Engine

An engine comprising:

• a kick shaft placed on an opposite side of a transmission case and parallel to a crankshaft, and positioned, as seen in a crankshaft direction, below a transmission shaft and an output shaft in order to overlap with at least one of a driven pulley or a clutch mechanism,
• wherein the transmission shaft and the output shaft are coaxially disposed, and the kick shaft is located approximately directly below the output shaft and overlaps with both the driven pulley and the clutch mechanism.

An engine comprising:

• a lubricant oil chamber for collecting lubricating oil, wherein a center of the lubricant oil chamber in a crankshaft direction is disposed to be shifted to a side of a transmission case from an engine center line passing through a cylinder axis line;
• wherein at least one of a series of kick gears for transmitting a rotation of a kick shaft to a crankshaft, a series of pump gears for transmitting a rotation of the crankshaft to a lubricant oil pump, a series of starting gears for transmitting a rotation of a starter to the crankshaft, and a series of balancer gears for transmitting a rotation of the crankshaft to a balancer shaft is disposed to be shifted to an opposite side of the transmission case from the lubricant oil chamber of an engine case, and
• wherein a side wall of the lubricant oil chamber on the opposite side of the transmission case is constituted of a support wall portion for supporting a journal portion on the opposite side of the transmission case of the crankshaft and at least one of the series of kick gears, the series of pump gears, the series of starting gears, and the series of balancer gears is disposed along the support wall portion.

An engine comprising:

• a lubricant oil chamber for collecting lubricating oil, wherein a center of the lubricant oil chamber in a crankshaft direction is disposed to be shifted to a side of a transmission case from an engine center line passing through a cylinder axis line;
• wherein at least one of a series of kick gears for transmitting a rotation of a kick shaft to a crankshaft, a series of pump gears for transmitting a rotation of the crankshaft to a lubricant oil pump, a series of starting gears for transmitting a rotation of a starter to the crankshaft, and a series of balancer gears for transmitting a rotation of the crankshaft to a balancer shaft is disposed to be shifted to an opposite side of the transmission case from the lubricant oil chamber of an engine case, and
• wherein a filter chamber is disposed in a depressed manner on a side surface of the engine case opposite to the transmission case so as to overlap at least in part with a generator attached to an end of the crankshaft opposite to the transmission case, and an oil filter for filtering the lubricant oil is provided in a filter chamber.

An engine comprising:

• a lubricant oil chamber for collecting lubricating oil, wherein a center of the lubricant oil chamber in a crankshaft direction is disposed to be shifted to a side of a transmission case from an engine center line passing through a cylinder axis line;
• wherein at least one of a series of kick gears for transmitting a rotation of a kick shaft to a crankshaft, a series of pump gears for transmitting a rotation of the crankshaft to a lubricant oil pump, a series of starting gears for transmitting a rotation of a starter to the crankshaft, and a series of balancer gears for transmitting a rotation of the crankshaft to a balancer shaft is disposed to be shifted to an opposite side of the transmission case from the lubricant oil chamber of an engine case, and
• wherein the series of kick gears is constituted that a kick gear attached to the kick shaft is capable of engaging with a first intermediate gear attached to one end of an intermediate shaft, a second intermediate gear attached on an opposite end of the intermediate shaft is capable of engaging with a crank gear attached to the crankshaft, the kick gear and the first intermediate gear are disposed on the an inner side of a support wall portion, and the second intermediate gear and the crank gear are disposed on an outer side of the support wall portion.