[MRCA] PU-181 Generator Fuel/Lube

[Rob Flory]

During Hurricane Irene I found my 1949 Sears Craftsman (David Bradley)
generator without spark.  Points had corroded due to too long idle in damp
garage.  Read 10Meg before I cleaned them.  Hardest part was locating a
puller to pull the flywheel.

RF

On Tue, Apr 15, 2014 at 8:05 AM, Christopher Bowne <aj1g at sbcglobal.net>wrote:

>  BTW, thanks for the source info on the Jacobsen engine pedigree..that
> info will come in handy to me , my PE-162 has a no spark condition at this
> point, might need a magneto and or a points condenser.  I have the spares
> kit it came with but after 60 years, no guarantee a magneto or condenser
> will be good.
>
>
>   ------------------------------
> *From:* Chris Bowne <aj1g at sbcglobal.net>
> *To:* Tim <timsamm at gmail.com>
> *Cc:* Military Radio Collectors Association <mrca at mailman.qth.net>
> *Sent:* Tuesday, April 15, 2014 7:12 AM
> *Subject:* Re: [MRCA] PU-181 Generator Fuel/Lube
>
>   The antique engine guys on the smokestak  forum might have some good
> advice on this.  I have run 16/1 mix in my GRC-9 PE-162 no problem using
> current manufacture 2 cycle oil.  Great multi tasking genny...it's a genset
> AND a mosquito fogger!
> Sent from my iPhone
>
> On Apr 14, 2014, at 15:38, Tim <timsamm at gmail.com> wrote:
>
>     OK Wise Guys - here's a question for you regarding engine oil and
> concentration.
>
> The PU-181/PGC-1 is a 2-stroke gas generator rated at 300W, 240/120 VAC.
> It uses a Jacobsen GE-12F engine.  The generator is designed for the PGC-1
> TTY terminal but also for general purpose use.  It has a completely
> shielded ignition system - it is radio friendly. This same engine is also
> used to power the GRC-9 DC generator adaptation.
>
> The placard on the fuel tank advises a *16:1 fuel-oil ratio*.  It states
> to use SAE 10 weight below 32 degrees F and SAE 30 for operation above 32
> degrees F.
>
> However, the Tech Manual TM11-943 "Engine Generator PU-181/PGC-1" (US Army
> 1951) states to use a *32:1 fuel-oil ratio* and it says to use SAE 10
> lube oil, it says nothing about SAE 30 or temperature.
>
> So regarding mix ratio, which is it?  I don't know if there were any
> post-1951 tech advisories that addresses this apparent discrepancy.
>
> Comments?  Thanks
> Tim
> N6CC
>
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