2021 Massimo MSU 800 will not run above 20 MPH
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By Jim D
MSU 500 does nothing when you turn the key. No power to display, fuel pump or anything. Come back a while later and everything works perfect. Starts right up. Battery is fully charged. Could this be the ignition going bad. When it doesn't power up I've found nothinf that will correct it other then waiting and trying later.
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By hdtran
That's the question! Or, if you want to add details:
(a) How do you use the UTV? (roads? off-road to get to trees? etc.)
(b) If you are wearing a helmet--how frequently? What type of helmet?
My own answers: (a) Most of the time off-road to get to downed trees, cut the trees to logs and haul the logs back for splitting. (b) Very rarely, a ski helmet and not a motorcycle helmet.
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By Chile
I have a 2018 Massimo 700 MSU with the Delphi MT05 ECU.
I have seen an alternative ECU reset procedure that involves running the engine at WOT for 5 seconds in neutral and then shutting down while throttle still at WOT. The articles include comments that the rev limiter will prevent engine overspeed ad attendant damage.
1. Is this actually a recommended procedure for restting the ECU on a 700 MSU?
2. What is the rev limited maximum RPM for the 700 MSU?
I initiated this procedure but when the RPM exceeded 6000 I immediately terminated the process. It simply seemed excessive to me to continue.
Any and all responses are greatly appreciated.
Chile
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By Steve B
My "R" light on the dash will not go out when I take the UTV out of reverse and put it into any other gear. Is this just the light switch issue or will this effect engine performance in the other gears?
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By Travis
Many people have issues with the kawasaki FJ400 engine fouling out spark plugs, after working on a few FJ engines and 600 series Mule's with this issue, i can say the fix for this issue is using a slightly hotter spark plug... the factory recommends a BPR6ES NGK plug.... the Number in NGK plugs represents its heat range and somewhat odd, the lower the number the hotter the plug, at least as far as NGK is concerned. If you have a Mule fouling spark plugs try installing a NGK BPR4ES spark plug.
FROM NGK
A hotter heat range spark plug has an insulator design with a longer heat flow path to the metal shell of the plug. As a result, more heat stays in the ceramic firing end and less is dissipated to the engine. A colder heat range spark plug has an insulator design with a shorter heat flow path to the metal shell of the plug. As a result, less heat stays in the ceramic firing end and more is dissipated to the engine. For a spark plug to function properly, it must have a tip temperature high enough to burn off carbon deposits (self-cleaning) and avoid fouling, while remaining low enough to avoid overheating the ceramic firing end and pre-ignition.
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