Instruction: Given a question and the related document, predict if the question is answerable based on the information provided in the document. Output only yes or no.

Input:
Question: I had read that you can adjust the speed between 7 mph and 10 mph.  Anyone know how?  Can't find in manual. thx
Document: The battery has since died and replacing it is hard to find. The speed on the razor is 10-12 mph. Enough for him to have a ball riding it eveery day since Christmas. I suspect he will get a lot of enjoyment from it. Assembly was simply attaching the steering wheel. Make sure you attach it as tight as you can with the allen wrenches.
My 5 year old was thrilled with this product. As he normally drives safely at 10 mph, it would have been better to get a gas ATV. The battery does not last more than a half hour and since the battery is not removable, we can't charge a back up battery.We have also found that when it is very cold out, he can not ride it as it makes a clicking noise.He still loves it and we are glad we got one for him.
Unfortunatly this item broke after the first day that my son rode it on Xmas day! I have been waiting on the new part from Razor now for 2 weeks, as it was supposed to be here in 7 to 10 days. I have not been successful at reaching anyone at Razor and cannot even get through on the number that was provided.Needless to say I have not been happy with this purchase up to this point!
The Quad is is nice. My son is 7 and this is his fourth battery/electric powered vehichle is this is by far the best. The construction of the vehicle itself is great, it's sturdy tough quality. It comes shipped to you already assembled except for the handle bars because you can adjust them according to height. My favorite feature are the wheels. They are not plastic like the other vehicles they are rubber, better traction outdoors. Great Quad! Nice Speed too.
Only after we got this did we learn about the battery issues; owner's manual says "up to" 40 minutes run time. Are they kidding? At this price 40 minutes?? I've emailed to see if there is an upgrade battery, couldn't find one on their site. Not worth the $$$!
I had read previous reviews about the battery charge being 'short' but we haven't had any problems with that. It has a battery strength indicator letting us know how much "juice" we have left (love that) and also is a smooth quiet ride. Although it is just right for my 6yr old it also has enough torque for my 15yr. old who is always jumping on for a quick spin. I would recommend this product to a friend.
For the past 2 years it has been a great little 4 wheeler. I never ran it with the original batteries so I don't know how long it would last. Judging from the reviews I read before purchasing it, I would guess 30-45min being lucky with fresh batteries. I replaced the original batteries with Odyssey pc680(x2) batteries and use a three bank 40-amp Odyssey charger to charge it. The batteries don't just swap out.
It is extremely durable and both my son and my daughter ride it to its fullest speed all over our back yard (with many turns) and neither of them have had any issues with it turning over. However, to be on the safe side, I always make both of them wear helmets. I would HIGHLY RECOMMEND THIS product to anyone who is considering purchasing it. You won't regret it! !
The top speed is enough to enthrall my children yet not so fast as to keep me chewing on my nails! I have no complaints about the battery life. The battery for us has so far lasted about 2 hrs - enough that my kids have had their thrill and are ready to move onto something new. I would highly recommend this to anyone with active boys in the 3-8 yo range.
Loved it while it worked. Got almost three years out of it. And almost another two years trying to fix it. This could carry me at 215 lb, I rode it across my yard once just fine. Carried my daughter great on flat surfaces, but not enough power to go up a hill. Went about 10 mph (best guess), and got their instantly with her on it! We put on a some bike accessories, lights front and rear, basket, tail bag.
Answer: yes