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Husqvarna 50 Chainsaw

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Chuck
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2019/02/03 11:44:34 (permalink)
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Husqvarna 50 Chainsaw

Hello! I have a Husqvarna 50 Chainsaw which is about 30 years old but works like a charm. The on/off switch stopped working. Husqvarna customer service had no records on a model 50 but suggested that switch # 503717901 would work. I replaced the switch with that part number which did not fix the problem. When I disconnect the wire from the switch and ground it out to a bolt, it kills the engine leading me to believe that I got a bad new switch or that part number will not work with the older model 50. I am a homeowner with some basic skills and common sense but am I missing something? Any help would be appreciated.
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    Roy
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    Re: Husqvarna 50 Chainsaw 2019/02/03 12:24:04 (permalink)
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    ? The 50 Rancher was very popular. The switch is mounted in plastic, it needs to ground. IIRC it is a  toggle. Crimp a ring terminal that fits over the threaded portion to a short wire that runs to a screw on the engine, a coil mounting screw works well here.
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    AVB
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    Re: Husqvarna 50 Chainsaw 2019/02/03 12:59:34 (permalink)
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    Very strange indeed as I just pull up 8 IPLs for the 50 chainsaw on their Manuals and Download site. Apparently you had someone unfamiliar how to search their manual site.
     
    Original switch per IPL was 501633801 which supersedes to the 503717901. For switch not working it must be grounded and on some this require a second wire to cylinder metal frame. This second wire may run all the way back the coil metal frame. But if I remember correct this saw a metal crankcase.

    post edited by AVB - 2019/02/03 13:06:38
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    Chuck
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    Re: Husqvarna 50 Chainsaw 2019/02/03 13:51:17 (permalink)
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    Thank you AVB and Roy. The depicted switch is the new one I received. The old one did not have the bottom terminal as shown. I took Roy's suggestion and made a small wire connection from that terminal too a ground and it works like a charm. Thank you both. A $6.00 part and hours of frustration but it is running like new. I never thought I would have to add a wire to an existing machine!!
     
    Chuck
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    Roy
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    Re: Husqvarna 50 Chainsaw 2019/02/03 14:28:42 (permalink)
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