in my experience it was because
1/ the spark plugs were dirty ( i clean the plugs on almost every ride)
2/ the plug gap was incorrect - this stopped the problem - the preset gap was too wide.
3/ Exhaust leak if on deceleration
4/ Timing incorrect (if thru carb)
5/ incorrect valve adjustment
6/ intake valve not seated
4500 miles then engine needs overhaul
for brand new, a 883 sportster (883 cc)
The Harley Davidson Sportster does not have a fuse box. It has a circuit breakers that are located behind the engine near the rear tire.
The drain plug is under the engine, near the kick stand.
If it's a Sportster, the capacity is 3us quarts or 2.8L.
I believe it was in 1997; at least, that's when a rubber-mounted engine first appeared on the Sportster lineup.
A 2003 sportster has a chain drive for the promary, firm the engine to the transmission, and a belt drive final drive. The final drive is from the transmission to the rear wheel.
buy a 2004 sportster..it has a rubber mounted engine that isolates vibration
The engine oil supply holds three quarts. The primary/transmission holds one quart of Sport-Trans.
The engine uses three quarts of oil, and the Primary/Transmission uses one quart of Sport-Trans.
In all cases, from Big Twin, V-Rod, and Sportster, yes.
This will depend upon whether this is a Sportster engine (which has two separate oil supplies) or a Big Twin (which has three).