PierceIt

According to the Better Business Bureau there's a lot of people waging completes about this same motor: https://www.bbb.org/us/tx/mckinney/profile/atv/hisun-motors-corp-usa-0875-90395182/complaints

Well after spending $2k to rebuild the engine (valves, piston, rings, timing chain, camshaft and sprockets) it was running as good as new again.... but only for a total of 6 hours when out of no where with no signs of issues or warning whatsoever while driving at a slow speed a loud "clunk!" noise came from the engine and the engine is totally f*cked again, dumped it's oil out everywhere and is seized up. unbelievable! Something is fundamentally wrong with this engine. Me and the mechanics are completely baffled at what a total POS this thing is. I have a giant piece of trash sitting in my shop right now that i've spent way too much money on. It's not even 3 years old yet. super frustrated. No warranty, no help from cub cadet, and the dealer where i purchased it no longer sells them any more because of all the issues they've have come back on these. This is the worst purchase i have ever made

Anyone know where to find the expected compression level when doing a compression check on a 2017 Cub Cadet Challenger 750?

Turns out the timing chain came off due to worn camshaft and sprockets. Need to replace $700 in parts. Never missed an oil change and always used good synthetic oil. The metal inside these engines seems to be very cheap metal. Pretty disappointing since it only has 180 hours on it and less than 500 miles.

Turns out the timing chain came off due to worn camshaft and sprockets. Need to replace $700 in parts. Never missed an oil change and always used good synthetic oil. The metal inside these engines seems to be very cheap metal. Pretty disappointing since it only has 180 hours on it and less than 500 miles.

I have a 2017 cub cadet challenger 750 eps (which is a hisun with some nice trimmings and a cub cadet logo on it) it was a great work horse on our ranch until it just wasn’t. First two years were great and then this last year it’s been in the shop more than home and cost me a fortune to fix. It’s needed a new inner and outter clutch, a new cvt belt, and now a new timing chain, camshaft and sprockets. The hisun engines are made with a very cheap metal on all the inside parts and the thing just wears out way too fast for a new machine with only 180 hours on it and 500 miles - and I’ve never missed an oil change or maintenance job yet still the thing has failed. Lots of forums talk about this. I’ll never buy another one. Make sure to run full synthetic oil in it to help protect the cheap metal parts in the engine and transmission. or better yet - just don’t get one. Trust me on this... next time I’ll be Saving up a little longer and buying a Ranger

I've done a dry and wet compression test and based on the results I am now leaning towards this being either piston rings or timing chain or timing woodruff key stay tuned

Thanks Travis. I should have added that have done what you suggested too - I pulled the plug out, connected it to the spark plug wire and while holding it near the engine head turned the key in the ignition. There was a strong blue spark and gas/vapor sprayed out of the engine head through the spark plug hole as the piston moved while the engine cranked. I then put a little oil and gas down the spark plug hole, re-inserted the spark plug and tried to start again. It seemed to have more compression this time and the starter cranked a bit slower for a few seconds but still the engine didn’t so much as sputter one bit or try to start. I’m at a loss for what to explore next. I’ve got gas, air, and spark. But the engine doesn’t even try to sputter or ignite. Compression might be a hair low because the starter does seem to be turning just a hair faster than usual. I had also swapped the gas out for new gas. Didn’t make a difference either.

Hi everyone - Since Hisun makes Cub Cadet Challengers i am posting this here too as well as the cub cadet forum in hopes of reaching someone who can help me. I was driving my 2017 Cub Cadet Challenger 750 EPS today on the ranch when it dies on me. It started right up - and then as i was driving after about 50 feet the engine just turned off. It was running perfect before it cut out on me. No alarms, no weird sounds or smells. It just turned off. When I turn the ignition key, the starter cranks away and the battery and starter turns fast and strong - but the engine doesn't start. I've confirmed gas flow to the carb - that the fuel filters are clean and clear. I've replaced the spark plug with a brand new one. I checked every fuse with a meter. I have confirmed air filters and airflow are good. But the darn thing cranks away without the engine even making a sputter or even attempting to fire. Is there a kill switch somewhere that could have been tripped? I checked the seatbelt sensor, the brake sensor, and parking gear sensor - all are working and i'm in Park, pressing down on the brake, and have the seatbelt latched when i try to start. but - nada! It acts like it isn't getting a spark. but like i said i put in a new spark plug. I have a feeling there is a sensor or an electrical kill switch somewhere that tripped. open to any ideas. thanks all, Pierce

Hi everyone - I was driving my 2017 Cub Cadet Challenger 750 EPS today on the ranch when it dies on me. It started right up - and then as i was driving after about 50 feet the engine just turned off. It was running perfect before it cut out on me. No alarms, no weird sounds or smells. It just turned off. When I turn the ignition key, the starter cranks away and the battery and starter turns fast and strong - but the engine doesn't start. I've confirmed gas flow to the carb - that the fuel filters are clean and clear. I've replaced the spark plug with a brand new one. I checked every fuse with a meter. I have confirmed air filters and airflow are good. But the darn thing cranks away without the engine even making a sputter or even attempting to fire. Is there a kill switch somewhere that could have been tripped? I checked the seatbelt sensor, the brake sensor, and parking gear sensor - all are working and i'm in Park, pressing down on the brake, and have the seatbelt latched when i try to start. but - nada! It acts like it isn't getting a spark. but like i said i put in a new spark plug. I have a feeling there is a sensor or an electrical kill switch somewhere that tripped. open to any ideas. thanks all Pierce