GravelyL1 tractor walk behind - MyTractorForum.com - The Friendliest Tractor Forum and Best Place for Tractor Information
 
LinkBack Thread Tools Display Modes
post #1 of 4 Old 09-08-2019, 09:04 PM Thread Starter
MTF Junior Poster
 
Join Date: Sep 2019
Posts: 1
GravelyL1 tractor walk behind

Looking for help I gave a gravely walk behind. Shut down after 30 min of running wait 10 min start back up. Replaced point condenser plug wire spark plug. Noticed inside of muffler get cherry red any ideals on what wrong.
Nealg83059 is offline  
Sponsored Links
Advertisement
 
post #2 of 4 Old 09-08-2019, 11:13 PM
2000 Posts and climbing!!!
 
Gerrard's Avatar
 
Join Date: May 2016
Location: West Virginia
Posts: 2,651
Re: GravelyL1 tractor walk behind

Dont think I can kno.
Gerrard is online now  
post #3 of 4 Old 09-09-2019, 06:18 AM
jrd
3K Poster!!!!
 
Join Date: Jun 2008
Location: Ma
Posts: 4,035
Re: GravelyL1 tractor walk behind

Hi Neal.

I'm trying to figure out what issue you're contending with. Is the problem that after running and shutdown, you can't get it running again for 10 minutes? Or is your concern when running, the muffler gets really hot?

Others on here have talked about the mufflers getting hot. I'm not sure there's a single cause. I'd say make sure your timing is right, valves are set correctly, and check the mixture.

If you're having other ignition problems, please say more about what the problem is.

'41 L (not running)
'43 L
'44 L
'50 L
'52 L (not running)
'58 LI (not running)
'59 LI
'61 LS
'61 LS
Mutt LS
'62 LI (not running)
'63 L8
'66 L8
'66 C8
'67 C8
'74 Comm 12
'75 C8
'73 812
'74 816
UFT Mountaineer 88E
3 parts/project tractors
Too many attachments
jrd is online now  
Sponsored Links
Advertisement
 
post #4 of 4 Old 09-09-2019, 04:06 PM
3K Poster!!!!

 
Join Date: Jan 2011
Location: Ohio/Ashtabula
Posts: 3,025
Re: GravelyL1 tractor walk behind

I do believe you have a magneto timing problem.

Hopefully, you have a Wico magneto and can hear the impulse arm 'snap' while hand cranking. And hopefully no previous owner has messed with the lag-angle setting on your magneto.

Remove the spark plug and reconnect the plug wire, ground the metal part of the spark plug, or just ground the plug wire while making the following adjustment.

If the nut on the magneto adjusting block is visible, you are on the compression stroke, nut down is the exhaust stroke. The magneto turns at one half engine speed, spark every second time the piston comes up.

Now you need to find the high point of piston travel on compression, TDC. Place a long thin wooden dowel down in the spark plug hole and follow the piston travel. Mark the high point of travel, TDC.

Now while you hand crank, don't even look at the back of the magneto, listen for the snap. The snap should occur at TDC, or TDC plus a tich. Adjust the block until you get the snap at TDC + a tich. While hand cranking you want the spark to occur just before the piston starts heading back down after compression.

Spark before TDC can cause backfires and starter straps being ripped out of hands.

Spark well past TDC may be your problem, ignition with the exhaust starting to open.

Roger,

Faux Pas are my forte
beaner2u is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the MyTractorForum.com - The Friendliest Tractor Forum and Best Place for Tractor Information forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome