| 摘要 |
PROBLEM TO BE SOLVED: To improve the holdability by an arm to car body parts such as a fuel tank. SOLUTION: First recessed parts 4 are formed on upper both side parts of the fuel tank 10 mounted between a bar handle 4 and a riding seat 11, and driver's both arms, in particular, elbows are fitted in the first recessed parts. Further second recessed parts 41 are formed at lower parts of the first recessed parts 1 of the fuel tank 10, and driver's knees are abutted on the second recessed parts. Further outward projecting parts 42 are formed between the first recessed part and the second recessed part.
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