Question about Sym Elephant CR250 Motorcycles

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Revs too high and not much speed whats my problem please

Bike been stood 4 years went through mot ok but more noise than speed

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  • 3 Answers

The problem might be with ur friction less clucth plates...
Pull out those and take a new set in...
Do hav a check at ur timing chain too...

Posted on Dec 10, 2012

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Posted on Jan 02, 2017

tellme2
  • 137 Answers

SOURCE: loss of power around 8 -10,000 revs in 3/4 gear

ello m8,,hows things,,clean out the air filter 1st, change all your plugs mr,try that , if nothing u will need to get the carbs balanced to by a bike shop,mechanic,,unless u have carb gauges,,, itl be easier if they do it,, try these 1st m8,, if no joy come back and il go threw step 2 with yuh,,

Posted on Feb 28, 2009

  • 1 Answer

SOURCE: yamaha 2001 r1

Hi There,
Got this from my copy of the Yamaha workshop manual for this model

The YZF-R1 features a self-diagnosing system for the following circuits:
1. throttle position sensor
2. EXUP
3. fuel level indicator light
if any of these circuits are defective their respective condition codes will be displayed on the tachometer when the main switch is set to "ON" (irrespective of whether the engine is running or not)

1. throttle position sensor a) Disconnected b) Short-circuit c) Locked 0 - 3,000rpm
2. EXUP a) Improper connection b) Short-circuit c) Servomotor is locked 0 - 7,000rpm
3. Fuel level indicator light a) Improper connection 0 - 8,000rpm

It looks like you have a problem with the EXUP Valve on yours, probably seized or maybe cables not moving freely
Hope this Helps

Posted on Apr 30, 2009

wayneman01
  • 301 Answers

SOURCE: High pitched whining noise which doesn't vary

My bet is that it is actually coming from the speedometer. Try disconnecting either end of the speedo cable and see if the noise stops. If so, then all you need to do is apply a drop or two (but no more!) of oil into the speedometer-head bushing. Do this by removing the instrument cluster so you can flip it over - then put some light viscosity oil into the area where the speedo cable goes in. CAUTION; do not use more than one or two drops of oil - and do not leave the instruments upside down for any length of time. Failure to heed these warnings can cause oil to drip onto the face of the unit, making an unsightly (and un-fixable) mess.

Please let me know if this fixes the noise.

Posted on Oct 25, 2009

Testimonial: "Thanks very much. Problem solved - It used to whine like a banshee now it's sweet. Three cheers to you. You are the man ! Davydd"

wayneman01
  • 301 Answers

SOURCE: I have a CRF100 and it has excessive vibration

Make sure all of the engine mounting bolts are tightened properly. One loose engine mount bolt can cause exactly what you are describing. While you're doing that, perform a visual inspection of the attachment points on the frame, making sure there are no visible cracks.
Aside from that, just stick a wrench on every bolt and nut on the bike that you can see - and make sure everything is tight.
The only other possible thing I can think of would be a loose flywheel on the crankshaft. Unlikely, but check just to be sure.

Posted on Dec 01, 2009

  • 3567 Answers

SOURCE: 1999 RSV Mille 20K miles, clutch seems to slip at high revs

The bike has led a hard life. This takes a toll on the clutch friction plates. Just install a new set of fiber friction plates and all should be well. When installing the plates also check the springs. You may want to install new springs as well.

Posted on Dec 01, 2009

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Loss of power around 8 -10,000 revs in 3/4 gear


ello m8,,hows things,,clean out the air filter 1st, change all your plugs mr,try that , if nothing u will need to get the carbs balanced to by a bike shop,mechanic,,unless u have carb gauges,,, itl be easier if they do it,, try these 1st m8,, if no joy come back and il go threw step 2 with yuh,,

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