Problems with NF QA42 Snowthrower

[Yosemite Sam]

As advised before, get a pick of some sort and feel around in the hole for the hole in the side of the bearing. If you find the hole in the bearing then get a zirk a little bigger than the one that was in there, they also come on metric sizes.

If you can't locate the hole in the bearing, the next step is to take it apart and find out what's going on in there.

[Userj8670]

Originally Posted by Yosemite Sam

As advised before, get a pick of some sort and feel around in the hole for the hole in the side of the bearing. If you find the hole in the bearing then get a zirk a little bigger than the one that was in there, they also come on metric sizes.

If you can't locate the hole in the bearing, the next step is to take it apart and find out what's going on in there.

Thanks for the reply! I will do that when I get home wed. The orig zerk got lost and fell off somehow way back when. I have been trying to find one that does fit from some I had lying around but I am not sure of the actual size to have a starting point. The ones I do have don't seem to fit right.

[Berwil]

Zerks are sized the same as fine thread bolts (I think). Take a bolt (any thread) and try to thread it in, find out what size bolt will start to thread, I would guess 1/4" or 5/16" maybe 3/8" (if it's been repaired in the past). Then you can pick up a zerk to fit.

Bill

[Userj8670]

Okay time for an update. Tore into the blower a bit. ..I can't seem to locate the hole in the bearing so it seems it spun and that means teardown. So I took the pin out of the shaft on the chain side...stuck a wedge (See pix) in to try and move the shaft over but it only moved a little and became hung up - won't go any further. AM I missing something? I was studying the shaft and there's some sort of collar/threaded nut at the end of the drive shaft going towards the motor...do the fins on that nut have to be pryed up perhaps?...this way I can move the drive shaft the rest of the way over for disassembly


Jim

[cubs-n-bxrs]

I think if were me I would disconnect the chain and drive shaft then pull the pin that holds the whole bearing assembly to the thrower. Put it up on a work bench were you can get a better look at things. I think there is either a coiled spring pin or a set screw holding drive shaft yoke on the shaft.

[ol'George]

The drive shaft yoke is keyed to the sprocket shaft, and has 2 set screws on it. Also, on some there is a cotter pin so if all that fails, the yoke still cannot come off the shaft till the cotter is removed.
As mentioned, remove the the adjuster assy pivot pin, and slide the spline apart on the drive shaft
( you can align the splines in the felt retainer and slide it apart without bending the tabs like on a 5 gallon paint bucket)
then you can put it on the bench/vice and drive the coiled pin out of the sprocket so all will slide apart.
Note: when sliding the drive shaft together on re-assy, be sure to align the universal joints properly.
Take a pix before you slide it apart, or look under a vehicle @ the drive shaft if you are unsure.
the shaft will vibrate if it is not aligned properly.

[finsruskw]

Find the splice on the chain and take the whole darn thing apart, get it into a parts cleaner or bucket of solvent and clean everything up so you can see what you are up against.

Print off the parts blow up from the manual site and everything should be self evident as to taking it apart further.

[Sam Mac]

Is it me or does the assembly that the sprocket rides in look like it's at an angle? I would think it should run parallel to the auger.

[J-Mech]

Originally Posted by Sam Mac

Is it me or does the assembly that the sprocket rides in look like it's at an angle? I would think it should run parallel to the auger.

The chain is off the sprocket in the pics.... I think it makes it look crooked.

[Sam Mac]

Originally Posted by J-Mech

The chain is off the sprocket in the pics.... I think it makes it look crooked.

Look at post #10