Inherited Craftsman 5.0 HP - Starting Problem - Snowblower Forum : Snow Blower Forums
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post #1 of 42 Old 01-12-2015, 01:17 PM Thread Starter
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Inherited Craftsman 5.0 HP - Starting Problem

Hello all. I'm new to this forum. I inherited a Craftsman 536.885213 5.0HP 21" single stage snowblower with electric start from my mother's home last spring.

I cranked it last week, and there was a strong "varnish smell". Uh oh.

So, I removed and cleaned the carburator (Tecumseh 640342), cleaned the spark plug, removed and cleaned the gas tank, replaced the fuel lines and in-line filter, and re-assembled.

Electric cranking this weekend - and no start.

The spark plug is "wet" after cranking.

The carb bowl has clean fuel in it after cranking.

I don't know where else to go - and am not experienced with engines at all, although I'm okay mechanically.

I'd appreciate your thoughts on what steps I should go to next. Thanks in advance for any and all help. Phil g.
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post #2 of 42 Old 01-12-2015, 01:56 PM
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Check for spark.

I use an adjustable-gap spark plug tester (check ebay, amazon or your local parts store). Set the gap to "SE" (small engine), connect the clip to the engine block, connect the other end to the spark plug lead. Pull the engine over a few times and look for a strong-blue spark.

One word of caution, I usually do this with the plug installed; its a little more compression but you're not creating a fuel cloud next to a spark tester


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post #3 of 42 Old 01-12-2015, 01:59 PM
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Sounds like you need a complete carb cleaning and rebuild. ALOHA from the frozen tundra.

Long LIVE THE POWERSHIFT!! MAY IT NEVER RUST IN PEACE!!
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MAHALO!!!!!!!!!
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post #4 of 42 Old 01-12-2015, 02:00 PM
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Let it dry out and off, and check your spark. It is also not uncommon for the coil packs to go bad. It's not hard to swap, but you are going to need the engine model numbers. If it's a tecumseh, which I suspect, they will be on the engine tin, near the spark plug.

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post #5 of 42 Old 01-12-2015, 02:11 PM
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Quote:
Originally Posted by classiccat View Post
Check for spark.

I use an adjustable-gap spark plug tester (check ebay, amazon or your local parts store). Set the gap to "SE" (small engine), connect the clip to the engine block, connect the other end to the spark plug lead. Pull the engine over a few times and look for a strong-blue spark.

One word of caution, I usually do this with the plug installed; its a little more compression but you're not creating a fuel cloud next to a spark tester
Here's the spark tester in use (no plug in this picture...I just finished rebuilding this engine...no fuel & I was spinning the flywheel by hand )


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post #6 of 42 Old 01-12-2015, 02:12 PM
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Quote:
Originally Posted by classiccat View Post
Check for spark.

I use an adjustable-gap spark plug tester (check ebay, amazon or your local parts store). Set the gap to "SE" (small engine), connect the clip to the engine block, connect the other end to the spark plug lead. Pull the engine over a few times and look for a strong-blue spark.

One word of caution, I usually do this with the plug installed; its a little more compression but you're not creating a fuel cloud next to a spark tester
Good advice about the fuel cloud. I worked with a tech that checked for spark, well it had spark. He now has burn scars on his face and left arm. He was out of work for several months.
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post #7 of 42 Old 01-12-2015, 03:36 PM Thread Starter
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Wow. Thanks, everyone, for your replies and well wishes. I'll get a spark tester on my way home tonight and will test soonest. I'll report back.

@powershift93: you may be right.

@classiccat: thanks for the caution.

@db9938: if no spark, I'll be following your advice next...
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post #8 of 42 Old 01-12-2015, 06:06 PM
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Uh oh, well I'll apologize in advance. I may be off line tonight, it's a state holiday.

Garage:
MTD....2 stage(modern 8.5 HP) not my favorite
Honda HS622 TA-B - acquired at an auction- nice machine for it's size.
Toro S-140- Picked it up on trash day... it runs, sort of.
Yamaha YS 240 TB "Ricky" latest Craigslist find- on the bench now.
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post #9 of 42 Old 01-12-2015, 06:12 PM
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Uh oh, well I'll apologize in advance. I may be off line tonight, it's a state holiday.
we got you covered... what state holiday is it?
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post #10 of 42 Old 01-12-2015, 06:32 PM
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i think db thinks it's next monday. MLK day.
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