Tecumseh HH150 on a Bolens Husky 1556

Ron Maddax

New User
I'm at wits' end - I lost fire. I've tested the ground circuit from chasis wiring harness to engine; it is working fine. I've installed disconnects on the ground wire and wires going to the voltage regulator. The only way I get fire is with both wires going to the regulator unplugged. They both have battery voltage at the plug.
Can't understand why the circuit for charging the battery would affect ignition. Can anybody help
 
If this eng has solid state ign with a large cast aluminum ign module mounted over the flywheel with a single quick disconnect terminal on module & a wire connected to same that runs back to alt stator under flywheel the problem may be a bad alt stator or a bad rectifer/regulator,the alt stator has a seperate winding on it to power ign module,alt stator windings may be shorted to winding for ign module or diodes in rect/regulator bad & shorting out AC output from alt stator,this will usually affect ign also.I would replace rectifer/regulator first to see if that cures problem,right now I can't locate my HH series service manual to tell you what AC voltage should be from alt stator,one of the other guys might know & post.
 
Thanks, that is the engine and ignition system I have. Since my post, I just could not understand why I had battery voltage at the plug going to the stator. I checked the key switch against the wiring diagram; it has been wired in the 'On' position. Battery power wire from fuse link is connected at same terminal as wire from the regulator.
I removed the regulator; it shows evidence of over heating.I would like to know the specs for the stator output, especially if I can't find the OEM voltage regulator.
 
Hi Ron, I'm not sure about the HH150, but the OH160 has a 3 pin connector that the voltage regulator connects to, on those engines if the 3 pin connector has a staggered / offset to the connector then the alternator is 10 amps, if the three pin connector has the 3 pins in a straight row then its a 20 amp system, just about any rectifier regulator will work as long as you mate to the approximate amperage, many guys use a Kohler regulator and they work good the 2 outside connector are AC and the center is DC.
GB in MN
http://www.ebay.com/bhp/kohler-voltage-regulator
 
Found my manual,AC output for each stator listed below,in addition there is a link to determine which alt stator you have if same proves to be bad.

10A-3000 rpm-19v/more,3600 rpm-24v/more

20A-3000 rpm-38v/more,3600 rpm-45v/more
stator
 
(quoted from post at 01:52:49 11/07/13) Hi Ron, I'm not sure about the HH150, but the OH160 has a 3 pin connector that the voltage regulator connects to, on those engines if the 3 pin connector has a staggered / offset to the connector then the alternator is 10 amps, if the three pin connector has the 3 pins in a straight row then its a 20 amp system, just about any rectifier regulator will work as long as you mate to the approximate amperage, many guys use a Kohler regulator and they work good the 2 outside connector are AC and the center is DC.
GB in MN
http://www.ebay.com/bhp/kohler-voltage-regulator

Thanks, that helps a lot. My system would be a 20 amp. I looked at some Kohler regulators in my Oregon book and they look like the connection will work. I was considering doing without the charging system and using a triggle charger. You saved the day.
 

Thanks, you've been a big help. I kinda wish this was my tractor so that I could restore it. I'm retired from Outdoor Equipment repair and have a shop here at my house. This tractor belongs to the son of a old high school friend of mine.
 
I have wiring diagrams from my Kohler on charging systems. Hal
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