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Discussion Starter #1
Hi guys,
not sure why i haven't joined until now, but anyway here I go. I have a 2007 650 prowler, i should say it was a 650. The motor died in it and instead of rebuilding, my dad bought a kawi mule pro-fx. I "inherited" his prowler and dragged it to my house in order to resurrect it. Bought a lot of parts from speedwerx, including the 700 BB kit, new cam, and titanium valve springs. Also got new timing chain guides, timing chain, and tensioner, and speedwerx recommended jetting. Put put back together, and man does it rip, when it wants to start. Very hard starting when it has been sitting. checked, and rechecked valve clearances, replaced the electric choke, and still found that usually i could only get it to start when cold by using my hand to cover the intake. I also found that a rear halfshaft and wheel hub decided they should be smooth, and thusly flattened out the splines. Oh well, winter was fast approaching and i needed to get my sled ready. Parked it for the winter. After this craptastic winter, i am already itching to finish off the prowler, so I will be ordering a manual choke kit i found on ebay, and getting a new halfshaft and wheel hub coming my way.

Sorry for the long winded opener, but Hi and great site!

fathead.
 

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howdy back at ya ... fill in your signature lines and also location , helps us answer questions without additional questions

also read my signature for further newby instruction :)

bunch of good wrenches on here and will pitch in and help usually in one day , and a big plus is we're all full of BS so join in and have some fun
 

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Welcome to the forum! Here is a quick fix that worked for me, same condition you have. There is a hose coming off the carb bowl, that runs back, between the seats and hangs down around the snorkels. Plug that hose. It lets fuel evaporate from the carb bowl. Might not fix yours, but has fixed several other 650 owners hard start problem. Interested in your motor mods, keep us up to date on how she runs!
 

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Always great to add new member! Best site/Best People/Most fun! Sounds like an interesting project!
 

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Discussion Starter #5
Thanks Guys,

I will definitely plug the drain hose. Anybody switch to a manual choke ? or am i barking up the wrong tree there ?
 

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Seems to be the mod to make! I really can't offer much on that as I have FI. Also went with a big bore on mine!
 

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Thanks Guys,

I will definitely plug the drain hose. Anybody switch to a manual choke ? or am i barking up the wrong tree there ?
I was going to, until I found that hose! My symptom was a long hard start after it sat unused for 5 days and longer. I thought choke as well, but since it wasn't temp related, I figured it had to be something else, then MLH1962 (Mike) turned me on to try this! It worked. It can sit for 10+days and start like a champ, as long as it's on a battery maintainer. That's another biggie, the battery drains about 30 milliamps an hour for the dash/clock memory. So it needs a maintainer on it to keep it fresh all the time.
 

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Here is something I just thought of... dumb me! You have to "set" the electric choke, by pressing the gas pedal to the floor, one time, with the key on. Let up on the gas, then start! My 2009 has a sticker on the dash. I don't think 06-08 had this sticker, but they are the same and many 06-08 owners don't know this... Duh, I should have thought about this before... sorry.
 

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I keep forgetting the 650 trick, Us old guys forget things! LOL
 

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Discussion Starter #10
Thanks guys, never knew about setting the electric choke. Gonna have to pull the cat out of the shed and try that soon.

Sent from my SM-G955U using Tapatalk
 

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Little things that make a big difference!
 

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Discussion Starter #13
Well, sorry for the long delay, but after much ado, I am an idiot. In my haste to put the motor back together the first time, I forgot the dowel that goes between the cam and the sprocket. Long story short I got lucky and only ruined the cam and the sprocket. More new parts and it is running like a champ. A little mid throttle bog\miss, but I think I need to adjust my air mix screw to clean that up. I did install the manual choke, and plugging that hose seems to help it start really easy. 80 trouble free miles last weekend in the farm.

Related, if anyone has red fenders they want to sell, I am in the market.

Thanks again for all the advice

Sent from my SM-G955U using Tapatalk
 

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Little dowel pin is a killer! Another issue to check is the timing gear bolt plate retainer to ensure it covers the dowel pin. Prowlers just seem to get better with age! Kinda like me, and GT! LOL
 

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Me too, Mike! But I did find that it runs smoother with it unplugged. So I keep it plugged when it sits a lot and I occasionally use it. Then pull my golf tee out when I'm gonna use the piss out of it. (trails-gravie running, it makes a difference.
 

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Me too, Mike! But I did find that it runs smoother with it unplugged. So I keep it plugged when it sits a lot and I occasionally use it. Then pull my golf tee out when I'm gonna use the piss out of it. (trails-gravie running, it makes a difference.
I've had mine on occasion just die when running wide open across fields like it ran out of fuel, takes a few cranks to get it running again. It doesn't happen very often but I'll try doing the same thing and see if I notice a difference.
 
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