Does the Honda 3813 take a positive or negative ground?

Negative post.

The first thing to do is get a multimeter and check your battery. I assume it's 12V so you'll need a minimum of 12.6V. Then put your negative lead on battery negative and positive lead on the hot wire to the starter. If you have battery voltage when you hit the button move your negative lead to the starter ground and check again. If you have battery voltage then your starter is bad. The maximum voltage loss acceptable is .5V from battery voltage. If you don't have battery voltage after the first test possible fuse wire or switch, if not after the second test bad ground.

yes red to battery negative

hi

Car Radio Battery Constant 12v+ Wire: White/Yellow
Car Radio Accessory Switched 12v+ Wire: Yellow/Red
Car Radio Ground Wire: Black
Car Radio Illumination Wire: Red/Black
Car Stereo Antenna Trigger Wire: Yellow/White
Left Front Speaker Positive Wire (+): Blue/Green
Left Front Speaker Negative Wire (-): Gray/Black
Right Front Speaker Positive Wire (+): Red/Green
Right Front Speaker Negative Wire (-): Brown/Black
Left Rear Speaker Positive Wire (+): Blue/Yellow
Left Rear Speaker Negative Wire (-): Gray/White
Right Rear Speaker Positive Wire (+): Red/Yellow
Right Rear Speaker Negative Wire (-): Brown/White

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1996 Honda Accord Car Stereo Wiring Diagram
Car Radio Battery Constant 12v+ Wire: Yellow/White
Car Radio Accessory Switched 12v+ Wire: White/Red
Car Radio Ground Wire: Black
Car Radio Illumination Wire: Red/Black
Car Stereo Dimmer Wire: N/A
Car Stereo Antenna Trigger Wire: Yellow/White
Car Stereo Amp Trigger Wire: N/A
Car Stereo Amplifier Location: N/A
Car Audio Front Speakers Size: 5 1/4′
Car Audio Front Speakers Location: Doors
Left Front Speaker Positive Wire (+): Blue/Green
Left Front Speaker Negative Wire (-): Gray/Black
Right Front Speaker Positive Wire (+): Red/Green
Right Front Speaker Negative Wire (-): Brown/Black
Car Audio Rear Speakers Size: 6 1/2′
Car Audio Rear Speakers Location: Rear Deck
Left Rear Speaker Positive Wire (+): Blue/Yellow
Left Rear Speaker Negative Wire (-): Gray/White
Right Rear Speaker Positive Wire (+): Red/Yellow
Right Rear Speaker Negative Wire (-): Brown/White

I had a similar problem with my Honda 3813. When I tore it down, I found that the 3813 has a slow delay cyclinder - something like a shock absorber - the slowly puts pressure on the clutch plate after you let up on the clutch pedal. In my case, the clutch is old and worn, this is exactly the symptom I experienced because the clutch was nearly worn out - it took like 10 or more seconds to get going. A new drive clutch and a little adjustment fixed this problem for me. To replace the clutch without removing the engine I had to cut the cross brace plate on the bottom of the tractor.

To get to this you need to remove all the tin that is under the seat part of the tractor - a real nuisance.

Also, it took me 3 months to get the clutch from the Honda dealer. .... definitely not helpful! Good thing I had a John Deere as a backup, I've never had trouble getting parts quickly for that.