Quantcast
Jump to content


2008 Massimo 700 high speed problem


Recommended Posts

Hi all. I'm new to the site. A few years ago I bought a used Massimo. Recently I've had a issue driving above 25mph. The engine won't go any faster. In fact it seems to sputter and hesitate. The whole engine shakes. I've changed air filter.oil,oil filter, throttle cable oil/air cooler,and carburetor and still no luck. I was wondering, could it be the fuel pump. Should I invest in an electric fuel pump? I'm just not sure. It starts fine and revs while in neutral. Any advice would be great. Thank you 

Link to comment
Share on other sites

I thought and read about the seatbelt thing, I tried no luck. The red light is about two wheel/four wheel. I think it might be The fuel  pump. I have something similar to this. I was thinking changing to a micro electric pump. Any advise would be greatly appreciated

fuel pump.jpg

Link to comment
Share on other sites

You could try a fuel pump as long as it would pump enough volume for what you need. And remember most electric fuel pumps like to push not pull. So the pump would need to be close to the tank. I replaced a fuel pump on a Kohler 18hp lawn mower with a cheap electric one and it has worked fine.  But that was 1994 lawn mower not a side by side. Also if the pump supplys more gas than the machine uses there needs some place for extra gas to go so it doesn't flood the engine. 

 

Look up the specs on what the max speed SHOULD be in LOW and HIGH vs what you actually get in LOW and HIGH. A sensor could think the machine is in low when actually in high and not letting it go any faster.

 

Is it the same speed on level ground vs an incline? 

 

Really acts and sounds like a sensor or something limiting the speed. But I have been wrong before.

 

Someone more knowledgeable on the engines may be able to help.

 

Hope you get it fixed and post your fix

Link to comment
Share on other sites

Maybe take the door off and side skirt off that side to make things a little easier to get to.

 

Maybe a magnetic hex bit.

 

Use extensions. I had to use about 3 ft of extensions to get the case off my cfmoto. The cvt case was being the gas tank. Had to take off wheel to get the tank out of the way.

 

Just take your time. You'll get it. I have faith in your abilities. 

Link to comment
Share on other sites

You said you bought it used. 

Maybe the previous owner did some kinda bypass on the seat belt safety wire.

 

Check to see if there is any kind of wires going to the drivers side seat belt clip that tell the machine if you have uour seat belt on or not.

 

Possible if the previous owner did rig something, it might have came loose on one of your rides.

 

Just grasping at straws.

Link to comment
Share on other sites

One way bearing will slow down the machine when letting off the gas. To help hold back the machine when going down hills and such.

 

I don't know if itbis supposed to have the one way bearing or not. It can help save brake pads. Kinda of a personal preference. 

 

You could go to alpha-sports or another site to see if their parts list shows a one-way bearing. Or in a repair manual to see what it says.

 

When the engine turns. The clutch grips the clutch drum and the bearing free spins basically. When you let off gas. The one way bearing kinda grabs and doesn't let the clutch drum spin freely. Causing it to grab forcing the engine to spin. The compression of the engine causes the machine to slow down. Not technical but this is how the bearing works. Sort of. The only way I know to explain it.

 

Again a personal preference. If you don't want the machine to hold itself back when letting off gas. Don't put it in. If you want the machine to hold back a little, install.

 

Either way, will not hurt top speed. Unless you install backwards.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Similar Topics

    • By Chile
      I have a 2018 Massimo 700 MSU with the Delphi MT05 ECU.
      I have seen an alternative ECU reset procedure that involves running the engine at WOT for 5 seconds in neutral and then shutting down while throttle still at WOT.  The articles include comments that the rev limiter will prevent engine overspeed ad attendant damage. 
      1. Is this actually a recommended procedure for restting the ECU on a 700 MSU?
      2. What is the rev limited maximum RPM for the 700 MSU?
      I initiated this procedure but when the RPM exceeded 6000 I immediately terminated the process. It simply seemed excessive to me to continue.
       
      Any and all responses are greatly appreciated.
       
      Chile
    • By didgeridoo
      Hello, All!  I've decided to replace the traction batteries in my 2018 Sector E1 with a 48V Lithium set. They may be expensive, but I figure the Discovery Dry Cell are, too. I am not looking for the max driving range, as I have never received near the brochured range to begin with, but a good mix of charge/ get work done/ charge is what I am expecting.
      I have settled on the 48V EAGL kit from bigbattery dot com. Each battery pack provides 30Ah. The kit ships with a charger, as well. The packs would be physically connected in parallel (using a busbar) to one another, maintaining the 48V voltage, but together would be able to provide the amp draw the buggy pulls when going up hill or towing a rake (rated 320 max continuous Amps). This is in comparison to the serial connection the eight 6V lead batteries. Each of the EAGL batteries looks to have its own BMS; am I correct in thinking I will have to use their included charger rather than (simply) changing the onboard charger to lithium mode? The chemistry of the pack is LiFe PO4, for what it's worth.  I haven't torn anything apart yet (to diagram), so  I am not sure how the dash will interpret the AMP draw, but the kit I am looking at includes a dash mounted charge indicator.
      If anyone has completed a similar conversion, do you have any tips? Specifically, how did you remove the original batteries, and how did you secure the new ones? I am guessing that almost any change from the stock batteries would involve at least some modifications. Any tips would be appreciated, especially things I may have failed to consider. Thanks!
    • By Michael Wood
      I have a 2018 Massimo Buck 400 with 278 miles. 
      Having issues with my brakes. Took the buggy hunting and when I let my foot off the gas pedal it pulls without pressing on the brake. I looked and the pads on all 4 wheels are all toast. The E-Brake hasn’t been on since I have had it. I am guessing it may be a master cylinder issue because all 4 pads are gone. They all seem to have worn evenly that’s why I think the master cylinder. Just got the machine used from a older couple and they said it sat for some time in there pole barn. Possibly the brake lines? Calipers? I took one brake apart and when I depressed the caliper it didn’t stay. Any help is muck appreciated. 
    • By Dale Halifax
      I'm a newbie.  While I'm testing out my new to me 2021 Massimo T-Boss 410 winch, I broke the Orange Ring that fits around the cable.  I can't see much of a purpose for this ring, other than to be in the way, and to break.  Is this ring really necessary?  I did find it on the Massimo winch parts diagram, but I'm thinking,  Meah?  Am I wrong?   (It's # 13 and 14 on the parts diagram, attached)
      Thanks.

    • By Dale Halifax
      I'm still a newbie with my 2021 Massimo T-Boss 410.  I see there is a parts list on the Massimo site for the T-Boss 410, and another parts list for the T-Boss 410, before 2020.  What changed for this model in 2020?  Just curious.  I can't find anything on the web.
×
×
  • Create New...