tecumseh electrical question


Old 04-11-05, 10:06 AM
Visiting Guest
Posts: n/a
tecumseh electrical question


I have an old Wheel Horse riding mower that had the engine replaced by the previous owner. The new engine is a Tecumseh TVXL220 157234D.

The electric start was never hooked up. I've purchase a battery and hooked up the starter through the original starter switch. The electric start works good however, I'm not sure how to hook up the alternator.

I've checked with the local lawnmower shop, and they tell me that the output is DC because of a diode in the wiring, but were not sure how to hook up.

There are two wires coming off the alternator, a red and green. I measure about 12.5 volts between the two wires. Red being positive and green negative. When I attach the red to the positive, nothing special happens, but when I hook the green to the negative, the engine shuts off.

What do I do?

Will the battery get charged by just the one wire? (ie is the negative side of the alternator attached to the chasis ground?).

Also, how do i check to see if the battery is being charged? In a car, one can usually tell because the voltage on the battery jumps up to the mid 13 volt range.

Sponsored Links
Old 04-12-05, 01:03 AM
cheese's Avatar
Forum Topic Moderator
Join Date: Jul 2001
Location: USA
Posts: 16,822
If the diode is already present, then connect the red wire to a position on the keyswitch that has battery voltage when the key is turned on. The green wire should be the kill wire to the coil. Red is positive, engine block and frame are ground. Check battery voltage with a voltmeter with the engine running full throttle to see if it's charging. If voltage builds up to 13 to 14.5 volts, then you're charging ok.

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 Off
Pingbacks are Off
Refbacks are Off

Thread Tools
Search this Thread
Display Modes