231
- Joined: Fri Mar 14, 2008 11:32 am
- Zip Code: 51557
- eBay ID: spec [77]
- Tractors Owned: 52 cub
40ish Farmall M with JD bucket - Location: Mondamin Iowa
Re: Checking timing
I hope to be doing this my self soon. When I was at WisconsinCubMan house getting my PTO installed he said that it sound like my timing was off during starting of the cub and now it is beginning to take a toll on my battery.
-
- 10+ Years
- Posts: 114
- Joined: Sun Oct 12, 2008 2:25 pm
Re: Checking timing
i saw that u got a new timing lite some of them wont work with a mag learned the hard way whem we were drag racing hope u get your problem fixed
-
- Team Cub Mentor
- Posts: 20369
- Joined: Fri Jul 02, 2004 9:52 pm
- Zip Code: 65051
- Circle of Safety: Y
- Location: Mo. Linn
Re: Checking timing
Question. Do you hear the magneto snap when cranking the engine? If not the impulse coupling has failed - this will put your spark at 16 or 17 degrees in advance of TDC during engine cranking speeds.
Poney Master stated that the Cub was running fine then the hard starting problem occurred. So, correct procedure would be to make doubly sure the ignition timing is correct then start looking for the problem in other areas.
Edit: Have you tried pull starting the Cub?
Poney Master stated that the Cub was running fine then the hard starting problem occurred. So, correct procedure would be to make doubly sure the ignition timing is correct then start looking for the problem in other areas.
Edit: Have you tried pull starting the Cub?
I have an excuse. CRS.
- Pony Master
- 10+ Years
- Posts: 3032
- Joined: Thu Nov 15, 2007 10:39 am
- Zip Code: 62253
- Circle of Safety: Y
- Location: IL, Greenville
Re: Checking timing
Yep Eugene, it pull starts just fine. If I happen to kill it, it will usually restart with the starter. It takes some cranking, but it will do it usually. I have plowed with it and not had a problem. It does not seem to lack power, it just requires a pull start.
1947 Circle Cub, 193, 189
1954 Cub w/FH, IH100, 194, F11
1956 Cub Loboy w/FH and 194
1960 Cub Loboy w/FH and L-54
1953 Super A, 2 seater B, Avery V, Avery A, JD M, MH Pony, Leader D, Allis Chalmers C, and my Great Grandpa's ZA Minneapolis Moline.
1954 Cub w/FH, IH100, 194, F11
1956 Cub Loboy w/FH and 194
1960 Cub Loboy w/FH and L-54
1953 Super A, 2 seater B, Avery V, Avery A, JD M, MH Pony, Leader D, Allis Chalmers C, and my Great Grandpa's ZA Minneapolis Moline.
- John *.?-!.* cub owner
- Cub Pro
- Posts: 23701
- Joined: Sun Feb 02, 2003 2:09 pm
- Zip Code: 63664
- Tractors Owned: 47, 48, 49 cub plus Wagner loader & other attachments. 41 Farmall H.
- Location: Mo, Potosi
Re: Checking timing
Pony Master, I have one with the same problem. What is happening to mine is that when it has run a while and the battery is real well charged and the engine is hot and limber, it cranks over so fast the impulse on the mag does not catch (6 volt system). Replacing the impulse springs ( all 3 ) helped considerably, but still hasn't completely solved the problem. I have one magneto that works good, and 2 that have problems on that tractor. they all 3 work on the other tractor which cranks more slowly.
If you are not part of the solution,
you are part of the problem!!!
you are part of the problem!!!
-
- Team Cub Mentor
- Posts: 20369
- Joined: Fri Jul 02, 2004 9:52 pm
- Zip Code: 65051
- Circle of Safety: Y
- Location: Mo. Linn
Re: Checking timing
Impulse coupling problem. Magman used to post on this board. He would be a good solution. There is also, I haven't checked in several years, a magneto repair shop in Bayard, Iowa. The guy in Bayard repairs magnetos for airplanes.Yep Eugene, it pull starts just fine. If I happen to kill it, it will usually restart with the starter. It takes some cranking, but it will do it usually. I have plowed with it and not had a problem. It does not seem to lack power, it just requires a pull start.
If you feel up to it. Try to fix the magneto yourself. I ordered a book on magneto repair. While waiting for the book to be delivered I read up on magneto theory for small engines. By the time the book arrived I had figured out how the magneto worked and repaired two magnetos for farm tractors.
I have an excuse. CRS.
- Rudi
- Cub Pro
- Posts: 28706
- Joined: Sun Feb 02, 2003 8:37 pm
- Zip Code: E1A7J3
- Skype Name: R.H. "Rudi" Saueracker, SSM
- Tractors Owned: 1947 Cub "Granny"
1948 Cub "Ellie-Mae"
1968 Cub Lo-Boy
Dad's Putt-Putt
IH 129 CC
McCormick 100 Manure Spreader
McCormick 100-H Manure Spreader
Post Hole Digger
M-H #1 Potato Digger - Circle of Safety: Y
- Twitter ID: Rudi Saueracker, SSM
- Location: NB Dieppe, Canada
- Contact:
Re: Checking timing
When I take Ellie's head off to be replaced with the yaller one from Md... would it be a good idea for me to loosen the mag and roll back to the block, then when the head comes off, watch for number 1 to piston to come up to the top of the stroke... and would that then be in time?
I had to take the governor off and it was 1 tooth off... so now it is out of time again.. and I messed it up trying to get it back..
Would this approach work?
I had to take the governor off and it was 1 tooth off... so now it is out of time again.. and I messed it up trying to get it back..
Would this approach work?
Confusion breeds Discussion which breeds Knowledge which breeds Confidence which breeds Friendship
Who is online
Users browsing this forum: No registered users and 39 guests