NewCadetOwner

Well all seems good.  She is running fine and no temp issues.  My sughestion to all Hisen engine owners is to check the head bolt torque and make sure it is with specs.  My mechanic found mine were not and caused the head gasket to blow.  Now to figure out how to quiet here down which is my only complaint since day 1.

Picked it up yesterday and so far so good.  Replaced the waterpump also just in case and was able to use a Yamaha head gasket.  Seems to be circulating properly and runs good so fingers crossed!!!

Thanks!  The wife uses it alot so thinking the temp monitor is not a bad idea.  I did the same on my snowmobiles and has been great.  You can watch the temp start to creap up so you can take action before you run into an issue.  I dont hqve a voltmeter either so will add that at same time.

Fingers crossed!  Mechanic says its running great so only time will tell.  I think I will add a heat gauge so I can watch it and not have to wait on a light.

Well wish me luck.  After a new head, waterpump, intake manifold cover and Yamaha head gasket I pick the beast up tomorrow.  Told it runs great and should be ready to go.  Have my fingers crossed!

I have a 17 crew but dont have the same issue at all.  Did you check to see if something  is bent or needs adjustment.  Also make sure to read up on the oil level issues and keep the right amount in it.

Grewt to hear!  I just dropped new head and water pump off at the mechanic.  He is swamped but hoping to get it back in a week.  He is going to get a Yamaha gasket and see if it will work in lieu of the Hisun.   Fingers crossed.  Did they figure what caused yours to go bad in the beginning?

Great.  I have the gasket kit already.  I will see about getting the yamaha one.  Thanks for the tip.

Yeah based on your experience I ordered the waterpump with the head.  What was the problem that yours had to go back after they replaced the waterpump?

Well got report back on my 750.  Blown head gasket and warped head.  The mechanic found the head bolts were not torqued correctly and thinks it caused the head to warp and gasket failure.  

Awesome news!  What did they find this last time around.  Mine is in shop now with head coming off next.

What did it do this time?

Thats more than odd!  Did waterpump not work before causing the overheat and cracked head?  Was the waterpump leaking for them to say it is bad?

Not yet.  Just got off phone with the shop trying to get it in.   Im pretty sure it is same issue as you either a gasket or head.   Thing runs fine with no signs of a problem other than antifreeze disappearing and then overheat.  Sadly I love the machine just not the headaches.

Did you try Motorcycle Doctor in MO?  They have been awesome and have parts in stock.  I have had great luck with them.

What did you order?  I have received things pretty fast from the dealer out west

Wow.... did they have any idea what caused it?  I am waiting to get mine in shop.

So was there any damage to the engine?  Were they able to fix it finally?

Its possible he didnt get all the air out.  My dealer first said it takes 2 or 3 times to purge it sometimes.  Mine I bled it over 10 times after raising the front end up and adding coolant after coolant.  The only symptom I could find is air bubbles in coolant tank.  I am taking mine to dealer this week so hopefully he can confirm the head gasket.   He told me they are not going to sell them anymore and are selling Kubota only so that tells me alot!!

Welcome to my world.  When you fill and bleed it check for bubbles coming up in reserve tank.  Mine is doing same exact thing.  99% sure its head gasket.  I spoke to dealer and he has 3 in shop now with overheat issues and the motors are bad.  If I am lucky and its only a gasket im selling it while Im ahead and will get a Canam.

Thanks.  I did see that and wonder if the 750 is the same but just bigger.

Its starts and runs fine.  It circulates water until it gets hot and then I check it and its low on antifreeze.  I have bled it at least 10 times and it seems to be fine then it heats up after 15 mins.  No smoke and no water coming out exhaust.  I pulled the plug and its brown as it should be.  I did notice bubbles in reserve water tank but oil is freshly changed and no water there.  Based on the bubbles and continuous loss of water I fear its a gasket.  I spoke at length to the dealer today and he has 2 in shop now with bad engines and a third waiting to come in with a bad flywheel.  They stopped selling them because of bad engine issues.  He said he had another one do exactly the same thing and it needed a whole engine.  I am praying Im wrong or its just a gasket.  😔

Okay mine isnt fixed.  The light came on again today.  Thinking head gasket. 

No.  It ran 150 miles without issue.

Yes for sure.  If it needs a gasket I will have it done.  I saw what it takes to do one and keeping everything straight with the timing looks like a nightmare.