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Craftsman leaf blower impeller nut keeps coming loose

#1

J

jake18v

I got an old Craftsman 32cc leaf blower my Dad had sitting around in his shed(1989??? model). I had to clean out the carb and replace the fuel line & spark plug. She ran really good all fall. Then around Christmas, the blower was running rough and then the engine just died. I couldn't get it to start at all.

I opened up the door for the impeller and found the nut there was hand tight. I replaced the nut with a locknut and she ran a couple times and then I had the same issue. It ran rough and died quickly. And sure enough the locknut was loose.

Any idea what's causing this issue?

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#2

M

mechanic mark

Pick up a tube of blue Loctite & apply a small amount to threads.
Walmart & auto parts stores should have it available.


#3

J

jake18v

Pick up a tube of blue Loctite & apply a small amount to threads.
Walmart & auto parts stores should have it available.
I can definitely try that. I've got both red and blue loctite sitting around.

I'm wondering, what's going on with the blower to cause that nut to come loose. Is there excessive vibration caused by another broken part further upstream?


#4

I

ILENGINE

It looks like the plastic impellor can wobble on the hex part of the shaft. Maybe it is moving around loosening the nut.


#5

StarTech

StarTech

It looks like the plastic impellor can wobble on the hex part of the shaft. Maybe it is moving around loosening the nut.
Yes that would do it and I have a replaced a few fans because of it here.


#6

M

mechanic mark

If you continue to have same issue as ILENGINE described go to Home Depot & pick up an Echo & use their 2 cycle oil. I always use 93 octane gas & Star Tron fuel Treatment!


#7

J

jake18v

It looks like the plastic impellor can wobble on the hex part of the shaft. Maybe it is moving around loosening the nut.
That would make sense. Perhaps the nut got loose at some point and the plastic on the impeller started getting worn down to the point where it no longer has a tight hexagonal shape. Now it wobbles so much that it can loosen a locknut.

The impeller part number is 530-014157 according the the manual (link below). I searched that part and came up empty on the internet.

But according to jackssmallengines.com 530-014157 has been "superceded" by 530047077 and is in stock. Anyone have an opinion if this part will actually fit?

jackssmallengine search:

Manual.


#8

I

ILENGINE

My poulan/husqvarna parts distributor shows the 530047077 as the superceded part number. And you need to order it since my distributor also shows it as NLA

I got thinking that that hex part that is sitting inside the fan is supposed to be one piece with the fan not two separate pieces.


#9

J

jake18v

My poulan/husqvarna parts distributor shows the 530047077 as the superceded part number. And you need to order it since my distributor also shows it as NLA

I got thinking that that hex part that is sitting inside the fan is supposed to be one piece with the fan not two separate pieces.
I’m going to pull it apart today and get a better look.


#10

J

jake18v

I took it apart and the plastic hexagonal hole in the center of the impeller is smashed. I think when I cranked down the locknut it smashed the plastic. It seems to be working with a locknut and a lock washer. But the air speed doesn't seem adequate at all. Nothing near the power it had last fall. Could that be a sign the impeller needs replacement?

Any other items you guys would order to get this old blower working? I'd like to combo everything on one order now so I only have to pay one shipping charge.

Thanks


#11

StarTech

StarTech

My poulan/husqvarna parts distributor shows the 530047077 as the superceded part number. And you need to order it since my distributor also shows it as NLA

I got thinking that that hex part that is sitting inside the fan is supposed to be one piece with the fan not two separate pieces.
on this particuar blower it is a separate piece but it is NLA now. THe impeller 530014157 was superseded to 530047077 but it is also now NLA. USing 530047077 the OP may be be to find a NOS one.


#12

J

jake18v

Another obvious problem with the blower is the pull cord never fully retracts into the housing. There is always like 4-5" of stick-out. If I tighten the impeller nut the cord fully retracts. But as soon as I pull the cord, it will have that stick-out issue.


#13

J

jake18v

I called jacks small engines & ahupd. Neither of them have the part 530-047077. My best shot is buying the impeller off ebay for $20-$35. Debating throwing in the towel and buying a new blower.


#14

G

Graeden

I called jacks small engines & ahupd. Neither of them have the part 530-047077. My best shot is buying the impeller off ebay for $20-$35. Debating throwing in the towel and buying a new blower.
If you want to repair the impeller, purchase a stick of jb weld putty, combine the product, flatten it, form it inside of the hex, place the impeller back on to “form” the putty to the hex shaft, pull it back off, trim the excess putty off the edges, let the jb weld finish setting up, and reinstall.

edit: You can also use a hex nut that will fit inside of the blade, then use a drill bit the size of the motor shaft to drill out the center of the nut to remove the threads . Then use epoxy to set the nut into the impeller. The question then is how much time you want to spend repairing this, or if spending $80 is worthwhile.



#15

S

slomo

Replace the fan and nut. Use an aircraft nylon locking nut and red thread locker. Blue thread locker is only medium strength. Red is darn near permanent.

slomo


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