Massimo Buck 400 Check Engine Light

[Travis]

Valvoline Moto, ATV oil is good stuff.

[T-boss 410]

1 hour ago, Mackc said:

Thanks, from one Texas old codger to another Texan,  good idea, I ordered an 12 volt oil scavenger suction oil changer pump yesterday for $18 plus change from Amazon.  I also have a set of 1/2" metric deep sockets to pull the dipstick/oil filler bushing out with, I didn't get the original Spark plug wrench looking tool from the P.O. I think the dipstick tube will pass thru the 1/2" square opening in the deep socket if not I will drill it out and weld another 1/2"socket on top of it.  I have an old automatic tranny filler extended funnel to refill the oil sump with. I saw in the owner's manual that the engine holds 0,34 gallons, what a figure for an oil change! I also got a six pack of quarts of Valvoline Motorcycle/ ATV, etc., etc. conventional 10W - 40W oil ordered from Walmart.com  ($18 plus change), since I live over 40 miles from a Walmart store. The $5.99 shipping for a purchase under  $35 is a bargain for me.

I want to extend my thanks to all that have posted about this subject which is hardly worth reading in the manual

 

 

So, are you saying that it would be a waste of money to purchase the service manual?

[Mackc]

9 hours ago, T-boss 410 said:

So, are you saying that it would be a waste of money to purchase the service manual?

No,  but the time it takes  to read the thing , may out weigh the useful content, it did for me.  The pictures are few and far between and most of the directions apply to components already taken out of the UTV, how to get them out are saddly missing, like the getting to magneto, getting to the drive clutches, and belts, not even any info  wrench sizes or anything on the electric winch . 

I had already ordered a paper one when I received the download from Matt and it took it a couple of weeks to get here (from less than 140 miles) the price is outrageous , By the way. I felt like I had just gave away over $75 plus tax, shipping, and etc.,etc. I am familiar about Service manuals on a great number of old cars.   I used to restore vintage Chevrolets from the 1920s 30s and up thru the 1970s  so I have a fairly good idea what a "service-manual" should contain, I like exploded diagrams and understand what really informative images of components should look like.  (BTY I don't read Chinese, and there seems to be much lost in the translation)

Since I have the service manual downloaded on several devices and the hard copy in the shop I have used some of it, the basic stuff is the same as the original owners manual like the service manual does not have the enlightening  information that the oil filling amount is  .34 gallons.

[T-boss 410]

I guess I'll hold off then. I thought it was a ridiculous price, but I would have bit the bullet if it was useful. 

I enjoy doing my own repairs on my vehicles, and I don't know how I would find any useful information if and when I need it, but I would prefer to avoid the frustration of having an expensive service manual that won't offer any real help. 

[Joe Toup]

Agree.  It’s not worth the paper it’s printed on.  It’s about as useful as the owners manual.  I wasted $75 plus shipping and wish I could get a refund.  

[T-boss 410]

I assume that there is no aftermarket manual? I get some good information from a tech at Massimo, but I'm sure he won't continue to give me that info, since it's taking work away from a service center, and I would think he has enough to keep him busy without me bothering him. 

[Joe Toup]

Not that I’ve been able to find. I’ve looked for Massimo, Bennche, Cazador, Linhai, etc. since they are all the same with different badges.  Does not seem to be any aftermarket info out there yet. We are on our own!  If you find something, I’m sure everyone would be interested. 

[T-boss 410]

If I am fortunate enough to find something, I will be sure to post it here. For now, I will have to rely on this forum, or the Massimo tech. 

[Mackc]

3 hours ago, T-boss 410 said:

I guess I'll hold off then. I thought it was a ridiculous price, but I would have bit the bullet if it was useful. 

I enjoy doing my own repairs on my vehicles, and I don't know how I would find any useful information if and when I need it, but I would prefer to avoid the frustration of having an expensive service manual that won't offer any real help. 

Your best bet would to send a Personal Message to strike250, include your want for a Buck 400 service manual and he can email you and include an attachment that can be downloaded, It will have everything included in the $75 hard paper version except the binder and fancy outer cover.

[T-boss 410]

Unless the Buck 400 is very close to my T-boss 410, I will have to wait. 

[KentC]

The Buck is particular about gas to prevent the EFI from fouling.   It recommends alcohol free 90 octane. 

[T-boss 410]

They are the same engine, at least according to their own website. Both are powered by a 352cc fuel injected engine, which puts out 25.5 hp. My owner's manual says to use fuel with a minimum of 90 octane. 

I don't know about the rest of the drivetrain, chassis, etc.

[Joe Toup]

41 minutes ago, KentC said:

The Buck is particular about gas to prevent the EFI from fouling.   It recommends alcohol free 90 octane. 

Where did you find that information?  The label on my buck specifically states 87 octane. See bottom left of pic. It is also a 390.8 cc   Top left  

[T-boss 410]

Use only unleaded gasoline. The use of leaded gasoline will cause 
severe damage to internal engine parts, such as the valves and piston 
rings, as well as to the exhaust system.
Use 90 octane or higher gasoline

That's a quote from the owners manual. 

[j.fulciniti]

Well. yesterday I was able to get my oil changed and it was a JOB.  My neighbor has a lift in his garage so we put it up and used an impact driver to get the drain plug out.    That spring shot out and we made a mess.

Lucky for me, he's a mechanic.  We found this manual online 

https://www.manualslib.com/manual/1356653/Bennche-Bighorn-400.html?page=104#manual

We ended up changing the gear oil in the final and differential cases per the manual.  The final had some nasty gunk in it. 

If you are not mechanically inclined, I suggest taking it to a service center and have them do the required maint.    

[Joe Toup]

On 9/30/2020 at 5:44 PM, j.fulciniti said:

Fired her up, put it in low,  drove around and up and down our steep hills 4X.  Never took it out of low and NEVER saw the CEL.

Prolonged downhill in N or L does not set off the CEL but H does.

Circling back on this out of curiosity...

Did the oil change fix the CEL in H gear?  Or did you find something else?