Question about 2007 Hyosung GV250 Aquila GV250 Cruiser

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How far would i need to ride to break in my new piston & piston rings on a hyonsung Rt 125 karion? my stepdad has told me i need to ride 500 miles at 30mph is this correct or is there a simpler wa

I hadd my bike serviced and they have fitted new pistons and piston rings i just wanted to know if there was a quick way of running them in or wethere you have to do it the way my stepdad told me.. he said you have to drive 500 miles at 30mph is he correct? - Thanks :)

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Most manufacturers recommend driving 500 miles without exceeding 50 mph. Also, avoid heavy loads and hard acceleration. It is also a very good idea to change the oil after the break-in period.

Posted on Apr 14, 2014

Testimonial: "so i can ride up to 50mph i dont have to keep to 30mph will it not damage my new parts?"

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  • Andrew Walters Apr 14, 2014

    No, 50 mph is fine.

  • Andrew Walters Apr 14, 2014

    Just keep an eye on your oil level, as an engine tends to use more oil until it is broken in properly.

  • neil Apr 14, 2014

    50mph is ok as long as you do not race the engine getting there

  • Michael Day
    Michael Day Apr 15, 2014

    so i can slowly increase my engine revs and slow gear changes i was told my stepdad it was 30mph and no more but thank-you :)

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Yes 500 miles and re torque the engine if you did it yourself

Posted on Apr 14, 2014

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Posted on Jan 02, 2017

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SOURCE: my xrx 125 starts up but when riding it theeres

Tube is probably OK. It may be a drain.
Perform a compression check.

Posted on Jun 15, 2009

dcramer531
  • 1654 Answers

SOURCE: what could result from driving

Do you know what cylinder is not firing? If so take the spark plug out and that will reduce any low rpm issues, other than using more gas than it should and pushing raw gas into the exhaust where it can backfire on you, it will just run rough. I don't see an issue unless your driving it for many miles. I would not ride any more than I have to to save wear and tear on the engine. The engine is just an air pump, the ignition in the cylinders is just a way to push the pistons, so not firing on one cylinder should not harm anything physically. The rough running at low rpms is due to the engine needing that cylinder to fire and can't rely on the others to carry it as much as at higher rpm when it has momentum.

Posted on Jul 05, 2011

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1 Answer

Motorcycle is losing compression and noisy


if it is a water cooled engine the ring gap at the bottom of the cylinder should be around .010"
rings have to be installed the correct way up or the compression doesn't help push the rings against the cylinder walls for effective seal
piston skirts will touch the cylinder walls as the pressure pushes the piston to one side as it pushes the piston back down the cylinder
I have to ask did you put an old piston back in the new cylinder
was the new cylinder standard size or over size
what was the ring gap before you fitted them to the piston
did you use new rings or the old ones --maximum rin gap is .025"
rings don't wear in , just wear out
why did you replace the cylinder in the first place
was it because of low compression or taper wear
as silly as all this seams it is all very relevant to your question

Mar 11, 2016 | 2011 kawasaki KLX 250

1 Answer

Aprilia mx 125 bogs down while riding then cuts out


Dont waste your time looking for something else. Go ahead and pull the spark plug and do a compression test. It should have at least 100psi. If not,its time for a top end rebuild. It gets worse when it gets hotter because the ring gap expands,and loses what little compression it has. Best to check the compression and rebuild the top end now,before the piston or rings break,and cause lower end engine catastrophe...

Aug 29, 2012 | 2005 Aprilia MX 125

1 Answer

Bought 6 weeks ago, supposedly engine rebuilt as. 2 days ago began to clatter like a can of nuts & bolts. Best guess so far: thrown rod. Likely cost? Pro mechanic rebuilt his sis' car. Seemed up...


DID YOU KEEP EYE ON OIL LEVEL.REBUILD ENGINE WILL USE UNTIL RINGS BREAK IN. YOU NEED TO DO A OIL AND FILTER CHANGE AFTER 500 MILES. YOU NEED TO DRIVE ENGINE ACCELERATE LIGHTLY AVOID FAST QUICK ACCELERATION IF YOU DROVE ENGINE HARD DURING BREAKIN PROCECC THE CLATTERING NOISE COULD BE BROKE PISTON RINGS.CHECK ENGINE OIL LEVEL AND COOLANT SYSTEM MAKE SURE ENGINE NOT OVERHEATING OR IGNITION TIMING OFF.LET PRO MECHANIC CHECK IT OUT.

Jun 13, 2011 | 1991 Honda Accord

1 Answer

Wheres the battery on my hoysung 125 karion and how do i get to it


Here's a web page where you can download the service manual for your hyosung karion 125:

http://www.manualedereparatie.info/en/download/hyosung-karion-125-Service-manual.html

May 07, 2011 | Cycling

1 Answer

My bike wont stay running i gotta pop it it will not kick start it feels low on comperson but i just got new bore and piston and i cheack it and ever thing is all good


make sure the timing is rite-du u hav a repair manual--also u must break in the bike like its new so the rings can seat-40mph for a few hundred mile

Oct 19, 2010 | 2003 Suzuki RM 125

2 Answers

.i have 1987 kmx 125 it runs fine but im sure it


If the rattle is coming from the barrel / head area then it may well be a worn piston, worn or damaged bore / rings.
The best way to investigate is to remove the exhaust, get under the bike & shine a torch up into the barrel
Both barrel & piston can be inspected by removing the spark plug & slowly actuating the kick-starter

Ride safe
Bike-Doc
Please mark this as very helpful (if it has been!!)

Apr 27, 2010 | 2000 kawasaki KMX 125

4 Answers

Have 62,000 miles and am being told i need 60,000 mile service $500 and timing belt replaced another $500. this seems a little excessive?


Timing belt can be done cheaper than that, shop around - the 60,000 mile service is a FULL service, all fluids are changed, everything is tested - it is very important, probably the most important service a car will have - but $1000 is extortion! - shop around, ask your friends where they got the best deal on servicing.
I'd say $50 for the belt, $100 for the fluids oil etc, $300 labor charge - servicing is a striaghtforward task - empty old fluid, throw away oil filter, swap cambelt, fit new filter, refill the fluids, run diagnostics, test drive, back to customer, shouldn't cost $1000 for $150 of parts/fluids and 3 hours work...

Jan 26, 2010 | 2003 Mitsubishi Eclipse Spyder

2 Answers

SEIZED PISTON


excessive piston clearance.really needed bore job with oversized piston,not just honed and rings.measure piston to cylinder clearance,check spcifications and verify

Apr 05, 2009 | 2003 Yamaha YZ 125

1 Answer

While riding my yz 125 it just died and won,t kick up again


  • If a hole in the piston then install new piston and rings. Next, clean the carbon off the head and install a new head gasket.
  • If cylinder wall is scared the piston has seized up. Pull the cylinder off and take it to the dealer. Have them bore the cylinder and return it along with a new oversize piston and rings.
  • While at the parts counter, get a new stock spark plug and a supply of Yamalube Two Stroke Motor Oil. You need to add 4 ounces per gallon when filling up. This will be a 32/1 gas to oil ratio. NEVER ride the bike without at least the needed 32/1 mix.
Please rate the solution as a "FixYa" if able. Thanks!

Mar 23, 2009 | 2003 Yamaha YZ 125

1 Answer

Caliper/piston


Take the cap off the master cylinder. Suck out all the fluid. Then gently pry apart the piston(s). When done replace the fluid or better yet bleed/flush the entire system. Replace the cap, and go ride. ,,,

Nov 10, 2008 | 2003 HM CRE 125

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