Hyster S50XL:
Which engine do I have?

I have a Hyster S50XL, SN C187V10599R.

After doing some research, I believe that I have the GM 3 liter but want to make sure.

  • Posted 23 Aug 2016 04:20
  • Discussion started by Carapace
  • Florida, United States
Showing items 1 - 5 of 5 results.
Thanks all! I did verify that I have the Mazda M4-121G engine yesterday. It took a lot of digging on line. I read a TON of stuff and finally ran across some similar posts and other technical specs that led me to that answer. Getting verification here was the icing on the cake. Thanks again.

It's still crazy to me how difficult it is to figure out basic details, even with serial numbers, etc. I guess it is more about protecting the service industry than transparency. Imagine that!
  • Posted 24 Aug 2016 21:34
  • Reply by Carapace
  • Florida, United States
GM was commonly used in that year model truck but the mazda was also an option.
There were 3 GM engine models used: 4-153, 4-181 AND 3.0L engines and only 1 Mazda model engine M4-121G

one way to tell is to look at the valve cover

The GM valve cover is long straight and has filler cap near the rear of the cover and PCV valve at the other end of the cover.

The Mazda (M4-121G) engine is different in that it has a slant to the valve cover, a breather in the middle in the slanted part and the filler cap on the rear side of the valve cover.

Note: orientation may sound confusing but when i say "rear" of the engine it is the "actual" rear of the engine. It does sit in the truck backwards so keep this in mind.
  • Posted 24 Aug 2016 08:59
  • Reply by swoop223
  • North Carolina, United States
You've been swooped!
I looked that model up on X Part and the motor options are GM 3.0, Isuzu diesel, or Mazda. The older model S50XL used a GM 2.5, but not the one you listed.
  • Posted 24 Aug 2016 02:49
  • Reply by mrfixit
  • New York, United States
Are you sure? Why do you say that?

I will clean the block, etc tomorrow, so I should be able to get some definitive answer, but just want to know if there is some easy way to know for sure.
  • Posted 23 Aug 2016 10:54
  • Reply by Carapace
  • Florida, United States
That's sounds right.
  • Posted 23 Aug 2016 08:02
  • Reply by mrfixit
  • New York, United States

Having trouble using the Discussion Forums? Contact us for help.

Forkliftaction.com accepts no responsibility for forum content and requires forum participants to adhere to the rules. Click here for more information.

Safety in operations is gaining increasing attention these days. Potential risks associated specifically with warehouses and production areas are becoming especially apparent at times when goods handling is extremely busy. However, the growing portfolio of safety solutions from Linde Material Handling (MH) can assist.
Genkinger has been creating robust, durable and customisable solutions for materials handling in the sheet metal industry for over 100 years.

Fact of the week

John Lennon had terrible eyesight and was very self-conscious about it. Early in his career, he would not wear his glasses during performances. In the end, John's 'granny glasses' became one of his most iconic trademarks. His last pair, worn on that tragic day in 1980, are kept at 'The Beatles Story' exhibit in Liverpool, insured for over £1 million.

Latest Jobs

Peoria, IL, United States
Oklahoma City, Oklahoma, United States
Louisville, Mississippi, United States
Columbus, Ohio, United States


Taylor TXB180S
United States Pennsylvania
United States Pennsylvania

Your Focus

Stuart Taylor
Stuart Taylor
StocExpo has undergone a rebrand, celebrating the evolution of its exhibition and the energy industry. StockExpo will be held from 14-16 March 2023 at Rotterdam Ahoy, Netherlands.
UN's new NL series lithium battery forklift, with capacity from 2,000 to 3,500kg, uses IC forklift's tough design with electric forklift benefits, making it convenient and efficient.