I have a new to me Garelli Gransport that is the 1hp model, it's very very very slow, like 7 to 10 mph how can I make it a little faster? Just to do the stock 20mph it's supposed to do. I'm running all stock
Make sure the exhaust isn't stopped up and possibly a new set of rings.
Are you going by the speedometer or GPS?
Clean and lube points cam and felt pad. Clean and adjust points. Set ignition timing.
take a peek if your throttle slide is opening all the way.
GPS, the speedo isnt hooked up
The speedo drive unit and front/rear wheel bearings have dried and dirty grease. The wheel bearings need a complete cleaning and new waterproof grease. Since you are not using your speedo the drive can be removed and spaced out with washers. Low air pressure in tires will slow you down. Clean your exhaust header and outlet difuser.
Do everything everyone has said so far, Sounds like plugged exhaust.
7 - 10 mph??
prolly a dang birds nest in your muffler
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