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Troubleshooting > Failures par brand > MASH > My motorcycle MASH 50 grazes

My boxed motorcycle Mash grazes

Your mà © caboîte 50cc Mash grazes when you ride? This can be due to several issues. It is possible that your machine will graze when you are driving at 60km / hpar example, or when you are just starting out. In 90% of cases it is a problem gasoline. Indeed, if there is too much gasoline in your engine, it will be difficult for you to obtain optimal performance.

my 50cc mash grazes low

Your 50 motorcycle Mash grazes at low speed

If your motorcycle Mash grazes at low speed, the problem is probably due to carburettor. In fact, most of the time it is a main jet too small. It depends on the changes you have made to your Mash but you are surely too poor in gasoline.

Example: You have a motorcycle 50cc Mash with an original engine. You decide to install a new exhaust and a 19 carburetor. Your machine will graze at low speed if you leave the nozzle on 75 (original). It will rather be necessary to pass on a jet of 85, see 90 or 95.

It is also strongly recommended to check the good condition of your spark plug . If the problem persists, perform a carburetor adjustment. Finally, it can also be a cylinder head gasket damaged. In this case, it will have to be replaced (or have it replaced par a two-wheeler professional).

Your 50 motorcycle Mash grazes at high speed

If your motorcycle Mash grazes at high speed, the problem is also due to carburettor. Indeed, most of the time it is a matter of gasoline. It depends on the changes you have made to your Mash but you are surely too rich in gasoline.

Example: You have a motorcycle 50cc Mash with an original engine and a 110 jet on your carburetor. At high revs, your machine has no more power and gives jerk when accelerating.

Start par check the condition of your spark plug, if it is black, this effectively means that you are too rich in petrol, you should try smaller nozzles. Going down from 5 to 5. Check the spark at the spark plug, the muffler (it may be clogged) and the condition of your air filter.

Also check the condition of your base gasket. Indeed if the latter is damaged, air arrives and this can make your Mash.

Finally, be sure to put quality gasoline, this can be one of the causes of a Mash that grazes.

ma mash grazes at high speed
ma Mash grazes at mid-speed

Your 50 motorcycle Mash grazes at half speed

If your motorcycle Mash grazes at mid-speed, the problem is probably due to carburettor. It is imperative to carry out a carburetor adjustment.

Start par adjust the richness screw while increasing the jet from 2 points to 2 points. You will quickly find the right compromise for your carburetor.

Finally, you can carry out an adjustment of carburetor needle (take it up a notch par example).

An electronic problem can also be the cause of a motorcycle that grazes at mid revs. Check the condition of the CDI unit, the electronic clamping and the ignition if necessary.


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