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I work as a mechanic for the transit company in Seattle. Been there for 25 years now. We often have buses with dead batteries in the yard, mainly from sitting so long waiting for parts. But that's a whole other problem! I always cringe when I see other techs who will routinely jump start these...

Depending on what batteries you’re using and the state of charge that they have you may be asking too much from your alternator. Try charging your batteries before starting the machine. It is a common misconception that alternators are battery chargers. They are not. When we try to charge...

I have a 804b model, also with the Yanmar 2.0L turbo. It's interesting that we have two different alternators.

It appears that we have two different model of alternators. The one that I have is a Hitachi LR220-24V. I don't know if the internal parts are interchangeable.

It looks like the seller still has one left. if you type in HITACHI 20 Amp Alternator For Isuzu 4JB1 Engine 1988-On LR220-24 as a search you can see if this will work for you. I don't have any photos of the parts one that I have.

When I bid on my MEP-804b last September I failed to see that it didn't have an alternator on it. Of course I had to find one when I brought the unit home. I found a new one on eBay. It wasn't too awfully expensive but it arrived damaged. I contacted the seller and they sent me another one no...

I forgot to mention that the individual wires are very clearly labeled on these machines. When you look at the schematic on the inside of the access door it very clearly shows the correct location of all of the wires on the back of the alternator. If you have an ohm meter you can check the...

I was previously instructed by the very patient "Guy" to hold the S1 in the full right hand crank position for 4 - 5 seconds AFTER the engine starts. He was correct...this will clear up some of these faults that sometimes occur at start-up. It seems to be "a characteristic of the beast" for some...

Nice looking unit. I will hesitate to comment on the 240V capabilities of the MEP-804B as I simply don't have the experience. I double checked and everything in my house is ok with 208V, so I don't have an issue with using mine the way that it is. However, the 4 wire hook-up that you described...

Just a little extra personal experience with your specific generator. I've been using a MEP-804B as a whole house back-up power supply since September 2020. I live in Enumclaw, Washington and I lose power a few different times a year. The "unbalanced load" issue that has been discussed here...