Grizzly 708 problems - Yamaha Grizzly ATV Forum
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post #1 of 57 Old 06-08-2018, 07:59 PM Thread Starter
 
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Grizzly 708 problems

So with all the confusion and speculation about why Yamaha went back to the 686 I thought I would post a thread about problems members have had with the motor. I have a 2017 with just over 1300 KM (800 miles) on it. I have burned through 3 sets of back brakes and 2 sets of fronts. I have blown a shock. I will also need to replace my 2 lower ball joints as I see grease leaking from them. When I get in deep water it will stall. Dielectric grease will probably be the solution. My wife's 2017 has around 300 KM (180 miles) and has suffered a blown shock. My fathers 2017 with around 600 KM (360 miles) lost spark. It is in the dealers now. In all probability it is the CDI. They all do pop on decel which does make me believe in the back of my mind that emissions is the culprit here but I am just going on a hunch. The fact that you could almost back an apple pie in the storage also make me lean in that direction. Not one of us have had any issue with the motor itself. So before we panic and assume we were duped into buying an inferior motor just remember this. Ford and Dodge only made (real) HEMI's for a limited amount of years. Were they junk? Try buy one. I for one am not going to panic till my piston comes out the storage box.



So if you have had any problems with the engine itself please post them here. hopefully this will ease some minds.

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post #2 of 57 Old 06-08-2018, 08:14 PM
 
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Let keep it to ONLY issues with the 708 and not a pissing match.
It will mean much more if this thread stays clean and civil



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post #3 of 57 Old 06-08-2018, 08:16 PM
 
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Grizzly 708 problems

My 2016 started smoking the very next day after an oil change.

It smoked like a train for about 30 seconds to a minute when cold, then would clear up for the rest of the ride.
A mechanic said I had gummed up oil rings due to burnt oil
After a combustion cleaning for 24 hours and an oil change again, it was fixed. Never smoked since
Thatís been at least 2000 km ago.


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post #4 of 57 Old 06-08-2018, 09:00 PM
 
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My 2016 was going through oil at about 800kms but didn't seem to smoke, not on start up anyway, I believe it was a combo of running to thin of oil-0w30 semi and not fully broken in yet, moved to 5w30 and oil use stopped, engine could have fully seated in at around the same time as the oil swap, never used oil sense, 4800kms

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post #5 of 57 Old 06-08-2018, 09:43 PM
 
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Mine had about 1300-1400 miles on it when the smoking started


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post #6 of 57 Old 06-08-2018, 09:51 PM
 
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I know you asked for issues but there's a lot of folks that have had great performance from this engine. I don't have a 708 Grizzly but I do have a 2016 Wolverine R-Spec. I'm at about 830 miles at about 80 hours. I've only had it a year and no engine issues so far. I'll report back if something comes up. Only issue I've had with the SXS is my floor boards were cracked when I picked it up. Those were taken care of under warranty.

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2005 Grizzly 660 SE (bought used in 2018)
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post #7 of 57 Old 06-09-2018, 06:39 AM
 
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I know lots have great luck with their 708ís... I love mine despite the issue I had.
However
I think the OP was trying to get some real count on how many people had problems.
Then we could really see if the problems were just couple people and a load of hype and fear mongering, OR were there enough people to warrant concern.



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post #8 of 57 Old 06-09-2018, 07:57 AM Thread Starter
 
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Quote:
Originally Posted by Madkawi750 View Post
I know lots have great luck with their 708ís... I love mine despite the issue I had.
However
I think the OP was trying to get some real count on how many people had problems.
Then we could really see if the problems were just couple people and a load of hype and fear mongering, OR were there enough people to warrant concern.



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That is exactly what I was up to. It seems like some people may think the sky is falling, And I thought If I could post about 3 708 grizzlies with zero motor issues it may help. Other then smoking/oil and popping on decel (which is emissions) I have not read of any problems. There was one on here with motor issues but he also had snorkels and pictures of him in some deep water before the post about the motor.


I think that on the largest Yamaha forum on the internet we should be able to solve the mystery without any documentation. If a bunch of us have 708's and have no motor issues then either we are unimaginably lucky or they changed the motor for other reasons. On the other hand if there is an issue with the motor there are millions and millions of people that don't take the time to read and research. They will buy.

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post #9 of 57 Old 06-09-2018, 10:14 AM
 
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No motor issues on my 2017.
So you're trying to document that most 708 motors have had no problems at all by thinking that everyone with no issues is going to post about it on the internet? Even if 50 different users post that they've had no problems doesn't mean that there are only 50 good Grizzlies out there. It just means that the vast majority of 708 owners are out riding a reliable and well-performing machine.
On the other hand, somebody has an issue, they be certain to piss and moan about it on the internet until everyone thinks they are all junk.

I'd be willing to bet - if we had records of all the warranty/service issues of the 686 engine in it's first 3 years, and compare it to the number of warranty/service issues of the 708 in its 3 years, there'd be very little difference in the numbers. Just that in '07, there was not a social media epidemic where everyone got all publicly dramatic every time they had to take their quad to the shop.

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post #10 of 57 Old 06-09-2018, 10:16 AM
 
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I get exactly what you're saying about trying to put the myth to rest. Seems like people read about one guy with an issue and assume that ALL machines are going to have the same problem - which simply isn't true. They spend more time worrying about having a problem than actually riding. A newer member on the Wolverine forum was planning to buy a 2018 R-Spec and posted a thread asking about issues with the 708 before he pulled the trigger. I read that forum everyday (just like this one) and there were a couple of serious issues with engines over there that were definitely manufacturing flaws. From my recollection, another 4-5 other guys with oil consumption. The guys with serious engine issues were taken care of under warranty. Some of the oil consumption guys were out of warranty and had to foot the bill. I'm guessing here, but I don't recall reading about more than 6-8 reported issues with the motor here too. I could be wrong but to me, it still feels like a very small amount overall. If I were in the market for a new Griz, I wouldn't hesitate on a good deal on a 708. I know Reogem has put 7K miles on his Kodiak. There are also Wolverines with 5-8K on them with no motor issues too.

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ITP 212 12 inch wheels - 26" Bear Claw HTRs - JBS Sheave with .5 mm shim - Yamaha Glide Plate - Ricochet A-arm guards - Moose Front & Rear Bumpers - PowerMadd Hand Guards - Pelican 1470 case - Black Boar Boar storage box - Symtec Heated Grips - Warn RT30 Winch - Moose 60" straight plow - ROX Speed Riser Kit - Sirius LED bar and cubes

2005 Grizzly 660 SE (bought used in 2018)
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post #11 of 57 Old 06-09-2018, 03:04 PM Thread Starter
 
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Quote:
Originally Posted by 2wheelATV View Post
No motor issues on my 2017.
So you're trying to document that most 708 motors have had no problems at all by thinking that everyone with no issues is going to post about it on the internet? Even if 50 different users post that they've had no problems doesn't mean that there are only 50 good Grizzlies out there. It just means that the vast majority of 708 owners are out riding a reliable and well-performing machine.
On the other hand, somebody has an issue, they be certain to piss and moan about it on the internet until everyone thinks they are all junk.

I'd be willing to bet - if we had records of all the warranty/service issues of the 686 engine in it's first 3 years, and compare it to the number of warranty/service issues of the 708 in its 3 years, there'd be very little difference in the numbers. Just that in '07, there was not a social media epidemic where everyone got all publicly dramatic every time they had to take their quad to the shop.
Read what I wrote, Then read it again and again until you understand what was written. When you understand what I have wrote please feel free to comment. If all you have time to do is skim through and read what you think I wrote, Take your snarky comments, shine them up, Turn them sideways and shove them straight up your A$$.

If you think that was stupid, Just wait until you see what I do next

2017 Grizzly SE Tactical Black
27" Zilla's
Purple spring
HMF Exhaust
HMF Optimizer
Trailblazer ATV Trunk
Heat Demon heated Grips and Thumb Warmer
Rear Fender protectors with foot pegs
Warn 3000lb winch
PowerMadd hand guards
N2Deep Rad Relocate


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post #12 of 57 Old 06-10-2018, 09:25 AM
 
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For the record, I was one who reported engine smoking on my '16 however it turned out to be my fuel tuning. I had managed to get it running so rich it was smoking on start up. After getting properly tuned with Dyno and A/F meter all is well.

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post #13 of 57 Old 06-12-2018, 07:04 PM
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I have a 16 grizzly with 88hrs and 1,945km and it just recently started burning oil on start up. I’m 53 and use the ATV exclusively on back roads very easy riding, totally stock and it is meticulously maintained...
I opted not to buy the extended warranty as I previously owned a 2004 Grizzly for 10years with no issues except for a wheel bearing....thought I was getting the same quality ATV....

Very disappointed in this ATV with no help from the dealer or Yamaha Canada 😔
 
post #14 of 57 Old 06-13-2018, 04:33 AM
 
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Grizzly 708 problems

This is NOT about saying all machines are bad.. it IS about trying to get an approximate number on how many 708ís had problems with the motor itself.
With Thousands of members on this forum we should get a good sample percentage.
Itís not about scaring guys away.. if a person sees there are 36000 members of a forum and only 12 had motor issues, he/she can conclude from this, that problem rates are low.

I love my 708 and it works mint now.. that said it went through puberty and had its turn with the Smoke clouds like some others did.



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post #15 of 57 Old 06-13-2018, 06:52 AM
 
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I have one of the very first 708's , pretty sure one of the first ones even to be on the forum.. Also the Grizzly pictured on the top of the Mountain on the top of this Website. It is coming up on 3 years of ownership , as I took delivery July 2nd 2015. I have had zero engine issues , and love the power of the 708 vrs my old 686. I know the 07 686 was probably the slowest year, but my 16 708 smoked it in a drag race.

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