Hisun Axis 500 Problems - Hesitation, struggles to go up incline, and low speed regardless of gear range
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By Prepper
I'm working with a 2015 MSU-500. Basic symptoms are it cranks well, but will not fire. It has spark, and it has fuel spraying out of the injector (and spraying starting fluid into the throttle body and plug hole makes no difference). It has compression. I bought it not running, and no other information was available. It has 775 miles on it and 127 hours. It looks to be in very good shape. Previous owner replaced fuel pump, ECU, coil, plug, and the fuse/relay box that mounts on the firewall, then gave up.
My questions relate to cam/valve timing, considering the symptoms and diagnostics so far. My thinking was the woodruff key sheared off and the crank spun, making it out of time. My question is, by the pictures attached does anyone have an opinion as to the cam/valve timing being correct? In the crankshaft picture you can see a timing mark visible. In the camshaft picture I have arrows directed towards what I think are timing marks (which appear to be exactly 180 degrees from one another). However, the long arrow in what appears to be bolt configuration in line with the piston/rod line. Here is a puzzling note... in the position you see in the pictures... I have valve lash on both the intake and exhaust. I think it's at TDC, given the visible crank timing mark and valve lash on both valves.
Any thoughts ? Does this appear to be in proper valve time ? Have I missed anything simple ? Thanks in advance for your input.
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By Edelbrock
So I'm interested in a side by side of some sort.
Not sure what make/model to even look at.
I would plan on riding on trails with very rough rocky terrain and plenty of mud. Maybe sand once in a long while. I like LOTS of power and drive fast, but also like a trail that is a challenge to get through. I think 4x4 would be a must. I like the idea of a supercharged engine, but I have never owned one, and would be a little concerned about long term reliability or expensive difficult engine repairs. If anyone knows quads, my favorite was the 2008 Polaris Outlaw 525 IRS. For dirt bikes, I raced a 2008 KTM 450 SX-F. So that gives you an idea of what type of off road stuff I liked.
I don't like "utility quads" or "trail bikes". And likewise, I dont want a turd UTV. I want something that looks awesome and performs awesome. 2 seater with some cargo capacity at the minimum.
Thoughts?
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By KnS
Hey Team, our issue is not as bad as some I've read here... We put some songs one a 64GB USB stick, plugged it in and the USB icon is still greyed out and won't let you select. Any suggestions? All the songs are in the root directory. Thanks, Kevin & Shelbie
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By Xov
Just received delivery of a 2024 AMP Pro. Thought I'd start a thread with my impressions as I use it and learn more. There doesn't seem to be a whole lot of real-world usage information out there on this model. Hope this will help others as they research.
Intended Use Cases
Fire mitigation / slash removal from a 5 acre forested and well-gamble-oaked property. The previous owners thought as much about fire mitigation as I do about fashion: not much. Snow removal Stump pulling General hauling (rock, lumber, etc.) Weimaraner energy depletion. Wasn't an original use case, but a nice added bonus. Experiences So Far
Wasn't impressed that two of the bumpers on the underside of the bed where it sits upon the frame were missing. The metal on metal contact has damaged the powder coating and the frame. I expect a little better QC.
I've only put a few hours on it, so not a ton to report on usage. It isn't quiet; it's silent. I can't even detect an electric note from the motor. I removed (and subsequently replaced) the motor cover noticed that the motor is German and made by Schambuller. The motor controller is Italian and made by Dana TM4. Given the operating specs of both I found on the web, I suspect both are higher quality than the previous Navitas (which is supposed to be decent). The motor is rated at 25 hp and 71.5 lb-ft of torque. It feels very powerful. All the torque is delivered instantly, if desired.
The bed is huge and has an electric dump as standard. Great feature but would like it to go up a bit more. Probably not feasible from an engineering perspective, but I want and I need ;).
Power steering is nice, but vague. Probably common to many UTVs, but I am accustomed to more direct results from input. Plan early and plan often.
In our first full day of usage, we hauled about 1/2 as much slash as the entire rest of the year when I was doing it by hand cart. I may get fatter, but I'll also get more done. After a few days of usage, the battery meter has gone down by 1/10th.
Until next time...
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By Paul L
When I am driving at 30 to 40 mph on the highway, the display will change from H (high) to R (reverse). It does not actually shift into reverse, it seems to shift into neutral and starts losing speed and the gas pedal has no effect. After the rpm/speed drops for 5 seconds or so, it changes back to H and runs fine for another minute or so. You have to try to drive it at less than 5000 rpm or so, to try and keep this from happening. Any ideas on what the problem might be? It only happens at the higher speeds.
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