New owner Massimo MSU500

[Eman85]

I just purchased a Massimo MSU500 and no manual came with it so I have some questions. looking for part #'s and availability of basics like spark plug air and fuel filter. What is the valve adjustment specifications? 

  Is there a fuel drain? It's been sitting, low mileage but I want to drain out the old fuel and put fresh. 

[Jaygyver]

Have you tried their website to see if they have a manual available? Some manufacturers do and some don't.

 You can always do a search for parts online as a lot of online stores sell aftermarket parts. Their website should have a search for dealer or service center that near you or just ask them how to get a manual.

[Joe Breaux]

Service is practically nonexistant from Massimo..but many parts are available on Amazon, ebay , Motorcycle Doctor..filters etc are plentiful and cheap.. i think mine used  plug NGK DPR 7EA9. No fuel drain that i am aware.pull the line .good luck..does it run at all now? Watch for overheating...common issue in hot weather

[Eman85]

Thanks for the reply. It runs good now, I changed the injector, fuel filter and spark plug. Set the valves and out fresh gas in it. I found some FB pages with some action. This forum is pretty dead it appears. 

[Joe Breaux]

Used to be busy..kinda died out..glad you got it running well..i would recommend retorque head bolts.

Hisun just air tools them ..head gasket failures are common..watch for bubbles in recovery tank and water in the oil.  Enjoy ..after all the repairs on mine it has fun well..use it often.

[Eman85]

 Any spec for head bolts? It has some top end noise I need to pull the side cover for the cam and check the chain. I was hoping it was just the valves noisey but I set them and it still has a rattle. Runs good and starts instantly. 

[Joe Breaux]

You need to run premium fuel..87 octane will knock..change the oil, be sure its wet clutch approved 10 w 40 or 10w30 or it will burn clutches. Dont recall the bolt torque. Try google..use LOW under 20mph and in mud or hills. Mine does well in mud..dont go in deep water, will get into trans cooling ran

[Eman85]

Fuel's not a problem, local station sells Rec gas 90 octane non ethanol. I've read where a lot of people use Rotella 15w-40, that would be easy as I buy it for my diesels in 5 gal buckets. I have run it down the road but it will mostly be used riding around my property for chores.

[Joe Breaux]

Rotella is ok..just dont use an auto full synthetic..the friction modifier package will destroy wet clutch.they are a lot of fun..and handy with dump bed and winch. Thay can tow 1500 lbs too

[Joe Breaux]

What year is yours? Bought  Mine new in 2018. 

[Eman85]

It's a 2018 shows 78 mi. but there's been someone under the hood. Old guy, even older than me and I'm old, had it and didn't use it much parked in the garage. Think owner before him was a little rough on it.  They installed a fuel filter inline and there's some replaced non original bolts on the clutch cover. Someone has had the fan cover off also. otherwise it's all in working order. Steering wheel is crooked I'm going to do an alignment and see if I can get it straight adjusting the tie rods. Wasn't sure if the steering wheel was splined and maybe off a tooth or so.

Edited May 10 by Eman85
added info