⟐ Commented January 05, 2026 at 19:14 MST

⟐ Commented December 12, 2025 at 18:50 MST

⟐ Edited by author December 09, 2025 at 9:38 MST

⟐ Commented October 06, 2025 at 16:37 MST

⟐ Commented July 29, 2025 at 15:37 MST

⟐ Commented October 13, 2024 at 0:31 MST

Background: I have used this generator for over a year at a remote site to power my camper and tools. It has always run well and been a good purchase choice. I will say that I believe the CO detector is WAY too sensitive and shuts the engine down far too easily most of the time. My generator is located under an "open" shed, away from anything resembling a full enclosure, but it still shuts down if I don't constantly have a fan connected and blowing directly across the unit! It is simply WAY TOO SENSITIVE! That, and the fact that EVERY generator I have ever owned, including this one, uses/burns too much oil. I'll put it this way: an "oil change" is pretty much redundant because they all require almost a quarter cup of oil for every 6 to 8 hours of run time. It's just been that way for every brand (last count 4 brands, 5 generators) I have owned. But all in all, it's been good.

The Problem: The last time I used it, it ran as usual and shut down without incident. I went back to the property about ten days later. Followed my usual "startup routine", reconnect battery, turn on fuel, check engine oil, check for wasps...maybe not in that order; and when I went to start it, the engine only made a partial spin and stopped abruptly. It didn't even turn over enough to attempt to "fire up". The battery was/is fully charged. Fuel tank full; fuel (gasoline) flowing and clean. I use the electric start on the side panel (sometimes, I go inside the camper and use the remote control to start it, but usually not on the initial time. When it did the same thing on the second attempt, I then tried the pull cord to start it. Again, it came to an abrupt halt, which nearly separated the cord and/or my wrist. This "lockup" was instantaneous and without any forewarning signs or symptoms.

I pulled the start recoil unit off and checked it for problems but it was okay. I inserted a tool through the piece on the end of the crankshaft and attempted to turn the engine manually. Same result. The engine will rotate normally in either direction, I estimate, about 340 to 350 degrees of rotation then stops; a "mechanical stop", not soft or mushy. It just stops moving.

Removed the spark plug and checked for any fuel/liquid or other debris which may be prohibiting piston/crank movement. Checked valve(s) movement and push rods; piston travels freely up and down with the bit of rotation that is there; all seems well. Removed the oil fill plug AND oil drain plug (there is no sign of metal in the oil whatsoever), used a probe/scope camera in each opening (including spark plug hole) and have not seen any signs of anything out of the ordinary -- actually, remarkably clean! No stuck valves (valve lash seems ok, as the piston seems to make it to almost TDC on compression stroke when it stops moving). No loose rod bolt, no bent push rod, certainly no liquid lock. Cleaned, sanded, and inspected flywheel, magneto alignment, etc. No apparent issues there.

I have been informed that there is a nylon gear on the camshaft and I'm wondering if there may be a broken tooth/teeth that are somehow blocking rotation. Has anyone any experience with such an occurrence? Which brings me to: Does anyone have a repair / service manual for this engine? Even detailed diagrams of engine parts and design would be helpful.

My next line of thinking is, "Is there anything in the generator itself that can be locking the rotation at the same spot each time the shaft is turned?" I can't recall having ever heard of such a thing, but guess it could be a possibility. I've been told that there is no such thing as a simple set-screw/bolt or shear-pin connecting the engine and generator shafts; but it seems like that would have been a great idea in someone's engineering class. Just saying. The same source said that one must take the generator apart from the opposite end, a bit at a time, to reach the point to where the engine and generator shafts can be separated. Does anyone have information on this?

Sorry this got so long, but it's been my experience that more details get more accurate responses. I will be very grateful for any assistance or helpful information that is given. My belief is that helpful forum members are the best folks there are!

⟐ Commented August 30, 2024 at 14:59 MST

At a certain point, they have all inevitably failed in the same way. You'll put a battery in, click the power button, and the lights will come on like usual. However, you will not be getting any power all of a sudden.

These issues come out of the blue, and are not a result of drops or harsh conditions. The issue persists with any battery, and the unit never works again.

⟐ Commented April 09, 2024 at 5:03 MST

⟐ Commented September 12, 2023 at 14:40 MST

⟐ Edited January 10, 2023 at 1:14 MST

⟐ Commented July 21, 2022 at 21:53 MST