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125cc Piranha Engine
22mm Mikuni Carb
Coil
wiring harness
CDI
kick starter
shifter
intake manifold + gaskets
4 up Gear Pattern engine
Engine:
Displacement 124ccEngine Type Air Cooled, Single-Cylinder, 2-valve, 4-strokeBore/Stroke 52.4mm x 57mmFinal Drive ChainFuel Delivery 22mmFuel Unleaded / 93 OctaneRecommended Engine Oil 10W-40 Petroleum Based (Non-synthetic)
Ignition:
Kick Start YesElectric Start NoCDI YesAuxiliary Output Yes
Transmission:
Transmission 4-Speed Manual 4-UpShift-Pattern Four-speed Transmission: N-1-2-3-4Clutch Rear 5-Plate Manual
Starting Tips
Starting pit bike engines will take some practice. All pit bike engines have relatively high compression ratios and require a "quality over quantity " approach in order to ensure quick start-ups and avoid mechanical mishaps. It is important to follow this routine the first few times when first attempting to start your bike.
Slowly kick the engine over until the kick start reaches a compression stroke (the point in which the kick start lever is hardest to push down.)
Slowly continue to press the kick starter until the engine rotates slightly through the firmest point in the compression stroke.
Allow the kick start lever to return back its top rest position
With a quick and balanced motion - Move down forcefully on the kick lever. These motors need a strong, quick kick to get started.
If you fail to follow this procedure, especially with longer stroke engines or 125cc + bores you can cause serious damage to your crankcase, clutch and transmissions assemblies!
Tips to Avoid kickback
Hold onto the crossbar pad with your throttle hand while kicking the bike over to avoid twisting the throttle open by accident
Before start up - turn the idle screw on the carburetor in a turn or 2 (turn the screw back out to normal idle setting once running.)
Use a digital CDI with variable ignition timing at start-up, this will help reduce kickback and allow the bike to start much easier compared to the stock CDI unit.
If ignition timing is adjustable it should be adjusted to the minimum
Furious, repeated kicking will not get the engine started - firm, full stroke kicks are the only way to get them to start first kick, every time "Quality over Quantity"
The throttle must be completely closed when you kick the engine over or it will kick back EVERY TIME.
A small blip of the throttle may be used when the engine is hot if required but NO more than 10 ° opening of the throttle in any case
Warranty
Crate Engines are sold AS IS with no warranty whatsoever.
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