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Sunday, December 8, 2019

A Murray ELECTRIC 20 Snow Thrower


A roadside find.


Overall from the outside, it looks to be in remarkably good condition. It's a 12A, 20 inch swath single stage machine.

Model No. is 620000X30NA
S/N 735492872S2C050C
D.O.M. 2002.10.14

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Something looks and feels fishy about the 'On' trigger though. There appears to be a missing safety interlock key, and the trigger's action doesn't feel right.


And sure enough, plugging in the snow thrower and trying it results in nothing. 'Time to investigate how the mystery interlock operates.

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It turns out that that hexagon at about the centre of the above photo has to be turned slightly in the CW direction to enable the switch lever. The machine does run with that detail attended to. So, now I know that the machine only needs a replacement key (P/N 583356) in order to be operable. The next question is, "What's the condition of the drive belt?"

If the belt is good, this may be a saleable machine. If belt replacement is called for, a new belt may be too much money. (Belt P/N is 760976MA.) We'll see. 'Time to get the belt cover off for a look see.

Belt Cover Removal

It's quite an array of fasteners that hold the belt cover in place.

  1. At the front there are five 10-24 x 1/2" hex washerhead bolts, 5/16" across flats (A/F) with 3/8" A/F prevailing torque hex nuts.
  2. At the bottom-front, there is one 10-24 x 1/2" hex washerhead bolt, 5/16" A/F with a 3/8" A/F prevailing torque hex nut.
  3. At the upper-rear there are two 1/4" x 3/4" hex washerhead threading screws, 3/8" A/F.
  4. At the lower-rear toward the front, there's a 1/4"-20 x 1/2" hex head screw, 7/16" A/F, with a flat washer. It's important that this 1/2" long screw be reinstalled at its correct location. A longer screw here might interfere with the drive belt.
  5. At the lower-rear toward the rear, there's a 1/4" x 3/4" hex washerhead threading screw, 3/8" A/F, with a flat washer.
And with those ten fasteners removed, one has access to the drive belt, like so.


And as it fortunately turns out, the belt is in fine condition, and all is in good order with its pulleys.

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So, if I can obtain a safety interlock key, I'll have a saleable machine here.

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2 comments:

  1. These are great machines.... only problem is that the housing wears down with use which eventually causes the auger to make too much contact with the ground.

    Parts are impossible to find unfortunately - or they are worth more than a new machine.

    Hope you got yours working again

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  2. Winter is here and it's time to break out the snow blower! A snow blower is a great tool to have during the winter months when the snow starts to pile up. It makes clearing snow off your driveway and sidewalks so much easier and faster. It's definitely worth the investment if you live in an area with frequent snowfall. Thanks for sharing your insights on snow blowers! Recently I bought Toro Cordless Snow Blower from Centereach True Value. Its working fine.

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