Best way to start a 2 stroke?

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thestu

New Member
Mar 25, 2010
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Australia
Hey guys

I have to bike now a mountain bike and a malvern star dragster both with 70cc motors.

I normally just ride the bike to get some speed then drop the clutch... I used to pedal about 20metres before it would start and now i need to pedal about 100 metres...what am i doing wrong??? or what do i need to change?

Stu
 
Bikeguy Joe

Bikeguy Joe

Godfather of Motorized Bicycles
Jan 8, 2008
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You may also want to check your spark plug if it was starting fine before.

...and yes, a little prime is a good thing.
 
C

city of angels

New Member
May 24, 2009
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tucson az
well first turn your valve on the push the primer button until gas str coming out of the carbutator you should be able to smell it once gas start coming out
 
Bikeguy Joe

Bikeguy Joe

Godfather of Motorized Bicycles
Jan 8, 2008
11,837
252
63
up north now
Sorta....I push it for about two seconds the first time, dead cold. I use about 1/2-3/4 choke. It pushes down on the float, it's not a primer bulb like on a weedwacker engine.
 
Venice Motor Bikes

Venice Motor Bikes

Custom Builder / Dealer/Los Angeles
Mar 20, 2008
7,271
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Los Angeles, CA.
Another thing that will help with starting... New spark plug (NGK B5HS), new wire & boot... & remove the plug-ins to the CDI, & solder & heat shrink the wires! ;)
 
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