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* What modifications were made to the bike? | * What modifications were made to the bike? | ||
** Heavily-modified bikes should probably be avoided. (See [[#ACCESSORIES]], [[#PRICE]], and [[#DEALING]] below.) | ** Heavily-modified bikes should probably be avoided. (See [[#ACCESSORIES]], [[#PRICE]], and [[#DEALING]] below.) | ||
* Off-road bikes: How often is the air filter cleaned? Replaced? | * Off-road bikes: How often is the [[air filter]] cleaned? Replaced? | ||
** Dirt bike air | ** Dirt bike [[air filter]]s should be cleaned or changed frequently, and fairly proportional to how frequently the bike sees sandy & dusty conditions. Unless you're looking at a dual-sport (street + dirt) bike, the [[air filter]] should be cleaned or replaced after every couple of rides. Ditto for the transmission oil. | ||
* Off-road two-strokes: When's the last time the bike got a fresh top end? | * Off-road two-strokes: When's the last time the bike got a fresh top end? | ||
** Believe it or not, manufacturers typically recommend that off-road two-strokes should get a new top-end after every ten hours of use. That's pretty conservative -- I change everything (pistons/rings/wrist pin/etc) every 30-40 hours of use, and just the rings somewhere in the middle. | ** Believe it or not, manufacturers typically recommend that off-road two-strokes should get a new top-end after every ten hours of use. That's pretty conservative -- I change everything (pistons/rings/wrist pin/etc) every 30-40 hours of use, and just the rings somewhere in the middle. |