22 HP with Spark Advance Module

mnjoe · Sep 3, 2011

My mower quit. Only shows spark at the plug when I quit cranking. SAM got hot and started to smoke. Bought new SAM (Spark Advance Module). Installed nre SAM mowed about 4 hours ran great. It quit..same s*&^ again. Found a blown fuse replaced. Tried to start SAM started to smoke. What is my problem..Are my ignition Modules bad..Thanks

buickanddeere · Sep 3, 2011

Is there a heat sink base? Was there any thermal conductive grease used?
Electrical system voltage?
High resistance "ground" connections?

mnjoe · Sep 3, 2011

No heat sink base that I know of. Didn't find grease when I pulled the wires apart. Voltage is 12.5 volts at the battery.will see what I have at the SAM tomorrow.....Ground went back...will check ground also..Thanks Joe

Sam from WA · Sep 4, 2011

The grease isn"t di-electric grease. Your actually better off not using di-electric grease in connections as it is actually an insulator. The thermal grease bandd is talking about is a grease you smear on the base of the SAM for transferring heat.

El Toro · Sep 4, 2011

When you get it running check the charging voltage across the battery terminals. Should be in the 14.0-14.5 voltage range. Hal

buickanddeere · Sep 4, 2011

Battery voltage when the unit is just sitting isn't the issue. It's the voltage when the engine is running..............

mnjoe · Sep 4, 2011

It has been a good mower. Kohler CV22S on a Snapper Z2205K..Zero turn with a 60" deck. It takes me about 5 hours to mow around the farmyard. Installed new battery, plugs, fuel filter and SAM. It stared right up. Mowed stuff that hasn't been mowed for months (used brother-in-laws mower till I found time). Had to fix front tire...after that it didn't spin as fast as it should but did start. When it quit I could smell something and the SAM was hot. Will check charging system..Found a 20 amp fuse going to the SAM...that seems high. Will most likely need a new SAM...It fires just like the old one and ran after the new one was installed....It could be my charging system after sleeping on it...thanks again Joe

El Toro · Sep 4, 2011

Here's what that rectifier/regulator may look like. This is what Kohler has used before. The two outside terminals are AC voltage from your stator. You could disconnect the DC wire on the
rectifier and then measure your charging voltage off the DC terminal on the rectifier. Be careful where you have your fingers when doing this. Hal

22 HP with Spark Advance Module

mnjoe

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buickanddeere

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mnjoe

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Sam from WA

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El Toro

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buickanddeere

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mnjoe

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El Toro

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