I have a generator which consists of a Honda GC160 engine and a Stephill brushless generator.

After being left for around 6 months without being run, I started it up and noticed there was no power output.

Upon inspection and removal of the top cover where the extension cord plugs in I noticed this white capacitor which has exploded. The top was slightly ajar and there is solid grey material which has come out.

I’m looking to identify the capacitor so I can order a new one.

Any help would be greatly appreciated. It’s a shame it has cracked where it has as it would make the job easier in identifying the correct replacement.

photo of capacitor

After removing the grey material which had come out:

photo of capacitor

On the top line it has

1.27.6CA3 MKP
13uf +- 5%
?????? 10000h/CLASS B
??????3000h/CLASS C


On the side it has P3 13AA

  • \$\begingroup\$ Get a service manual for it. \$\endgroup\$
    – Andy aka
    Dec 28, 2021 at 16:05
  • 1
    \$\begingroup\$ Looks like a standard motor start or run capacitor of 13uF. A motor rewinder, hvac or electrical wholesaler should be able to supply. \$\endgroup\$
    – Kartman
    Dec 28, 2021 at 16:09
  • \$\begingroup\$ Kartman - Thank you… I’m not super knowledgeable when it comes to capacitors and resistors and the like. \$\endgroup\$
    – Daniel
    Dec 28, 2021 at 16:15
  • \$\begingroup\$ Andy aka… there is no service manual for this model. It’s a company in England that make their own generator setups. They buy Honda engines and fit their own brushless motor. I have the service manual for the engine however… and for the few generators I have seen as an all-in-one from the factory, I’ve still never seen a section on capacitor diagnosis or replacement, so I don’t think your answer is all that helpful. \$\endgroup\$
    – Daniel
    Dec 28, 2021 at 16:19

1 Answer 1


This is a 13µF +/-5% 470V metalized polypropylene (MKP) motor capacitor made by Arcotronics, rated for operation from -25°C to 85°C.

It probably died from moisture ingress.


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